section 11 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following is synthesized by intestinal bacteria?

a) Vitamin K

b) Vitamin C

c) Vitamin $B_{12}$

d) Both (A) and (C)

Question : 2

The slow growth of the human body is caused due to the deficiency of which of the following?

a) Proteins

b) Vitamins

c) Fats

d) None of these

Question : 3

The disease ‘Tetanus’ is also known as

a) Lock jaw

b) Gangrene

c) Shingles

d) Whooping cough

Question : 4

Dengue is a fever caused and transmitted to another human by

a) Fungus and female Aedes mosquito

b) Virus and female Aedes mosquito

c) Bacteria and female Culex mosquito

d) Protozoan and female Anopheles mosquito

Question : 5

Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?

a) They neutralize the free radicals produced in the body during metabolism

b) They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy

c) They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin deficiency

d) They activate certain genes in the cells of the body and help delay the aging process

Question : 6

Starch is a

a) Polysaccharide

b) Disaccharide

c) Monosaccharide

d) None of the above