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Nutrition & Dietetics Solved Questions Bank & Study Material (2026) - Apex Rankers
Medical & Health Sciences | Topic-Wise Comprehensive Solved Pool
260 Total Solved Questions
~390 mins Estimated Reading Time
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Q. 1
Dietetics
Difficulty: Easy
(1 Mark)
In community nutritional screening of children aged 6 to 59 months, a Mid-Upper Arm Circumference (MUAC) measurement of less than 115 mm (11.5 cm) indicates:
A
Normal nutritional status
B
Moderate Acute Malnutrition (MAM)
C
Severe Acute Malnutrition (SAM)
✓ Correct
D
Overweight / Obesity
💡
Step-by-Step Explanation & Concept Rationale
WHO criteria for children aged 6-59 months: MUAC < 115 mm (red zone) = Severe Acute Malnutrition (SAM); 115-124 mm (yellow zone) = Moderate Acute Malnutrition (MAM); >= 125 mm (green) = Normal.
Q. 2
Dietetics
Difficulty: Easy
(1 Mark)
Severe protein malnutrition characterized by bilateral pitting edema, moon face, hepatomegaly with fatty liver, and 'flaky-paint' dermatosis is known as:
A
Marasmus
B
Kwashiorkor
✓ Correct
C
Cachexia
D
Scurvy
💡
Step-by-Step Explanation & Concept Rationale
Kwashiorkor is severe protein deficiency in the presence of adequate or marginal calorie intake, characterized by hypoalbuminemic edema, enlarged fatty liver, and dermatosis, whereas Marasmus is total calorie starvation with severe emaciation.
Q. 3
Dietetics
Difficulty: Medium
(1 Mark)
According to Asian-specific World Health Organization BMI cut-offs, an adult with a Body Mass Index (BMI) of 23.0 to 27.4 kg/m2 is classified as:
A
Underweight
B
Normal weight
C
Overweight
✓ Correct
D
Obese Class II
💡
Step-by-Step Explanation & Concept Rationale
For Asian populations with higher visceral adiposity at lower BMIs, the WHO expert consultation established lower cutoffs: Normal = 18.5 - 22.9, Overweight = 23.0 - 27.4, and Obese >= 27.5 kg/m2.
Q. 4
Dietetics
Difficulty: Easy
(1 Mark)
In food microbiology and culinary safety, what is the temperature 'Danger Zone' where bacteria multiply most rapidly?
A
0°C to 4°C
B
5°C to 60°C (41°F to 140°F)
✓ Correct
C
75°C to 100°C
D
100°C to 120°C
💡
Step-by-Step Explanation & Concept Rationale
The food temperature danger zone is 5°C to 60°C (41°F to 140°F), in which foodborne pathogens such as Salmonella, S. aureus, and E. coli double every 20 minutes.
Q. 5
Dietetics
Difficulty: Easy
(1 Mark)
What does the abbreviation HACCP stand for in industrial and institutional food safety management?
A
Hazard Analysis and Critical Control Points
✓ Correct
B
Health Assessment for Clinical Care Planning
C
Humanitarian Aid for Child Care Programs
D
Hospital Administration and Catering Control Protocol
💡
Step-by-Step Explanation & Concept Rationale
HACCP (Hazard Analysis and Critical Control Points) is a systematic preventive approach to food safety from biological, chemical, and physical hazards in production processes.
Q. 6
Dietetics
Difficulty: Medium
(1 Mark)
High-Temperature Short-Time (HTST) pasteurization of fluid milk typically requires heating to what temperature and time duration?
A
63°C for 30 minutes
B
72°C (161°F) for at least 15 seconds
✓ Correct
C
100°C for 10 minutes
D
135°C for 2 seconds
💡
Step-by-Step Explanation & Concept Rationale
HTST pasteurization (flash pasteurization) heats milk to 71.7°C - 72°C for 15-20 seconds to destroy pathogenic bacteria like Coxiella burnetii and Mycobacterium tuberculosis while preserving flavor.
Q. 7
Dietetics
Difficulty: Medium
(1 Mark)
Which anthropometric indicator is used in community health surveys to quantify chronic long-term malnutrition (stunting)?
A
Weight-for-height (W/H)
B
Height-for-age (H/A) < -2 Z-scores
✓ Correct
C
Weight-for-age (W/A)
D
Head circumference
💡
Step-by-Step Explanation & Concept Rationale
Height-for-age < -2 standard deviations (Z-scores) defines stunting, reflecting chronic, long-term cumulative nutritional deprivation and repeated infections.
Q. 8
Dietetics
Difficulty: Easy
(1 Mark)
Which foodborne intoxication is caused by an extremely potent neurotoxin produced by an anaerobic, spore-forming bacterium in improperly home-canned low-acid foods?
A
Botulism (Clostridium botulinum)
✓ Correct
B
Salmonellosis
C
Staphylococcal food poisoning
D
Campylobacter jejuni enteritis
💡
Step-by-Step Explanation & Concept Rationale
Clostridium botulinum spores germinate in anaerobic, low-acid environments (canned vegetables, cured meats) producing botulinum neurotoxin, which blocks presynaptic acetylcholine release causing descending paralysis.
Q. 9
Dietetics
Difficulty: Easy
(1 Mark)
What is the recommended universal public health intervention to eliminate Iodine Deficiency Disorders (IDD) globally?
