Free Biomolecules (Daily Quiz: 7) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Assertion:
Cellulose doesn't give colour with $I_2$.
Reason:
Cellulose doesn't contain helix which can hold $I_2$.

(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-2

Chitin is present in

(a) Cell wall of fungus

(b) Exoskeleton of arthropods

(c) Setae of earthworm

(d) All of these

Question-3

Which is the most abundant protein in biosphere?

(a) RuBisCO

(b) Collagen

(c) Myosin

(d) Haemoglobin

Question-4

Which of the following is correct about secondary structure?

(a) In proteins only left handed helices are observed.

(b) Helix is a primary structure.

(c) In proteins only right handed helices are observed.

(d) None of these

Question-5

The percentage of oxygen in human body is

(a) 46.6%

(b) 65%

(c) 18.5%

(d) 3.3%