11. In typhoid which of the following drugs is administered?
[A] Chloromycetin
[B] Penicillin
[C] Sulphonamide
[D] Tetracycline
Show Answer
Correct Answer: A [Chloromycetin]
Notes:
Chloromycetin or Chloramphenicol is the drug of choice in the treatment of this disease. It has been the antibiotic of choice for patients with typhoid fever for more than 30 years, although ampicillin and cotrimoxazole are also used.
12. Which of the following is caused by massive deforestation?
[A] Soil erosion
[B] Famine
[C] Floods
[D] None of these
Show Answer
Correct Answer: A [Soil erosion]
Notes:
Deforestation causes soil erosion. Tree roots anchor the soil. Without trees, the soil is free to wash or blow away, which can lead to vegetation growth problems.
13. Which of the following arteries supplies blood to the heart?
[A] Carotid arteries
[B] Hepatic arteries
[C] Coronary arteries
[D] Pulmonary arteries
Show Answer
Correct Answer: C [Coronary arteries]
Notes:
The aorta (the main blood supplier to the body) branches off into two main coronary blood vessels (also called arteries). These coronary arteries branch off into smaller arteries, which supply oxygen-rich blood to the entire heart muscle. The right coronary artery supplies blood to the right side of the heart.
14. Fertility of soil can be improved by which of the following methods?
[A] Removing dead earthworms
[B] Adding dead earthworms
[C] Adding living earthworms
[D] Removing living earthworms and adding dead earthworms
Show Answer
Correct Answer: C [Adding living earthworms]
Notes:
Worms help to increase the amount of air and water that gets into the soil. They break down organic matter, like leaves and grass into things that plants can use. When they eat, they leave behind castings that are a very valuable type of fertilizer. Earthworms are like free farm help.
15. Which among the following is not a viral disease?
[A] Ebola
[B] HIV
[C] H1N1
[D] Tuberculosis
Show Answer
Correct Answer: D [Tuberculosis]
Notes:
Tuberculosis is a bacterial disease where as the remaining three are viral diseases.
Extra info: India is working towards achieving TB free India by 2025.
Nikshay portal is associated with TB.
16. Which pigment is responsible for the colour of healthy skin in human beings?
[A] Bilirubin
[B] Haemoglobin
[C] Melanin
[D] Progesterone
Show Answer
Correct Answer: C [Melanin]
Notes:
The single most factor responsible for the cpolour of the skin is the pigment melanin. It is secreted by the melanocytes within the skin.
17. Who among the following is considered to be the father of DNA?
[A] James Watson
[B] Hargobind Khurana
[C] Alec Jeffereys
[D] Leslie Orgel
Show Answer
Correct Answer: A [James Watson]
Notes:
James Dewey Watson is an American molecular biologist, geneticist, and zoologist. In 1953, he co-authored with Francis Crick the academic paper proposing the double helix structure of the DNA molecule.
18. Which of the following statements about the cell wall is false?
[A] cell wall is mainly composed of lipid
[B] cell wall is mainly composed of starch
[C] cell wall is mainly composed of protein
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The cell wall is a structural layer surrounding cells, just outside the cell membrane. It can be hard, flexible and rigid.
19. In which part of the body cholesterol is synthesized?
[A] Pancreas
[B] Liver
[C] Spleen
[D] Stomach
Show Answer
Correct Answer: B [Liver]
Notes:
Cholesterol is a type of Lipid or the fat present in blood. The majority of the cholesterol consumed by the human body on a daily basis is synthesised by Liver.
20. What are the gametes produced by meiosis called?
[A] Coenogametes
[B] Meiogametes
[C] Mitogametes
[D] None of these
Show Answer
Correct Answer: B [Meiogametes]
Notes:
Coenogametes are gametes with multiple nuclei. Mitogametes are gametes produced by mitosis. The gametes produced by meiosis are called meiosis.