A
Universal Salt Iodization (USI)
✓ Correct
B
Adding iodine to drinking water reservoirs
C
Weekly iodine injections
D
Distributing seaweed tablets to schools
💡
Step-by-Step Explanation & Concept Rationale
Universal Salt Iodization (USI)—fortifying table salt with potassium iodate at 30-50 ppm—is the most cost-effective, sustainable strategy endorsed by WHO/UNICEF to prevent goiter and intellectual impairment.
Q. 10
Dietetics
Difficulty: Easy
(1 Mark)
In the National Nutrition Survey (NNS) of Pakistan, which maternal micronutrient deficiency remains the most widespread public health challenge?
A
Iron Deficiency Anemia
✓ Correct
B
Vitamin C deficiency
C
Fluoride deficiency
D
Sodium deficiency
💡
Step-by-Step Explanation & Concept Rationale
According to the National Nutrition Survey of Pakistan, over 40% of women of reproductive age suffer from anemia, predominantly driven by nutritional iron deficiency and poor dietary bioavailability.
Q. 11
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
Which mineral is an essential constituent of the thyroid hormones triiodothyronine (T3) and thyroxine (T4)?
A
Magnesium
B
Iron
C
Zinc
D
Iodine
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Iodine is essential for thyroid hormone biosynthesis; its deficiency results in endemic goiter and cretinism.
Q. 12
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #8: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 13
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #12: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 14
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #16: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 15
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #20: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 16
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #24: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 17
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #28: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 18
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #32: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 19
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #36: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 20
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #40: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 21
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #44: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 22
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #48: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Dextrin
B
Starch
C
Cellulose
D
Glycogen
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 23
Nutrition & Dietetics
Difficulty: MEDIUM
(1 Mark)
In chronic kidney disease (CKD) prior to dialysis, which macronutrient is typically restricted to minimize nitrogenous waste accumulation?
A
Complex carbohydrates
B
Dietary fiber
C
Unsaturated fats
D
Protein
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Restricting protein intake (0.6-0.8 g/kg/day) reduces uremic toxins and slows the progression of renal failure in pre-dialysis CKD.
Q. 24
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In medical nutrition therapy #6: Which vitamin supplementation is mandatory for patients following a strict 100% vegan dietary pattern?
A
Folate
B
Vitamin C
C
Vitamin A
D
Vitamin B12 (Cobalamin)
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Vitamin B12 is exclusively synthesized by microorganisms and found naturally in animal sources, necessitating supplementation for vegans.
Q. 25
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In medical nutrition therapy #10: Which vitamin supplementation is mandatory for patients following a strict 100% vegan dietary pattern?
A
Folate
B
Vitamin C
C
Vitamin A
D
Vitamin B12 (Cobalamin)
✓ Correct
💡
Step-by-Step Explanation & Concept Rationale
Vitamin B12 is exclusively synthesized by microorganisms and found naturally in animal sources, necessitating supplementation for vegans.
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Q. 1
Dietetics
Difficulty: Easy
(1 Mark)
What are the physiological energy yield values (Atwater factors) per gram of Carbohydrate, Protein, and Lipid, respectively?
A
4 kcal, 4 kcal, 9 kcal
✓ Correct
B
4 kcal, 9 kcal, 4 kcal
C
9 kcal, 4 kcal, 4 kcal
D
7 kcal, 4 kcal, 9 kcal
💡
Step-by-Step Explanation & Concept Rationale
Standard physiological fuel values (Atwater factors) are 4 kcal/g for carbohydrates, 4 kcal/g for proteins, and 9 kcal/g for lipids (alcohol yields 7 kcal/g).
Q. 2
Dietetics
Difficulty: Easy
(1 Mark)
Which of the following is an essential amino acid that must be supplied through dietary intake because the human body cannot synthesize it?
A
Alanine
B
Glutamic acid
C
Lysine
✓ Correct
D
Serine
💡
Step-by-Step Explanation & Concept Rationale
The 9 essential amino acids are: Phenylalanine, Valine, Threonine, Tryptophan, Isoleucine, Methionine, Histidine, Leucine, and Lysine (mnemonic: PVT TIM HaLL).
Q. 3
Dietetics
Difficulty: Easy
(1 Mark)
Bitot's spots (foamy plaques on the bulbar conjunctiva) and xerophthalmia are classic clinical signs of deficiency of:
A
Vitamin A (Retinol)
✓ Correct
B
Vitamin C (Ascorbic acid)
C
Vitamin D (Calciferol)
D
Vitamin E (Tocopherol)
💡
Step-by-Step Explanation & Concept Rationale
Vitamin A deficiency impairs rhodopsin synthesis causing night blindness (nyctalopia), conjunctival xerosis, Bitot's spots, corneal ulceration, and keratomalacia.
Q. 4
Dietetics
Difficulty: Easy
(1 Mark)
The clinical manifestation of 'Pellagra', characterized by the '4 Ds' (Diarrhea, Dermatitis, Dementia, Death), is caused by severe deficiency of:
A
Thiamine (Vitamin B1)
B
Riboflavin (Vitamin B2)
C
Niacin (Vitamin B3)
✓ Correct
D
Pyridoxine (Vitamin B6)
💡
Step-by-Step Explanation & Concept Rationale
Niacin (Vitamin B3) or its precursor tryptophan deficiency produces Pellagra, characterized by bilateral symmetrical photosensitive dermatitis (Casal's necklace), diarrhea, dementia, and death.
