Free Biomolecules (Daily Quiz: 12) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

In the DNA molecule

(a) there are two strands which run parallel in the 5' → 3' direction

(b) the total amount of purine nucleotides and pyrimidine nucleotides is not always equal

(c) the proportion of adenine in relation to thymine varies with the organism

(d) there are two strands which run antiparallel-one in 5' → 3' direction and other in 3' → 5'

Question-2

Assertion:
Coenzyme is a nonprotein group without which enzymes are inactive or incomplete.
Reason:
Coenzymes not only provide a point of attachment for the chemical group being transformed but also influence the properties of the group.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.

Question-3

Quaternary structure is present in ________.

(a) histone

(b) haemoglobin

(c) globulin

(d) elastin

Question-4

In animals, glucose is stored as ________ while in plants stored as ________________

(a) Starch, glycogen

(b) Cellulose, starch

(c) Cellulose, glycogen

(d) Glycogen, starch

Question-5

Which of the following is not a macromolecule?

(a) Polysaccharides

(b) Nucleic acid

(c) Lipids

(d) Proteins