1. Schizophrenia is an example of _________?
[A] Allergy
[B] Mental Illness
[C] Organic Degenerative Diseases
[D] None of the above
Show Answer
Correct Answer: B [Mental Illness]
Notes:
Schizophrenia is an example of mental illness. It is a serious mental disorder in which people interpret reality in an abnormal manner. It can result into hallucinations, delusions, and extremely disordered thinking and behavior that impairs daily functioning, and can be disabling.
2. Who among the following is best known for his discovery and development of the first safe and effective polio vaccine.?
[A] Jonas Salk
[B] David Bodian
[C] Almroth Wright
[D] Albert Sabin
Show Answer
Correct Answer: A [Jonas Salk]
Notes:
Jonas Edward Salk was an American virologist and medical researcher who developed one of the first successful polio vaccines. He announced on a national radio show that he has successfully tested a vaccine against polio.
3. Which among the following does not fall in the category of morbid fear or Phobia?
[A] Claustrophobia
[B] Photophobia
[C] Algophobia
[D] Anthophobia
Show Answer
Correct Answer: B [Photophobia]
Notes:
Photophobia is not a fear. It is excessive sensitivity to light and the aversion to sunlight or well-lit places,
Claustrophobia is fear of confined places,
Algophobia is fear of pain,
Anthophobia is fear of flowers,
4. What is the average life of Red Blood cells in our body?
[A] 30-40 days
[B] 70-80 days
[C] 100-120 days
[D] 160-180 days
Show Answer
Correct Answer: C [100-120 days]
Notes:
Red blood cells (RBCs) have an average lifespan of 100-120 days and are produced in the bone marrow, while the spleen is where they are broken down. Macrophages break down RBCs into globin and heme, recycling amino acids and iron for various purposes, including protein synthesis. Some parts of old RBCs are reused in creating new ones. The average lifespan of cells in the human body is 7 to 10 years, but it varies across cell types and organs. Neutrophil cells, for example, last about two days.
5. The bacterium ‘Escherichia coli’ is found mainly in:
[A] Human Intestine
[B] Pteridophytes
[C] Root Nodules of leguminous plants
[D] Paddy fields for nitrogen fixation
Show Answer
Correct Answer: A [Human Intestine]
Notes:
Escherichia coli, also known as E. coli, is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia. It is a type of bacteria that normally lives in your intestines.
6. Which among the following blood vessels has the smallest diameter?
[A] Arterioles
[B] Capillaries
[C] Venules
[D] Lymphatic
Show Answer
Correct Answer: B [Capillaries]
Notes:
Blood is carried through the body by Blood Vessels. With the help of perfusion process capillaries supplies blood to the tissues. The diameter of capillary ranges from 5-10 micrometers. The diameter of arteriole is approximately 30 micrometer.
7. 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.
8. Which of the following diseases is hereditary? (UPSC Prelims 1987)
[A] Haemophilia
[B] Tuberculosis
[C] Cancer
[D] Dysentery
Show Answer
Correct Answer: A [Haemophilia]
Notes:
Haemophilia is a mostly inherited genetic disorder that impairs the body’s ability to make blood clots, a process needed to stop bleeding. This results in people bleeding longer after an injury, easy bruising, and an increased risk of bleeding inside joints or the brain.
9. Consider the following effects of genetic engineering:
- Disease resistance
- Growth promotion
- Closing
- Longevity
Of these effects, those that have be entried out with a certain amount of success include (UPSC Prelims 1990)
[A] 1, 3 and 4
[B] 2, 3 and 4
[C] 1, 2 and 4
[D] 1, 2 and 3
Show Answer
Correct Answer: D [1, 2 and 3]
Notes:
Genetic engineering can have effects on many things but till now the scientists have not found any way to increase longevity by genetic engineering.
10. Which among the following is not a part of Vitamin B complex?
[A] Vitamin B2
[B] Vitamin B4
[C] Vitamin B6
[D] Vitamin B12
Show Answer
Correct Answer: B [Vitamin B4]
Notes:
Vitamin B complex consists of 8 vitamins namely B1(Thiamine), B2(Riboflavin), B3(Niacin), B5(Pantothenic acid), B6(Pyridoxine), B7(Biotin), B9(Folate/Folic acid) and B12(Cobalamin).