Q. 5
Dietetics
Difficulty: Easy
(1 Mark)
Wernicke-Korsakoff syndrome, characterized by ataxia, ophthalmoplegia, and confabulation, is caused by acute deficiency of:
A
Thiamine (Vitamin B1)
✓ Correct
B
Cobalamin (Vitamin B12)
C
Folic acid (Vitamin B9)
D
Biotin (Vitamin B7)
💡
Step-by-Step Explanation & Concept Rationale
Thiamine pyrophosphate (TPP) deficiency, frequently encountered in chronic alcoholism or severe malnutrition/hyperemesis, leads to Wernicke's encephalopathy and wet/dry Beriberi.
Q. 6
Dietetics
Difficulty: Easy
(1 Mark)
Which vitamin functions as a coenzyme in the gamma-carboxylation of glutamic acid residues in blood clotting factors II, VII, IX, and X?
A
Vitamin K
✓ Correct
B
Vitamin E
C
Vitamin D
D
Vitamin A
💡
Step-by-Step Explanation & Concept Rationale
Vitamin K (phylloquinone/menaquinone) is the required cofactor for gamma-glutamyl carboxylase, which converts glutamate to gamma-carboxyglutamate (Gla) on clotting factors II, VII, IX, X, and protein C/S.
Q. 7
Dietetics
Difficulty: Medium
(1 Mark)
Subacute combined degeneration of the spinal cord (loss of vibration and position sense) alongside megaloblastic anemia is diagnostic of deficiency of:
A
Folic acid
B
Vitamin B12 (Cobalamin)
✓ Correct
C
Iron
D
Ascorbic acid
💡
Step-by-Step Explanation & Concept Rationale
While both Folate and B12 deficiency produce megaloblastic anemia, ONLY Vitamin B12 deficiency leads to progressive neurological demyelination (subacute combined degeneration) due to defective myelin methylation.
Q. 8
Dietetics
Difficulty: Easy
(1 Mark)
Non-heme iron absorption from plant foods is significantly enhanced in the intestinal lumen by the simultaneous consumption of:
A
Phytates and oxalates
B
Tannins in tea
C
Ascorbic acid (Vitamin C)
✓ Correct
D
Calcium supplements
💡
Step-by-Step Explanation & Concept Rationale
Ascorbic acid reduces ferric iron (Fe3+) to the more soluble ferrous iron (Fe2+) and forms a chelate in the duodenum, substantially enhancing non-heme iron absorption.
Q. 9
Dietetics
Difficulty: Medium
(1 Mark)
Severe deficiency of which trace element causes dwarfism, hypogonadism, impaired wound healing, and acrodermatitis enteropathica?
A
Copper
B
Zinc
✓ Correct
C
Selenium
D
Chromium
💡
Step-by-Step Explanation & Concept Rationale
Zinc is a cofactor for > 300 metalloenzymes (DNA/RNA polymerases, alkaline phosphatase). Deficiency impairs cell proliferation, immunity, gustatory acuity (hypogeusia), and wound healing.
Q. 10
Dietetics
Difficulty: Medium
(1 Mark)
Dietary fiber that dissolves in water to form a gel-like matrix (e.g., pectin, beta-glucan in oats) is clinically effective in:
A
Lowering serum LDL cholesterol and blunting postprandial blood glucose spikes
✓ Correct
B
Accelerating gastric emptying of solid food
C
Decreasing calcium excretion
D
Inhibiting stomach hydrochloric acid secretion
💡
Step-by-Step Explanation & Concept Rationale
Soluble dietary fiber binds bile acids in the gut to promote their fecal excretion (lowering LDL cholesterol) and slows carbohydrate absorption, smoothing postprandial glucose curves.
Q. 11
Dietetics
Difficulty: Easy
(1 Mark)
The active hormonal form of Vitamin D synthesized in the kidneys is:
A
Cholecalciferol (Vitamin D3)
B
25-hydroxycholecalciferol (Calcidiol)
C
1,25-dihydroxycholecalciferol (Calcitriol)
✓ Correct
D
7-dehydrocholesterol
💡
Step-by-Step Explanation & Concept Rationale
In the kidney, 1-alpha-hydroxylase converts 25(OH)D into 1,25(OH)2D (calcitriol), the biologically active hormone that stimulates intestinal calcium and phosphate absorption.
Q. 12
Dietetics
Difficulty: Medium
(1 Mark)
Which essential fatty acid belongs to the omega-3 family and is a metabolic precursor for EPA and DHA?
A
Linoleic acid (LA)
B
Alpha-linolenic acid (ALA)
✓ Correct
C
Oleic acid
D
Arachidonic acid (AA)
💡
Step-by-Step Explanation & Concept Rationale
Alpha-linolenic acid (ALA, 18:3 n-3) is the plant-derived essential omega-3 fatty acid, while Linoleic acid (LA, 18:2 n-6) is the parent omega-6 fatty acid.
Q. 13
Dietetics
Difficulty: Easy
(1 Mark)
Deficiency of dietary iodine during gestation and early infancy causes irreversible mental retardation and stunted growth, known as:
A
Cretinism
✓ Correct
B
Kwashiorkor
C
Rickets
D
Scurvy
💡
Step-by-Step Explanation & Concept Rationale
Iodine is indispensable for thyroid hormone (T3/T4) synthesis. Severe gestational and neonatal iodine deficiency causes endemic cretinism (neurological and myxedematous forms).
