section 5 MCQ Questions & Answers Detailed Explanation

Question : 1

Antigen is a substance which

a) triggers the immune system

b) lowers body temperatures

c) destroys harmful bacteria

d) is used as an antidote to poison

Question : 2

Which one of the following statements is not correct?

a) One of the symptoms of scurvy is pain in the joints

b) Vitamin-A (retinol) deficiency leads to the dry and scaly skin

c) Milk contains none of the B-vitamins

d) Vitamin $B_1$ (thiamine) deficiency can lead to heart failure

Question : 3

Foot and Mouth disease in animals, a current epidemic in some parts of the world, is caused by

a) Protozoan

b) Bacterium

c) Fungus

d) Virus

Question : 4

Metastasis is

a) Transfer of cancer cells from one part of the body to another

b) Fast mitosis in cancer cells

c) Part of regeneration

d) All of the above

Question : 5

The reason of dental caries is

a) Bacterial infection

b) Viral infection

c) Contaminated water

d) Hereditary reason

Question : 6

Assertion (A):
Human diet should compulsorily contain glycine, serine and tyrosin.
Reason (R):
Essential amino acids cannot be synthesized in the human body.

a) (A) is true, but (R) is false

b) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

c) Both (A) and (R) are true and (R) is the correct explanation of (A)

d) (A) is false, but (R) is true