Q. 1
General Knowledge
Difficulty: Easy
(1 Mark)
The drugs caffeine, tannin and nicotine are:
💡
Step-by-Step Explanation & Concept Rationale
Alkaloids are a group of naturally occurring organic compounds that contain mostly basic nitrogen atoms and have physiological effects on humans.
Q. 2
General Knowledge
Difficulty: Easy
(1 Mark)
The type of crop which is able to fix nitrogen from air is known as:
💡
Step-by-Step Explanation & Concept Rationale
Legumes (like peas and beans) have a symbiotic relationship with Rhizobium bacteria in their root nodules that convert atmospheric nitrogen into a usable form.
Q. 3
General Knowledge
Difficulty: Easy
(1 Mark)
The saliva helps in the digestion of:
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Step-by-Step Explanation & Concept Rationale
Saliva contains the enzyme amylase (ptyalin), which begins the chemical breakdown of complex starches into simpler sugars like maltose.
Q. 4
General Knowledge
Difficulty: Easy
(1 Mark)
Amniocentesis is a method for:
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Step-by-Step Explanation & Concept Rationale
While used to detect genetic abnormalities, amniocentesis allows for the analysis of foetal chromosomes, which reveals the sex of the child.
Q. 5
General Knowledge
Difficulty: Easy
(1 Mark)
A recently developed technique for monitoring foetal growth uses:
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Step-by-Step Explanation & Concept Rationale
Medical ultrasonography uses high-frequency sound waves to create images of the foetus, as it is non-ionizing and safe for prenatal care.
Q. 6
General Knowledge
Difficulty: Easy
(1 Mark)
If there were no organic life on the Earth, the amount of oxygen in the atmosphere will:
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Step-by-Step Explanation & Concept Rationale
Nearly all atmospheric oxygen is a byproduct of photosynthesis performed by living organisms over billions of years.
Q. 7
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is not an element of the bone?
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Step-by-Step Explanation & Concept Rationale
Note: While bone contains organic carbon, the key (c) identifies it as the "non-mineral" element compared to the primary inorganic constituents.
Q. 8
General Knowledge
Difficulty: Easy
(1 Mark)
Inspection and dissection of a body after death... is called:
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Step-by-Step Explanation & Concept Rationale
An autopsy is a highly specialized surgical procedure that consists of a thorough examination of a corpse to determine the cause of death.
Q. 9
General Knowledge
Difficulty: Easy
(1 Mark)
The bulkiest muscle in the human body is found in:
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Step-by-Step Explanation & Concept Rationale
The gluteus maximus, located in the hip/buttocks, is the largest and heaviest muscle in the human body.
Q. 10
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following trees grows the fastest?
💡
Step-by-Step Explanation & Concept Rationale
Some species of bamboo are the fastest-growing plants on Earth, with growth rates of up to 91 cm (36 in) in a 24-hour period.
Q. 11
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is not a contagious disease?
💡
Step-by-Step Explanation & Concept Rationale
Contagious diseases are spread by pathogens; hysteria is a psychological or neurological condition and is not infectious.
Q. 12
General Knowledge
Difficulty: Easy
(1 Mark)
‘Pasteurized Milk’ is:
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Step-by-Step Explanation & Concept Rationale
Pasteurization involves heating milk to a specific temperature for a set time to eliminate pathogens and extend shelf life.
Q. 13
General Knowledge
Difficulty: Easy
(1 Mark)
Deficiency of vitamin C causes:
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Step-by-Step Explanation & Concept Rationale
Scurvy results from a lack of Vitamin C (ascorbic acid), which is essential for the synthesis of collagen in humans.
Q. 14
General Knowledge
Difficulty: Easy
(1 Mark)
Hydrophobia is related to:
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Step-by-Step Explanation & Concept Rationale
Hydrophobia (fear of water) is a characteristic symptom of the later stages of a rabies infection in humans.
Q. 15
General Knowledge
Difficulty: Easy
(1 Mark)
The Bacteriophages are:
💡
Step-by-Step Explanation & Concept Rationale
Bacteriophages (phages) are viruses that infect and replicate within bacteria and archaea.
Q. 16
General Knowledge
Difficulty: Easy
(1 Mark)
Silkworm eats:
💡
Step-by-Step Explanation & Concept Rationale
The larvae of the domestic silkmoth (Bombyx mori) feed exclusively on the leaves of white mulberry trees.
Q. 17
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following birds is a flightless bird?
💡
Step-by-Step Explanation & Concept Rationale
The emu is a large, flightless ratite native to Australia; while hens have limited flight, the emu is biologically incapable of it.
Q. 18
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is an oxygen carrier?
💡
Step-by-Step Explanation & Concept Rationale
Red Blood Cells contain hemoglobin, the iron-rich protein that binds to and transports oxygen throughout the body.
Q. 19
General Knowledge
Difficulty: Medium
(1 Mark)
What does blood consist of:
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Step-by-Step Explanation & Concept Rationale
Human blood typically consists of roughly 55-60% liquid plasma and 40-45% formed elements like red and white cells.
Q. 20
General Knowledge
Difficulty: Easy
(1 Mark)
Pituitary gland is located just below the:
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Step-by-Step Explanation & Concept Rationale
The pituitary (master gland) is located at the base of the brain, seated in a bony hollow called the sella turcica.
Q. 21
General Knowledge
Difficulty: Easy
(1 Mark)
What is the normal process of losing heat?
💡
Step-by-Step Explanation & Concept Rationale
Sweat production (evaporative cooling) is the human body's primary physiological mechanism for dissipating excess heat.
Q. 22
General Knowledge
Difficulty: Easy
(1 Mark)
What is necessary for photosynthesis?
💡
Step-by-Step Explanation & Concept Rationale
Photosynthesis is the process where plants use sunlight, water, and carbon dioxide to create energy (glucose) and oxygen.
Q. 23
General Knowledge
Difficulty: Easy
(1 Mark)
‘Parasexual’ means the fusion of:
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Step-by-Step Explanation & Concept Rationale
The parasexual cycle is a non-meiotic mechanism for transferring genetic material, involving the fusion of nuclei (karyogamy).
Q. 24
General Knowledge
Difficulty: Medium
(1 Mark)
Which... is not a function of blood in human body?
💡
Step-by-Step Explanation & Concept Rationale
Blood serves as a transport medium for gases and waste, and acts as a central regulator of body temperature.
Q. 25
General Knowledge
Difficulty: Easy
(1 Mark)
Rose propagation is done by:
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Step-by-Step Explanation & Concept Rationale
While roses can be seeded, vegetative propagation via stem cuttings is the standard method for cloning specific varieties.
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