Q. 14
Dietetics
Difficulty: Medium
(1 Mark)
What is the primary biological function of Vitamin E (alpha-tocopherol) in human cells?
A
Coenzyme in amino acid transamination
B
Peroxisomal fat synthesis
C
Lipid-soluble chain-breaking antioxidant protecting cell membranes from lipid peroxidation
✓ Correct
D
Stimulation of bone mineralization
💡
Step-by-Step Explanation & Concept Rationale
Vitamin E is the major lipid-soluble antioxidant in plasma membranes and lipoproteins, scavenging peroxyl free radicals and halting the propagation of polyunsaturated fatty acid peroxidation.
Q. 15
Dietetics
Difficulty: Hard
(1 Mark)
Which nutrient provides the primary metabolic fuel for enterocytes (intestinal epithelial cells) and immune cells?
A
Glucose
B
Glutamine
✓ Correct
C
Leucine
D
Palmitate
💡
Step-by-Step Explanation & Concept Rationale
Glutamine is the principal respiratory fuel for rapidly dividing intestinal mucosal enterocytes and lymphocytes, maintaining gut mucosal barrier integrity during stress and illness.
Q. 16
Dietetics
Difficulty: Easy
(1 Mark)
The glycemic index (GI) of a carbohydrate food represents:
A
The total grams of carbohydrate per serving
B
The rate and extent to which a food raises blood glucose compared to a reference standard (glucose or white bread)
✓ Correct
C
The caloric density per 100 grams of food
D
The percentage of dietary fiber in the food
💡
Step-by-Step Explanation & Concept Rationale
Glycemic Index ranks foods based on the 2-hour postprandial incremental area under the blood glucose response curve (AUC) relative to 50g of pure glucose (GI = 100).
Q. 17
Dietetics
Difficulty: Easy
(1 Mark)
Cheilosis (angular stomatitis), glossitis (magenta tongue), and corneal vascularization are classic signs of deficiency of:
A
Riboflavin (Vitamin B2)
✓ Correct
B
Vitamin C
C
Vitamin D
D
Folate
💡
Step-by-Step Explanation & Concept Rationale
Ariboflavinosis (Vitamin B2 deficiency) characteristically manifests with angular stomatitis, cheilosis, magenta tongue, and seborrheic dermatitis of the nasolabial folds.
Q. 18
Dietetics
Difficulty: Medium
(1 Mark)
Which dietary factor inhibits calcium and zinc absorption by binding them into insoluble mineral complexes in the intestine?
A
Phytic acid (phytates in unrefined whole grains)
✓ Correct
B
Lactose
C
Citric acid
D
Casein phosphopeptides
💡
Step-by-Step Explanation & Concept Rationale
Phytic acid (myo-inositol hexakisphosphate) found in whole-wheat bran and legumes binds divalent cations (Ca2+, Zn2+, Fe2+) into insoluble chelates, reducing their bioavailability.
Q. 19
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
What is the physiological energy yield (Atwater factor) for carbohydrates, proteins, and fats per gram respectively?
A
4 kcal/g, 4 kcal/g, 9 kcal/g
✓ Correct
B
4 kcal/g, 9 kcal/g, 4 kcal/g
C
9 kcal/g, 4 kcal/g, 4 kcal/g
D
7 kcal/g, 4 kcal/g, 9 kcal/g
💡
Step-by-Step Explanation & Concept Rationale
Atwater physiological values: Carbohydrates yield 4 kcal/g, Proteins yield 4 kcal/g, Fats yield 9 kcal/g, and Alcohol yields 7 kcal/g.
Q. 20
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
Which of the following is considered an essential amino acid that cannot be synthesized endogenously by the human body?
A
Lysine
✓ Correct
B
Alanine
C
Glutamic acid
D
Glycine
💡
Step-by-Step Explanation & Concept Rationale
Lysine, Leucine, Isoleucine, Valine, Threonine, Methionine, Phenylalanine, Tryptophan, and Histidine are the 9 essential amino acids.
Q. 21
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #9: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Glycogen
✓ Correct
B
Starch
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 22
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #13: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Glycogen
✓ Correct
B
Starch
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 23
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #17: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Glycogen
✓ Correct
B
Starch
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 24
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #21: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Glycogen
✓ Correct
B
Starch
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 25
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #25: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Glycogen
✓ Correct
B
Starch
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
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Q. 1
Dietetics
Difficulty: Easy
(1 Mark)
What is the recommended daily supplemental dose of Folic Acid for women of childbearing age prior to conception to prevent Neural Tube Defects (spina bifida)?
A
400 micrograms (0.4 mg)
✓ Correct
B
5 milligrams (5,000 mcg)
C
50 micrograms
D
100 milligrams
💡
Step-by-Step Explanation & Concept Rationale
WHO and CDC recommend that all women capable of becoming pregnant consume 400 mcg (0.4 mg) of synthetic folic acid daily starting at least 1 month prior to conception through the first trimester.
Q. 2
Dietetics
Difficulty: Medium
(1 Mark)
What are the approximate additional daily energy requirements during the second and third trimesters of pregnancy, respectively?
A
+340 kcal/day and +450 kcal/day
✓ Correct
B
+1000 kcal/day and +1500 kcal/day
C
+50 kcal/day and +100 kcal/day
D
No additional calories are required
💡
Step-by-Step Explanation & Concept Rationale
Institute of Medicine (IOM) guidelines indicate zero extra calories in the 1st trimester, +340 kcal/day in the 2nd trimester, and +452 kcal/day in the 3rd trimester for a singleton pregnancy.
