Molecular Basis of Inheritance Test

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Molecular Basis of Inheritance Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

Okazaki fragments during DNA replication

A
Polymerise in 3' $$\rightarrow$$ 5' direction and form replication fork

B
Prove semiconservative nature of DNA replication

C
Polymerise in 5'$$\rightarrow$$ 3' direction and explain 3' $$\rightarrow$$ 5' DNA replication

D
Cause transcription
Question 2
1 / -0

DNA replication requires

A
DNA polymerase

B
DNA ligase

C
RNA polymerase

D
All the above
Question 3
1 / -0

Find out the correct options
1. Frederick Griffith - Transformation
2. Gamow - Triplet code
3. Meselson - Isolated DNA

A
1, 2, 3 correct

B
1, 2 correct

C
2, 3 correct

D
1, 3 correct
Question 4
1 / -0

A + G = C + T is applicable to

A
rRNA

B
tRNA

C
mRNA

D
DNA
Question 5
1 / -0

Diagram represents central dogma of molecular biology. Choose correct combination of labeling

A
a-Protein, b-RNA, c-DNA, d-Translation, e-Transcription

B
a-DNA, b-RNA, c-Protein, dTranscription, eTranslation

C
a-RNA, b-DNA, c-Protein, dTranscription, e-Translation

D
a-Transcription, b-Translation, c-Protein, d- DNA, e-RNA

E
a-DNA, b-RNA, c-Protein, d-Translation, e-Transcription
Question 6
1 / -0

What is not true for genetic code ?

A
It is degenerate

B
It is nearly universal

C
A code in mRNA is read in a noncontiguous fashion

D
It is unambiguous
Question 7
1 / -0

Which is not salient feature of genetic code

A
Ambiguous

B
Universal

C
Specific

D
Degenerate

Solution

Genetic code is non-ambiguous. Non- ambiguous code means that there is no ambiguity about a particular code. One codon specifies only one amino acid and not any other. There are 64 codons. Out of 64, 3 are stop codons or nonsense codons, i.e., these do not code for any amino acid and rest 61 code for one of the 20 amino acids. Neither of them code for more than one amino acids except GUG which normally code for valine but in certain conditions it also codes for N-formyl methionine as initiation codon.
So, the correct option is A.
Question 8
1 / -0

Okazaki is known for his contribution to the understanding ofOkazaki is related to

A
Transcription

B
Translation

C
Mutation

D
DNA replication
Question 9
1 / -0

RNA primer is used in

A
Translation

B
Replication

C
Conjugation

D
Transformation
Question 10
1 / -0

Whose experiments cracked DNA and discovered triplet nature of genetic code?

A
Beadle and Tatum

B
Hershey and Chase

C
Morgan and Sturtevant

D
Nirenberg and Matthaei

Solution

Marshall Nirenberg and Heinrich J. Matthaei were the first to reveal the nature of a codon in 1961. So the correct option is ' Nirenberg and Matthaei'.

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Molecular Basis of Inheritance Test - 67

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Molecular Basis of Inheritance Test - 67

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SHARING IS CARING

Question 1

Polymerise in 3' $$\rightarrow$$ 5' direction and form replication fork

Prove semiconservative nature of DNA replication

Polymerise in 5'$$\rightarrow$$ 3' direction and explain 3' $$\rightarrow$$ 5' DNA replication

Cause transcription

Question 2

DNA polymerase

DNA ligase

RNA polymerase

All the above

Question 3

1, 2, 3 correct

1, 2 correct

2, 3 correct

1, 3 correct

Question 4

rRNA

tRNA

mRNA

DNA

Question 5

a-Protein, b-RNA, c-DNA, d-Translation, e-Transcription

a-DNA, b-RNA, c-Protein, dTranscription, eTranslation

a-RNA, b-DNA, c-Protein, dTranscription, e-Translation

a-Transcription, b-Translation, c-Protein, d- DNA, e-RNA

a-DNA, b-RNA, c-Protein, d-Translation, e-Transcription

Question 6

It is degenerate

It is nearly universal

A code in mRNA is read in a noncontiguous fashion

It is unambiguous

Question 7

Ambiguous

Universal

Specific

Degenerate

Solution

Question 8

Transcription

Translation

Mutation

DNA replication

Question 9

Translation

Replication

Conjugation

Transformation

Question 10

Beadle and Tatum

Hershey and Chase

Morgan and Sturtevant

Nirenberg and Matthaei

Solution

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