Molecular Basis of Inheritance Test

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Molecular Basis of Inheritance Test - 69

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Weekly Quiz Competition

Question 1
1 / -0

What is correct about genetic code

A
It has 61 codons for amino acids and 3 stop codons

B
It is universal and has 3 bases per codon

C
Some amino acids are coded by multiple codons

D
All the above
Question 2
1 / -0

Number of histone molecules in each nucleosome core is

A
14

B
12

C
10

D
8
Question 3
1 / -0

Semiconservative replication of DNA was studied in E. coli with the help of $$^{15}N$$ by

A
Watson and Crick

B
Kornberg and Ochoa

C
Meselson and Stahl

D
Luria and Delbruck

Solution

The semiconservative nature of DNA was first demonstrated in E.coli by Mathew Messelson and Franklin Stahl.
Watson and Crick proposed the double helical structure of DNA.
So, the correct option is 'Meselson and Stahl'
Question 4
1 / -0

Which statement is more correct about genetic code?

A
It is absolutely universal

B
It is nearly universal

C
It is not universal

D
It is obselete and of no use

Solution

A codon specifies the same amino acid in every organism. For instance, UGU codon codes for cysteine in every organism. Thus, the genetic code is absolutely universal.
So, the correct answer is option A.
Question 5
1 / -0

In Griffiths experiment, the conversion of R- type to S-type of Diplococcus pneumoniae when mixed with heat-killed S-type is called

A
Mutation

B
Transduction

C
Transfection

D
Transformation
Question 6
1 / -0

Who shared the Nobel Prize for the discovery of DNA structure

A
Watson, Crick and Franklin

B
Watson, Crick and Wilkins

C
Watson, Crick and Pauling

D
Watson, and Crick only
Question 7
1 / -0

During DNA replication, the addition of nucleotides on the lagging strand occurs

A
Towards the replicating fork

B
At a faster rate than leading strand

C
Continuously

D
Discontinuously
Question 8
1 / -0

Which Indian molecular biologist was awarded Noble Prize for the discovery of genetic code

A
Khorana

B
Ramakrishnan

C
Kashyap

D
Raman
Question 9
1 / -0

Choose the correct statement

A
Haploid content of human DNA is 4.6 x $$10^6$$ bp

B
A nitrogenous base is linked to pentose sugar through phosphodiester linkage

C
X-ray diffraction data of Maurice Wilkins and Rosalind Franklin was the basis of Watson and Cricks DNA model

D
DNA as an acidic substance was first identified by Watson and Crick

E
Ratios between adenine, thymine, guanine and cytisine are not constant
Question 10
1 / -0

How many sense codons code for 20 human essential amino acids

A
61

B
62

C
63

D
64

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Molecular Basis of Inheritance Test - 69

Result

Molecular Basis of Inheritance Test - 69

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SHARING IS CARING

Question 1

It has 61 codons for amino acids and 3 stop codons

It is universal and has 3 bases per codon

Some amino acids are coded by multiple codons

All the above

Question 2

14

12

10

8

Question 3

Watson and Crick

Kornberg and Ochoa

Meselson and Stahl

Luria and Delbruck

Solution

Question 4

It is absolutely universal

It is nearly universal

It is not universal

It is obselete and of no use

Solution

Question 5

Mutation

Transduction

Transfection

Transformation

Question 6

Watson, Crick and Franklin

Watson, Crick and Wilkins

Watson, Crick and Pauling

Watson, and Crick only

Question 7

Towards the replicating fork

At a faster rate than leading strand

Continuously

Discontinuously

Question 8

Khorana

Ramakrishnan

Kashyap

Raman

Question 9

Haploid content of human DNA is 4.6 x $$10^6$$ bp

A nitrogenous base is linked to pentose sugar through phosphodiester linkage

X-ray diffraction data of Maurice Wilkins and Rosalind Franklin was the basis of Watson and Cricks DNA model

DNA as an acidic substance was first identified by Watson and Crick

Ratios between adenine, thymine, guanine and cytisine are not constant

Question 10

61

62

63

64

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