Q. 3
Dietetics
Difficulty: Easy
(1 Mark)
According to the World Health Organization (WHO), what is the optimal duration for exclusive breastfeeding of infants?
A
First 2 months
B
First 6 months of life
✓ Correct
C
First 12 months without any solids
D
First 3 weeks only
💡
Step-by-Step Explanation & Concept Rationale
WHO recommends exclusive breastfeeding for the first 6 months of life (no other foods or liquids, not even water), followed by continued breastfeeding up to 2 years or beyond with nutritionally adequate complementary foods.
Q. 4
Dietetics
Difficulty: Easy
(1 Mark)
Human colostrum (the initial milk secreted during the first 2-3 days postpartum) is uniquely characterized by high concentrations of:
A
Secretory Immunoglobulin A (sIgA), lactoferrin, and protein
✓ Correct
B
High lactose and high fat
C
Low protein and zero minerals
D
Pure water only
💡
Step-by-Step Explanation & Concept Rationale
Colostrum is rich in immunological factors—especially secretory IgA, lactoferrin, lysozymes, and leukocytes—providing critical passive mucosal immunity against gastrointestinal and respiratory pathogens.
Q. 5
Dietetics
Difficulty: Medium
(1 Mark)
Why should unmodified whole cow's milk NOT be introduced into an infant's diet before 12 months of age?
A
It has low iron content, high renal solute load, and can cause occult microvascular intestinal blood loss
✓ Correct
B
It contains too little protein
C
It causes immediate lactose addiction
D
It has no calcium
💡
Step-by-Step Explanation & Concept Rationale
Cow's milk contains excessive protein and minerals (high renal solute load), low bioavailable iron, and can induce occult microscopic GI bleeding in infants younger than 1 year.
Q. 6
Dietetics
Difficulty: Easy
(1 Mark)
During the adolescent growth spurt, requirement for which two micronutrients increases dramatically due to skeletal elongation and blood volume expansion?
A
Calcium and Iron
✓ Correct
B
Vitamin K and Copper
C
Sodium and Chloride
D
Fluoride and Selenium
💡
Step-by-Step Explanation & Concept Rationale
Adolescence involves rapid bone mass accretion (demanding high calcium: 1300 mg/day) and blood volume expansion/menarche (demanding increased iron for hemoglobin synthesis).
Q. 7
Dietetics
Difficulty: Medium
(1 Mark)
In elderly populations, age-related atrophic gastritis with decreased hydrochloric acid and intrinsic factor secretion leads to malabsorption of:
A
Vitamin B12 (Cobalamin)
✓ Correct
B
Vitamin C
C
Carbohydrates
D
Fatty acids
💡
Step-by-Step Explanation & Concept Rationale
Achlorhydria prevents the cleavage of Vitamin B12 from dietary protein, and diminished intrinsic factor impairs terminal ileal absorption, resulting in Vitamin B12 deficiency in older adults.
Q. 8
Dietetics
Difficulty: Medium
(1 Mark)
What is the recommended protein intake for healthy older adults (>= 65 years) to preserve muscle mass and combat sarcopenia?
A
0.5 g/kg/day
B
1.0 to 1.2 g/kg body weight/day
✓ Correct
C
0.2 g/kg/day
D
3.0 g/kg/day
💡
Step-by-Step Explanation & Concept Rationale
Due to anabolic resistance, PROT-AGE guidelines recommend 1.0-1.2 g/kg/day for healthy older adults (higher than the adult RDA of 0.8 g/kg) to maintain muscle mass and functional mobility.
Q. 9
Dietetics
Difficulty: Easy
(1 Mark)
What is the primary danger of introducing complementary solid foods to an infant earlier than 4 months of age?
A
Immature renal function, gastrointestinal extrusion reflex, and increased risk of choking and allergies
✓ Correct
B
Permanent loss of tooth enamel
C
Excessive intelligence development
D
Hypertension
💡
Step-by-Step Explanation & Concept Rationale
Before 4-6 months, infants retain the tongue-thrust (extrusion) reflex, cannot sit upright, have immature gut mucosal barriers, and possess low amylase activity, increasing allergy and aspiration risks.
Q. 10
Dietetics
Difficulty: Easy
(1 Mark)
What is the estimated additional energy cost per day for a fully lactating woman during the first 6 months postpartum?
A
Approximately +500 kcal/day
✓ Correct
B
+1500 kcal/day
C
+50 kcal/day
D
Zero additional energy
💡
Step-by-Step Explanation & Concept Rationale
Producing ~750 mL of breast milk daily expends ~650 kcal; IOM guidelines recommend an additional dietary intake of +330 to +500 kcal/day, with the balance drawn from gestational fat stores.
Q. 11
Dietetics
Difficulty: Medium
(1 Mark)
In geriatric dysphagia management, which standardized global initiative categorizes food textures and drink thicknesses from Level 0 to Level 7?
A
IDDSI (International Dysphagia Diet Standardisation Initiative)
✓ Correct
B
WHO Food Pyramid
C
HACCP Guidelines
D
APGAR Scoring Framework
💡
Step-by-Step Explanation & Concept Rationale
IDDSI provides standardized terminology and definitions from Level 0 (Thin drinks) to Level 7 (Regular foods) to ensure safety in swallowing disorders.
