Free Biomolecules (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Hexokinase (Glucose + ATP → Glucose 6-P + ADP) belongs to the category

(a) lyases

(b) transferases

(c) oxidoreductases

(d) isomerases

Question-2

The Watson-Crick Structure of DNA is

(a) 2° structure

(b) 1° structure

(c) 3° structure

(d) 4° Structure

Question-3

One turn of the helix in a B-form DNA is approximately

(a) 0.34 nm

(b) 20 nm

(c) 3.4 nm

(d) 2 nm

Question-4

Identify A.

(a) Phosphate bond

(b) Glycosidic bond

(c) Ester bond

(d) Ionic bond

Question-5

The acid used for preliminary separation of biomolecule in a living tissue is

(a) benzoic acid

(b) trichlorobenzoic acid

(c) trichloroacetic acid

(d) acetic acid

Question-6

Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?

(a) B: Uracil A component of DNA

(b) A: Triglyceride Major source of energy

(c) A: Lecithin A component of cell membrane

(d) B: Adenine A nucleotide that makes up nucleic acids

Question-7

Why the velocity of enzymatic reaction is not exceeded by any further rise in the concentration of the substrate?

(a) The enzyme molecules are fewer than the substrate molecules

(b) The enzyme molecules are equal to the substrate molecules.

(c) The substrate molecules are not closely resembled to the enzyme molecules.

(d) Both a and c.

Question-8

Which factor is responsible for inhibition of enzymatic process during feedback?

(a) Enzymes

(b) Substrate

(c) End product

(d) Temperature

Question-9

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by

(a) base-sugar-OH.

(b) base-sugar-phosphate.

(c) ${\text"(base-sugar-phosphate)"_{n}$.

(d) sugar-phosphate.

Question-10

Macromolecule chitin is

(a) Phosphorus containing polysaccharide

(b) Nitrogen containing polysaccharide

(c) Sulphur containing polysaccharide

(d) Simple polysaccharide