Biological Sciences MCQs (Set 1)

31. CT Scan is done by using ___________.

  • A. Infra-red rays
  • B. Visible light
  • C. Ultrasonic waves
  • D. X-rays
View Answer
Correct Answer:
D. X-rays

Explanation:
……

32. White blood cells act ________________.

  • A. As a defence against infection
  • B. As source of energy
  • C. For clotting blood
  • D. As a medium for oxygen transport from lungs to tissues
View Answer
Correct Answer:
A. As a defence against infection

Explanation:
……

33. Hypertension is the term used for _____________.

  • A. Decrease in heart rate
  • B. Increase in heart rate
  • C. Decrease in blood pressure
  • D. Increase in blood pressure
View Answer
Correct Answer:
D. Increase in blood pressure

Explanation:
……

34. Loss of memory is caused by the destruction of ___________.

  • A. Medulla
  • B. Cerebrum
  • C. Cerebellum
  • D. Pons
View Answer
Correct Answer:
B. Cerebrum

Explanation:
……

35. What is the average adult pulse rate?

  • A. 140-150
  • B. 115-125
  • C. 72-80
  • D. 60
View Answer
Correct Answer:
C. 72-80

Explanation:
……

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