Q. 12
Dietetics
Difficulty: Medium
(1 Mark)
A woman with a pre-pregnancy normal BMI (18.5 - 24.9 kg/m2) has an optimal recommended total gestational weight gain of:
A
5 to 9 kg
B
11.5 to 16.0 kg (25-35 lbs)
✓ Correct
C
20 to 30 kg
D
Zero weight gain
💡
Step-by-Step Explanation & Concept Rationale
IOM guidelines recommend total weight gain of 11.5-16.0 kg (25-35 lbs) for normal BMI women, 12.5-18 kg for underweight, 7-11.5 kg for overweight, and 5-9 kg for obese mothers.
Q. 13
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
Night blindness and xerophthalmia are clinical manifestations of the deficiency of which fat-soluble vitamin?
A
Vitamin E
B
Vitamin D
C
Vitamin A (Retinol)
✓ Correct
D
Vitamin K
💡
Step-by-Step Explanation & Concept Rationale
Vitamin A is necessary for the synthesis of rhodopsin in retinal rods; its deficiency causes nyctalopia (night blindness) and dry conjunctiva.
Q. 14
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #7: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 15
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #11: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 16
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #15: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 17
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #19: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 18
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #23: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 19
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #27: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 20
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #31: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 21
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #35: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 22
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #39: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 23
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #43: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 24
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #47: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Cellulose
B
Starch
C
Glycogen
✓ Correct
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 25
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
What dietary modification is recommended as the primary nutritional therapy for celiac disease?
A
Low protein diet
B
Low sodium diet
C
Strict lifelong Gluten-Free diet
✓ Correct
D
Ketogenic diet
💡
Step-by-Step Explanation & Concept Rationale
Celiac disease is an autoimmune enteropathy triggered by gluten (found in wheat, barley, and rye); strict gluten exclusion is required.
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Q. 1
Dietetics
Difficulty: Medium
(1 Mark)
In medical nutrition therapy for pre-dialysis Chronic Kidney Disease (CKD Stages 3-4), what is the recommended daily dietary protein intake to slow progression?
A
0.6 to 0.8 g/kg body weight/day
✓ Correct
B
1.2 to 1.5 g/kg body weight/day
C
2.0 to 2.5 g/kg body weight/day
D
Unlimited protein intake
💡
Step-by-Step Explanation & Concept Rationale
KDIGO guidelines recommend restricting protein to 0.6-0.8 g/kg/day in non-dialysis CKD to diminish intraglomerular pressure and uremic toxin generation. Once on hemodialysis, protein is increased to 1.2 g/kg/day.
Q. 2
Dietetics
Difficulty: Easy
(1 Mark)
Which medical diet is universally mandated for patients with Celiac Disease (Gluten-Sensitive Enteropathy)?
A
Low-fat, low-fiber diet
B
Strict life-long gluten-free diet (eliminating Wheat, Barley, Rye, and related grains)
✓ Correct
C
Low-purine diet
D
High-protein, ketogenic diet
💡
Step-by-Step Explanation & Concept Rationale
Celiac disease is an autoimmune enteropathy triggered by gliadin peptides in gluten. Complete lifetime elimination of wheat, barley, rye, and triticale is required to restore intestinal villous architecture.
Q. 3
Dietetics
Difficulty: Easy
(1 Mark)
The Dietary Approaches to Stop Hypertension (DASH) diet is clinically proven to lower blood pressure primarily because it is rich in:
A
Potassium, Calcium, Magnesium, and dietary fiber with reduced sodium and saturated fat
✓ Correct
B
Sodium chloride and animal fats
C
Refined carbohydrates and simple sugars
D
Protein and iron supplements
💡
Step-by-Step Explanation & Concept Rationale
The DASH diet emphasizes fruits, vegetables, low-fat dairy, whole grains, nuts, and fish, delivering high levels of potassium, magnesium, calcium, and fiber while restricting sodium (< 2300 mg/day).
Q. 4
Dietetics
Difficulty: Hard
(1 Mark)
In a hospitalized patient with acute decompensated liver cirrhosis and hepatic encephalopathy, which dietary amino acid strategy is beneficial?
A
Enriching the diet with Branched-Chain Amino Acids (BCAA) while limiting Aromatic Amino Acids (AAA)
✓ Correct
B
Total protein starvation for two weeks
C
Giving high doses of phenylalanine and tryptophan
D
Restricting fluid to 200 mL/day
💡
Step-by-Step Explanation & Concept Rationale
In hepatic failure, the plasma BCAA-to-AAA ratio declines. BCAAs (leucine, isoleucine, valine) compete with AAAs (phenylalanine, tyrosine, tryptophan) across the blood-brain barrier, reducing false neurotransmitter synthesis.
Q. 5
Dietetics
Difficulty: Medium
(1 Mark)
What is the hallmark, life-threatening biochemical abnormality observed in Refeeding Syndrome when initiating nutrition in severely malnourished patients?
A
Severe Hypophosphatemia
✓ Correct
B
Severe Hyperkalemia
C
Hypernatremia
D
Hypercalcemia
💡
Step-by-Step Explanation & Concept Rationale
Carbohydrate reintroduction drives insulin release, triggering rapid cellular uptake of phosphate, potassium, and magnesium. Precipitous hypophosphatemia causes cardiac arrest, respiratory failure, and death.
