Free Molecular Basis Of Inheritance (Daily Quiz: 12) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Molecular Basis Of Inheritance (Daily Quiz: 12) Time:

Question-1

Which protein is indicated by 'a' in the figure?

molecular-basis-of-inheritance-neet-mcq-8-28-70-71

(a)

(b)

(c)

(d)


Question-2

Assertion (A) Replication on one strand of DNA is continuous and on another it is discontinuous.
Reason (R) The DNA polymerase works in 3′→ 5′ direction.

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

The DNA-dependent DNA polymerase works in the 5′ → 3′ direction requiring a free 3′–OH of a pre-existing polynucleotide for initiating DNA replication. Thus, it continuously synthesises the strand having polarity 5′ → 3′.

Replication of the lagging strand (5′→ 3′) generates small polynucleotide fragments, okazaki fragments. The replication of this strand is discontinuous.


Question-3

RNA → DNA is termed as

(a)

(b)

(c)

(d)


Question-4

What is indicated by 'n' in the figure?

molecular-basis-of-inheritance-neet-mcq-8-28-29-32

(a)

(b)

(c)

(d)


Question-5

Assertion (A) mRNA has some untranslated regions that are not translated.
Reason (R) UTRs are required for efficient translation.

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.

mRNA has some additional sequences that are not translated known as Untranslated Regions (UTR). The UTRs are present at both 5′ end (before start codon) and at 3′ end (after stop codon). These are required for efficient translation process.


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