Molecular Basis of Inheritance Test

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Molecular Basis of Inheritance Test - 81

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Weekly Quiz Competition

Question 1
1 / -0

DNA polymerases I and II are generally used in DNA replication.

A
For proof reading & repair

B
Adding carbonyl compound

C
Breaking and joining pieces of one DNA strand

D
To cut the helix at certain places
Question 2
1 / -0

What is the impact of the human genome project on human welfare?

A
Gene therapy

B
Improved diagnosis of a disease

C
Reduces the likelihood of heritable diseases

D
All of the above
Question 3
1 / -0

The Okazaki fragments in DNA chain growth _______________.

A
result in transcription

B
polymerise in the 3 to 5' direction and forms replication fork

C
prove semi-conservative nature of DNA replication

D
polymerise in the 5' to 3' direction
Question 4
1 / -0

Which of the following is true about DNA polymerase?

A
It can synthesize DNA in the 5' to 3' direction

B
It can synthesize DNA in the 3' to 5' direction

C
It can synthesize DNA in both directions

D
Depend upon the condition

Solution

DNA polymerase is an enzyme that synthesizes DNA molecule from deoxyribonucleotides. DNA polymerase moves in only one 5'-3' direction, and creating a new strands.
So, the correct answer is option A.
Question 5
1 / -0

Select the correct statement:

A
DNA polymerase has high degree of accuracy

B
During DNA replication, only one strand of DNA act as template for synthesis of new strand.

C
Taylor has proved by his experiment that DNA is the genetic material

D
E. coli has $$4.6 \times 10^9$$ bp in its genetic material
Question 6
1 / -0

Which property of genetic code is utilised in wobble hypothesis?

A
Degeneracy

B
Non-overlapping

C
Non-ambiguous

D
Universal
Question 7
1 / -0

A replication fork is shown in the figure. Identify the template DNA.

A
A only

B
C only

C
B only

D
Both B and C
Question 8
1 / -0

According to finding from the Human Genome Project, there are about 25000 genes but there are amny more different polypeptides. Which of the following processes might explain the discrepancy between number of genes and polypeptides?
(1) Mutations
(2) Post-translational modifications
(3) Crossing over during meiosis
(4) Alternating splicing of RNA transcripts

A
1 & 2

B
2 & $

C
1,3 & 4

D
3 & 4
Question 9
1 / -0

The commonly used hosts in HGP ________________.

A
Bacteria and yeast

B
Bacteria and fungi

C
Protozoa and bacteria

D
Plants and fungi
Question 10
1 / -0

Deoxyribonucleoside triphosphates serve dual purposes in DNA replication. In addition to acting as substrate, the other function is similar to?

A
DNA polymerase

B
rRNA

C
Topoisomerase

D
ATP

Solution

Answer :
i) The Deoxyribonucleoside Triposphate act as both energy (ATP) and substrate for the polymerization reaction.
ii) The Deoxyribonucleoside Triposohate (DTPs) is considered as the building block of DNA synthesis.
iii) The DTPs possess two high-energy phosphate that has the ability to provide energy to the replication by breaking their molecules.
iv) It serves as a substrate that is consumed during the enzymatic reaction of replication.
So correct answer is option D.ATP.

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Molecular Basis of Inheritance Test - 81

Result

Molecular Basis of Inheritance Test - 81

Score

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SHARING IS CARING

Question 1

For proof reading & repair

Adding carbonyl compound

Breaking and joining pieces of one DNA strand

To cut the helix at certain places

Question 2

Gene therapy

Improved diagnosis of a disease

Reduces the likelihood of heritable diseases

All of the above

Question 3

result in transcription

polymerise in the 3 to 5' direction and forms replication fork

prove semi-conservative nature of DNA replication

polymerise in the 5' to 3' direction

Question 4

It can synthesize DNA in the 5' to 3' direction

It can synthesize DNA in the 3' to 5' direction

It can synthesize DNA in both directions

Depend upon the condition

Solution

Question 5

DNA polymerase has high degree of accuracy

During DNA replication, only one strand of DNA act as template for synthesis of new strand.

Taylor has proved by his experiment that DNA is the genetic material

E. coli has $$4.6 \times 10^9$$ bp in its genetic material

Question 6

Degeneracy

Non-overlapping

Non-ambiguous

Universal

Question 7

A only

C only

B only

Both B and C

Question 8

1 & 2

2 & $

1,3 & 4

3 & 4

Question 9

Bacteria and yeast

Bacteria and fungi

Protozoa and bacteria

Plants and fungi

Question 10

DNA polymerase

rRNA

Topoisomerase

ATP

Solution

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