Q. 6
Dietetics
Difficulty: Easy
(1 Mark)
For a patient with acute gouty arthritis and hyperuricemia, which foods should be strictly restricted?
A
Organ meats (liver, kidneys), shellfish, anchovies, beer, and high-fructose corn syrup
✓ Correct
B
Skim milk and low-fat yogurt
C
Cherries and fresh citrus fruits
D
Whole-wheat breads and oats
💡
Step-by-Step Explanation & Concept Rationale
Purines are metabolized into uric acid. High-purine foods (organ meats, small fish, meat extracts) and alcohol/fructose (which accelerates ATP degradation to AMP) drive hyperuricemia and crystal precipitation.
Q. 7
Dietetics
Difficulty: Easy
(1 Mark)
Infants diagnosed with Phenylketonuria (PKU) require complete avoidance of which synthetic intense sweetener?
A
Sucralose
B
Aspartame
✓ Correct
C
Saccharin
D
Stevia
💡
Step-by-Step Explanation & Concept Rationale
Aspartame is a methyl ester of the aspartic acid/phenylalanine dipeptide. In the GI tract, it hydrolyzes to liberate free phenylalanine, which is toxic to the brain in PKU patients.
Q. 8
Dietetics
Difficulty: Easy
(1 Mark)
What is the recommended dietary management for an acute flare of Gastroesophageal Reflux Disease (GERD)?
A
Small frequent meals, avoidance of high-fat foods, chocolate, caffeine, mint, and remaining upright for 2-3 hours post-meal
✓ Correct
B
Large meals before bedtime
C
Drinking orange juice and tomato soup before sleeping
D
High-fat dairy intake
💡
Step-by-Step Explanation & Concept Rationale
Fat, peppermint, caffeine, and chocolate relax the lower esophageal sphincter (LES). Recumbency post-meal facilitates acid reflux; elevating the head of the bed and small meals mitigate reflux.
Q. 9
Dietetics
Difficulty: Easy
(1 Mark)
In managing conscious diabetic patients experiencing acute hypoglycemia (blood glucose < 70 mg/dL), the 'Rule of 15' directs the patient to:
A
Consume 15 grams of fast-acting simple carbohydrates, wait 15 minutes, and recheck blood glucose
✓ Correct
B
Inject 15 units of regular insulin immediately
C
Drink 15 glasses of cold water
D
Fast for 15 hours
💡
Step-by-Step Explanation & Concept Rationale
The 15-15 rule: Administer 15g of fast-acting glucose (e.g., 1/2 cup fruit juice, 3-4 glucose tablets), wait 15 minutes, and re-test. If still < 70 mg/dL, repeat the 15g treatment.
Q. 10
Dietetics
Difficulty: Medium
(1 Mark)
In patients with acute exacerbations of Inflammatory Bowel Disease (Crohn's disease / Ulcerative Colitis), which dietary modification is indicated?
A
Low-residue / low-fiber diet
✓ Correct
B
High-roughage raw vegetable diet
C
High-fat ketogenic diet
D
Unpasteurized whole milk diet
💡
Step-by-Step Explanation & Concept Rationale
A low-residue/low-fiber diet reduces mechanical irritation of the inflamed bowel wall, minimizes fecal volume, and relieves abdominal cramping and stricture obstruction during acute flares.
Q. 11
Dietetics
Difficulty: Easy
(1 Mark)
What is the daily sodium restriction target commonly recommended by the American Heart Association for patients with Stage 2 Hypertension or Congestive Heart Failure?
A
Less than 1,500 to 2,000 mg of sodium per day
✓ Correct
B
5,000 to 6,000 mg of sodium per day
C
Zero sodium per day
D
10,000 mg of sodium per day
💡
Step-by-Step Explanation & Concept Rationale
AHA guidelines recommend restricting sodium intake to < 2,300 mg/day for the general public and ideally < 1,500 mg/day in hypertensive individuals and congestive heart failure patients to prevent fluid overload.
Q. 12
Dietetics
Difficulty: Medium
(1 Mark)
Enteral tube feeding is contraindicated in which of the following clinical conditions?
A
Complete mechanical intestinal obstruction or paralytic ileus
✓ Correct
B
Facial fracture with intact gastrointestinal tract
C
Mild stroke with dysphagia
D
Comatose patient with normal gut motility
💡
Step-by-Step Explanation & Concept Rationale
When the gastrointestinal tract is non-functional, obstructed, infarcted, or suffering intractable vomiting/paralytic ileus, enteral nutrition is contraindicated and total parenteral nutrition (TPN) is required.
Q. 13
Dietetics
Difficulty: Medium
(1 Mark)
In Chronic Pancreatitis with exocrine pancreatic insufficiency and steatorrhea, what is the primary medical nutrition intervention?
A
Pancreatic Enzyme Replacement Therapy (PERT) taken with meals along with moderate fat and fat-soluble vitamin supplementation
✓ Correct
B
High-fat diet without enzymes
C
Protein-free diet
D
Complete avoidance of water
💡
Step-by-Step Explanation & Concept Rationale
Pancreatic exocrine insufficiency leads to maldigestion of triglycerides. Enteric-coated pancreatic enzyme microtablets (lipase/protease/amylase) taken with meals correct fat malabsorption and steatorrhea.
Q. 14
Dietetics
Difficulty: Easy
(1 Mark)
Which dietary component should be restricted in patients with end-stage renal disease (ESRD) to prevent cardiac arrest and life-threatening arrhythmias?
