DNA,RNA and Protein Metabolism MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on DNA,RNA and Protein Metabolism, a fundamental topic in the field of Biochemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our DNA,RNA and Protein Metabolism MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of DNA,RNA and Protein Metabolism mcq questions that explore various aspects of DNA,RNA and Protein Metabolism problems. Each MCQ is crafted to challenge your understanding of DNA,RNA and Protein Metabolism principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our DNA,RNA and Protein Metabolism MCQs are your pathway to success in mastering this essential Biochemistry topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of DNA,RNA and Protein Metabolism. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your DNA,RNA and Protein Metabolism knowledge to the test? Let's get started with our carefully curated MCQs!

DNA,RNA and Protein Metabolism MCQs | Page 6 of 37

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Q51.
30 nm wide helix with five or six nucleosomes per helix is known as

a.

solenoid

b.

halonoid

c.

kinoplast

d.

none of these

Discuss
Answer: (a).solenoid
Q52.
Which of the following is used to determine the appropriate stringency (Wallace rule)?

a.

Tm = 2 x (No.of G:C base pair) + 4 x (No.of A:T base pair)

b.

Tm = 4 x (No.of A:T base pair) + 2 x (No.of G:C base pair)

c.

Tm = 4 x (No.of G:C base pair) + 2 x (No.of A:T base pair)

d.

Tm = 69.3° + 0.41 (%)G+C -650/1

Discuss
Answer: (c).Tm = 4 x (No.of G:C base pair) + 2 x (No.of A:T base pair)
Q53.
One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?

a.

Conservative theory

b.

Dispersive theory

c.

Semi-conservative theory

d.

Evolutionary theory

Discuss
Answer: (b).Dispersive theory
Q54.
DNA polymerases I also has

a.

5'-3' exonuclease activity

b.

3'-5'exonuclease activity

c.

both (a) and (b)

d.

5'-3' endonuclease activity

Discuss
Answer: (b).3'-5'exonuclease activity
Q55.
Without telomerase, what would happen to the ends of chromosomes after each round of replication?

a.

Chromosomes would become progressively shorter

b.

Nothing would happen

c.

Chromosomes would get longer

d.

none of the above

Discuss
Answer: (a).Chromosomes would become progressively shorter
Q56.
What is the approximate percentage of repetitive DNA sequences in human DNA?

a.

10 to 20%

b.

20 to 30%

c.

30 to 40%

d.

40 to 50%

Discuss
Answer: (b).20 to 30%
Q57.
The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by

a.

using enzyme called telomerase

b.

shortening of the double stranded replicated portion

c.

using RNA as a template

d.

none of the above

Discuss
Answer: (a).using enzyme called telomerase
Q58.
The rapid appearance of HIV-1 strains that are resistant to AIDS drugs is due in part to which of the following property of its reverse transcriptase?

a.

AZT (zidovudine) is too expensive to be taken in effective doses

b.

The RNase H domain of p66 causes error prone synthesis

c.

It lacks a proofreading exonuclease

d.

It has low affinity for the correct dNTP's

Discuss
Answer: (c).It lacks a proofreading exonuclease
Q59.
The packing ratio of nucleosomes is about

a.

6

b.

8

c.

7

d.

9

Discuss
Answer: (c).7
Q60.
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

a.

One

b.

Two

c.

Three

d.

A smear

Discuss
Answer: (a).One
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