Free Human Body and Health MCQs with Answers

31. One of the following is a water soluble vitamin?

• A. Vitamin A
• B. Vitamin D
• C. Vitamin K
• D. None

Explanation: Vitamins B and C are water-soluble, whereas vitamins A, D, E and K are fat-soluble. Since none of the listed options is B or C, the answer is 'None'.

32. The dominant phase of life cycle in these organism is haploid?

• A. Mosses
• B. Bacteria
• C. Protozoa
• D. None

Explanation: In mosses, the conspicuous and nutritionally independent plant is the haploid gametophyte, while the diploid sporophyte remains attached to it. This is why mosses are contrasted with plants having a dominant diploid phase.

33. The biggest species of the cat family is___________?

• A. Tiger
• B. Lion
• C. Leopard
• D. None

Explanation: The tiger is the largest living member of the cat family, although individual lions can sometimes be very large. Leopards are considerably smaller than both.

34. The field of specialization of famous Muslim scientist Abu Usman Aljahiz was?

• A. Botany
• B. Zoology
• C. Astronomy
• D. None

Explanation: Abu Usman Al-Jahiz is remembered for zoological writing, especially his work on animals and their behaviour. He was not primarily an astronomer or botanist.

35. What is the average adult pulse rate?

• A. 140-150
• B. 115-125
• C. 72-80
• D. 60

Explanation: A normal resting adult pulse is commonly about 60 to 100 beats per minute, with 72 to 80 often used as the average range. Exercise, stress, illness and fitness can change the rate.

36. When a person enters a dark room from bright light he is not able to see clearly for a little while because the?

• A. Eye is unable to adjust itself immediately
• B. Retina becomes insensitive momentarily
• C. Iris is unable to dilate the pupil immediately
• D. Distance between the lens and retina take time to adjust

Explanation: In bright light, the iris keeps the pupil constricted; entering darkness requires time for the pupil to dilate and for the retina to adapt. Thus the immediate problem is delayed adjustment of the iris and pupil.

37. Which part of the Camera is analogue to the retina in the human eye?

• A. Lens
• B. Film
• C. Aperture
• D. Shutter

Explanation: The retina receives the focused image and converts light into nerve signals, just as photographic film records the image in a camera. The camera lens corresponds more closely to the eye lens.

38. Dolly is the name of the ?

• A. First cloned sheep
• B. First cloned monkey
• C. First test-tube baby
• D. First human fossil

Explanation: Dolly was the first mammal cloned from an adult body cell, making her the first cloned sheep. She was produced in 1996 using somatic-cell nuclear transfer.

39. Dialysis is used for the treatment of__________?

• A. Kidney failure
• B. Heart weakness
• C. Brain diseases
• D. None of these

Explanation: Dialysis filters wastes and excess fluid from the blood when the kidneys can no longer perform this function adequately. It is therefore used in serious kidney failure.

40. ECG is used for the diagnosis of aliments of ?

• A. Brain
• B. Heart
• C. Kidneys
• D. Lungs

Explanation: An ECG records the heart’s electrical activity through electrodes placed on the skin. Abnormal rhythms and some evidence of heart damage can be detected from its tracing.