A
Potassium
✓ Correct
B
Iron
C
Vitamin C
D
Zinc
💡
Step-by-Step Explanation & Concept Rationale
Failing kidneys cannot excrete potassium. Hyperkalemia (> 5.5-6.0 mEq/L) can cause fatal ventricular fibrillation; hence high-potassium foods (bananas, potatoes, tomatoes, dates) must be restricted.
Q. 15
Dietetics
Difficulty: Hard
(1 Mark)
In patients with calcium oxalate nephrolithiasis (kidney stones), which dietary practice is recommended?
A
Adequate dietary calcium intake with meals (to bind oxalate in the gut) and avoidance of high-oxalate foods (spinach, rhubarb, nuts)
✓ Correct
B
Complete elimination of dietary calcium
C
Severely restricting water intake
D
High doses of Vitamin C supplements
💡
Step-by-Step Explanation & Concept Rationale
Restricting dietary calcium increases free gut oxalate absorption, exacerbating urinary stone formation. Maintaining normal dietary calcium allows it to bind oxalate in the intestinal lumen to form unabsorbable feces complexes.
Q. 16
Dietetics
Difficulty: Easy
(1 Mark)
Which of the following is considered a 'monounsaturated fatty acid' (MUFA) that benefits cardiovascular health by lowering LDL while maintaining HDL?
A
Oleic acid (found in Olive Oil)
✓ Correct
B
Palmitic acid
C
Stearic acid
D
Lauric acid
💡
Step-by-Step Explanation & Concept Rationale
Oleic acid (18:1 n-9) is the predominant monounsaturated fatty acid in olive oil, canola oil, and avocados, improving the lipid profile without lowering atheroprotective HDL.
Q. 17
Dietetics
Difficulty: Medium
(1 Mark)
In severe burn injuries (> 30% TBSA), the patient's resting metabolic rate increases up to 100%. What is the priority nutritional goal?
A
High-calorie, high-protein diet (1.5 to 2.0 g/kg/day) to prevent catabolic wasting and support re-epithelialization
✓ Correct
B
Low-protein diet to spare renal function
C
Fasting for the first week
D
Clear fluids only
💡
Step-by-Step Explanation & Concept Rationale
Burn injuries induce profound hypermetabolism, proteolysis, and urinary nitrogen loss. Providing early enteral nutrition with high protein (1.5-2.0 g/kg) and glutamine/zinc/vitamin C is vital for wound healing.
Q. 18
Dietetics
Difficulty: Easy
(1 Mark)
What is the recommended maximum intake of saturated fat for individuals aiming to reduce risk of coronary heart disease according to clinical guidelines?
A
Less than 7% to 10% of total daily energy intake
✓ Correct
B
At least 30% of total daily energy intake
C
50% of total calories
D
No limit
💡
Step-by-Step Explanation & Concept Rationale
The American Heart Association and WHO recommend restricting saturated fatty acids to < 7-10% of daily calories, substituting them with polyunsaturated and monounsaturated fatty acids.
Q. 19
Dietetics
Difficulty: Medium
(1 Mark)
In cystic fibrosis, what dietary intervention is essential to address pancreatic duct blockage and nutrient malabsorption?
A
High-calorie, high-fat, high-salt diet accompanied by exogenous pancreatic enzyme replacement with all meals
✓ Correct
B
Low-fat, low-salt diet
C
Ketogenic starvation diet
D
Low-protein vegan diet
💡
Step-by-Step Explanation & Concept Rationale
Cystic fibrosis patients lose substantial sodium in sweat and suffer pancreatic exocrine insufficiency; they require a hypercaloric (110-200% RDA), high-fat diet with extra salt and enzyme supplements.
Q. 20
Dietetics
Difficulty: Medium
(1 Mark)
Which laboratory parameter is widely used in clinical nutrition to reflect recent protein-energy status changes over a 2-3 day window due to its short half-life?
A
Serum Prealbumin (Transthyretin)
✓ Correct
B
Serum Albumin
C
Serum Ferritin
D
Hemoglobin A1c
💡
Step-by-Step Explanation & Concept Rationale
Prealbumin (transthyretin) has a short half-life of ~2 days (compared to 20 days for albumin), making it a sensitive indicator of acute nutritional recovery or acute inflammatory/catabolic shifts.
Q. 21
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
Deficiency of Vitamin C (Ascorbic acid) leads to which classic nutritional deficiency disease?
A
Rickets
B
Scurvy
✓ Correct
C
Pellagra
D
Beri-beri
💡
Step-by-Step Explanation & Concept Rationale
Vitamin C is essential for collagen synthesis; deficiency causes scurvy characterized by bleeding gums, skin hemorrhages, and impaired wound healing.
Q. 22
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #6: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Starch
B
Glycogen
✓ Correct
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 23
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #10: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Starch
B
Glycogen
✓ Correct
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 24
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #14: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Starch
B
Glycogen
✓ Correct
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
Q. 25
Nutrition & Dietetics
Difficulty: EASY
(1 Mark)
In nutritional biochemistry #18: What is the primary storage polysaccharide of glucose in the human liver and skeletal muscle?
A
Starch
B
Glycogen
✓ Correct
C
Cellulose
D
Dextrin
💡
Step-by-Step Explanation & Concept Rationale
Glycogen is a branched polymer of glucose serving as the primary short-term energy reserve in animals.
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