Explore topic-wise MCQs in Biology.

This section includes 256 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

251.

Regular intake of

A. They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin deficiency.
B. They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy
C. They neutralize the free radicals produced in the body during metabolism
D. They activate certain genes in the cells of the body and help delay the ageing process
Answer» D. They activate certain genes in the cells of the body and help delay the ageing process
Discussion
252.

It begins as a

A. Cancer
B. AIDS
C. Tuberculosis
D. Alzheimer's disease
Answer» B. AIDS
Discussion
253.

Due contraction of

A. Farther objects which is corrected by using convey lens
B. Farther objects which is corrected by using concave lens
C. Nearer objects which is corrected by using convey lens
D. Nearer objects which is corrected by using concave lens
Answer» B. Farther objects which is corrected by using concave lens
Discussion
254.

Consider the following conditions of a sick human body

A. 1 and 2
B. 2, 3 and 4
C. 1, 3 and 4
D. 1, 2, 3 and 4
Answer» E.
Discussion
255.

Jaundice

A. Incomplete metabolism of bilverdin
B. Complete metabolism of biliverdin
C. Incomplete metabolism of bilirubin
D. Complete metabolism of bilirubin
Answer» D. Complete metabolism of bilirubin
Discussion
256.

What may cause a

A. Stretching of the tympanic
B. Damage to the middle ear ossicles
C. Increased impulses to the cochlea
D. Vibration in the bony labyrinths of the inner ear
Answer» B. Damage to the middle ear ossicles
Discussion