1. Beriberi is a result of deficiency of which of the following?
[A] Riboflavin
[B] Thaimine
[C] Pyridoxine
[D] Cobalamine
Show Answer
Correct Answer: B [Thaimine]
Notes:
Vitamine B (Thiamine) deficiency produces beriberi, Wernicke-Korsakoff syndrome, and optic neuropathy.
Beriberi is a neurological and cardiovascular disease. The three major forms of the disorder are dry beriberi, wet beriberi, and infantile beriberi. Dry beriberi is characterized principally by muscular dysfunctions, while Wet beriberi is associated with mental confusion, muscular atrophy, edema. Infantile beriberi occurs in infants breast-fed by thiamin-deficient mothers.
2. Which of the following is a Gymnosperm?
[A] Cashew
[B] Chilgoza
[C] Pistachio
[D] None of the above
Show Answer
Correct Answer: B [Chilgoza]
Notes:
The gymnosperms, also known as Acrogymnospermae, are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes. Pinus gerardiana, known as the chilgoza pine is a king of Gymnosperm.
3. Which of the following is a micronutrient that helps in nitrogen metabolism of plants?
[A] Zinc
[B] Copper
[C] Molybdenum
[D] Sulphur
Show Answer
Correct Answer: C [Molybdenum]
Notes:
Nitrogen metabolism is not only one of the basic processes of plant physiology, but also one of the important parts of global chemical cycle. The molybdenum nitrogenase is responsible for most biological nitrogen fixation.
4. Excessive consumption of which substance may lead to the development of cirrhosis?
[A] Alcohol
[B] Tobacco
[C] Caffeine
[D] Carbonated soft drinks
Show Answer
Correct Answer: A [Alcohol]
Notes:
Cirrhosis is a late stage of scarring (fibrosis) of the liver caused by many forms of liver diseases and conditions, such as hepatitis and chronic alcoholism. Alcoholism is the most common cause of cirrhosis in the world. It occurs when the liver is damaged over time and cannot function properly, leading to scarring and eventually cirrhosis.
5. Which among the following have a ‘mixed heart’ ,that is the heart in which the oxygenated and the deoxygenated blood is mixed?
[A] Birds
[B] Fishes
[C] Reptiles
[D] Nematodes
Show Answer
Correct Answer: C [Reptiles]
Notes:
Reptiles and Amphibians have a mixed heart.
6. Which of the following statements is incorrect about Down syndrome?
[A] It is a genetic disorder
[B] It is typically associated with physical growth delays
[C] There is no cure for Down syndrome
[D] It impairs the body’s ability to make blood clots
Show Answer
Correct Answer: D [ It impairs the body’s ability to make blood clots]
Notes:
Down syndrome mainly affects hearing, vision, the circulatory system and the bone systems.
7. Which of the following scientists discovered Bacteriophage?
[A] Frederick W. Twort
[B] Gottlieb Daimler
[C] John Dalton
[D] James Dwight Dana
Show Answer
Correct Answer: A [Frederick W. Twort]
Notes:
Bacteriophage, also called phage or bacterial virus, any of a group of viruses that infect bacteria. Bacteriophages were discovered independently by Frederick W. Twort in Great Britain in 1915. It is a virus which parasitizes a bacterium by infecting it and reproducing inside it. Bacteriophages are much used in genetic research.
8. Which of the following functions is performed by the kidneys in the human body?
[A] Transportation
[B] Excretion
[C] Respiration
[D] Digestion
Show Answer
Correct Answer: B [Excretion]
Notes:
The primary route in which the body eliminates substances is through the kidneys. The main function of the kidney is the excretion of body wastes and harmful chemicals into the urine.
9. Why there are more anti-bacterial drugs than anti-viral drugs?
[A] Bacterial diseases are intra-cellular
[B] Viral diseases are intra-cellular
[C] Virus is smaller than bacteria
[D] Drugs can penetrate bacteria more effectively
Show Answer
Correct Answer: B [Viral diseases are intra-cellular]
Notes:
Viruses infect all sorts of cells, from bacteria to human cells, but for the most part tend to be host specific. For example, the tobacco mosaic virus infects certain plants; the rabies virus infects only mammals; and the AIDS virus, HIV, infects only certain human blood cells.
10. With reference to the blood in a normal person, which one of the following statements is correct?
[A] Compared to arteries, veins are less numerous and hold less of the body’s blood at any given time
[B] Blood cells constitute about 70 per cent of the total volume of the blood
[C] White Blood Cells (WBC) are made by lymph nodes only
[D] The blood has more platelets than WBC
Show Answer
Correct Answer: D [The blood has more platelets than WBC]
Notes:
Blood has more platelets than corpuscles. A microlitre of blood contains 5,000-10,000 of White blood cells (WBC) and 150,000-500,000 platelets.
