31. How many numbers of bones are present in the middle ear?
[A] Two
[B] Three
[C] Six
[D] Nine
Show Answer
Correct Answer: B [Three]
Notes:
The middle ear contains three tiny bones:
1. Hammer (malleus) — attached to the eardrum.
2. Anvil (incus) — in the middle of the chain of bones.
3. Stirrup (stapes) — attached to the membrane-covered opening that connects the middle ear with the inner ear.
32. Which immunity is acquired throughout life?
[A] Innate immunity
[B] Active immunity
[C] Passive immunity
[D] Both 2 and 3
Show Answer
Correct Answer: D [Both 2 and 3]
Notes:
The immunity that develops over a person’s lifetime. The two types of acquired immunity are active immunity and passive immunity.
33. What is the role of ADH in kidney function?
[A] It controls the amount of water absorption by the nephrons.
[B] It helps in excretion of toxic nitrogenous compounds.
[C] It regulates the amount of glucose processed and excreted by the kidneys.
[D] None of these
Show Answer
Correct Answer: A [It controls the amount of water absorption by the nephrons.]
Notes:
Antidiuretic Hormone (ADH) controls the amount of water absorption by the nephrons. It is also called arginine vasopressin.
34. Which of the following is protein hormone?
[A] Oxytocin
[B] Insulin
[C] TSH
[D] Antidiuretic hormone
Show Answer
Correct Answer: B [Insulin]
Notes:
Insulin and human growth hormone are protein hormones while oxytocin and antidiuretic hormones are peptide hormones. TSH or Thyroid Stimulating Hormone consists of carbohydrates attached to protein hence it comes under glycoprotein hormone.
35. Which gland is responsible for the release of Neurohormone?
[A] Hypothalamus
[B] Pituitary
[C] Thyroid
[D] Pancreas
Show Answer
Correct Answer: A [Hypothalamus]
Notes:
The Hypothalamus, positioned in the brain, is the gland responsible for the release of Neurohormone. Neurohormones are versatile and can perform various functions depending on the body’s needs, this can include releasing or inhibiting different hormones. This overall mechanism is critical to maintaining the body’s internal balance, or homeostasis, and oversees critical bodily functions, such as sleep, hunger, thirst, and body temperature.
36. Name the hormone which takes part in the release of FSH and LH from the anterior pituitary.
[A] Growth hormone
[B] GnRH
[C] Somatostatin
[D] TRH
Show Answer
Correct Answer: B [GnRH]
Notes:
GnRH is the gonadotropin-releasing hormone, which is responsible for the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
37. Chickenpox is a highly contagious disease caused by the __
[A] Pasteurella pestis
[B] Bacillus anthracis
[C] Bordetella pertussis
[D] Varicella zoster
Show Answer
Correct Answer: D [Varicella zoster ]
Notes:
Chickenpox is a highly contagious disease caused by the varicella zoster virus.
38. Which disease is caused by Yersinia pestis?
[A] Pertussis
[B] Plague
[C] Leprosy
[D] Diptheria
Show Answer
Correct Answer: B [Plague]
Notes:
Plague disease is caused by Yersinia pestis bacterium which is spread mostly by fleas on rodents and other animals.
39. Which organ is affected by typhoid?
[A] liver
[B] spleen
[C] muscles
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Typhoid is a bacterial infection that is caused by Salmonella typhi. The bacteria attack the gastrointestinal tract, which includes the liver, spleen, and muscles.
40. Mendel did not give __.
[A] Concept of genes
[B] Concept of inheritance
[C] Concept of dominance
[D] Concept of chromosomes
Show Answer
Correct Answer: D [Concept of chromosomes]
Notes:
Mendel did not give the Concept of chromosomes. The chromosomal theory of inheritance was given by Boveri and Sutton.
