Molecular Basis of Inheritance Test

Question 1
1 / -0

Which of the following is/are the characteristic(s) of genes?

A
Replication and transmission to progeny

B
Mutability

C
Storage of hereditary information

D
All of the above

Question 2
1 / -0

Which of the following does not define the transcription unit in DNA?

A
Terminator

B
Promoter

C
Intron

D
Structural gene

Question 3
1 / -0

Which of the following RNA polymerase enzymes catalyse(s) the synthesis of all types of RNA?

A
RNA polymerase I

B
RNA polymerase II

C
RNA polymerase III

D
All of the above

Question 4
1 / -0

In a genetic code, some codons do not code for amino acids that function as stop codons. Which of the following does not belong to this group?

A
UAG

B
UAA

C
UUU

D
UGA

Question 5
1 / -0

Which of the following codons has a dual function?

A
AUG

B
UUU

C
UGA

D
UAA

Question 6
1 / -0

In point mutation, how many base pairs are inserted or deleted?

A
Three

B
Multiples of three

C
Two

D
One

Question 7
1 / -0

Which of the following shows the correct type of mutation that takes place on insertion of three bases?

A
Inserts multiple codons

B
Inserts one codon

C
Alters the reading frame from the point of insertion

D
Inserts multple amino acids

Question 8
1 / -0

How many loops does tRNA of a stop codon have?

A
There is one loop; an anticodon loop.

B
There are two loops; an anticodon loop and an amino acid acceptor end.

C
There are three loops; an anticodon loop, an amino acid acceptor end and ribosomal binding loop.

D
There are no tRNAs.

Question 9
1 / -0

Which of the following sequences of the steps involved in the process of polymerisation of amino acids to form a polypeptide is correct?

(1) Activation of amino acids, Termination of polypeptide synthesis, Elongation of polypeptide synthesis, Initiation of polypeptide synthesis
(2) Initiation of polypeptide synthesis, Activation of amino acids, Elongation of polypeptide synthesis, Termination of polypeptide synthesis
(3) Termination of polypeptide synthesis, Elongation of polypeptide synthesis, Activation of amino acids, Initiation of polypeptide synthesis
(4) Activation of amino acids, Initiation of polypeptide synthesis, Elongation of polypeptide synthesis, Termination of polypeptide synthesis

A
(1)

B
(2)

C
(3)

D
(4)

Question 10

1 / -0

Match the following:

1.	Splicing	a.	Addition of methyl guanosine triphosphate at 5'–end
2.	Capping	b.	Addition of adenylate residues at 3'–end
3.	Tailing	c.	Removal of non-coding introns

Molecular Basis...

Question 1

Replication and transmission to progeny

Mutability

Storage of hereditary information

All of the above

Question 2

Terminator

Promoter

Intron

Structural gene

Question 3

RNA polymerase I

RNA polymerase II

RNA polymerase III

All of the above

Question 4

UAG

UAA

UUU

UGA

Question 5

AUG

UUU

UGA

UAA

Question 6

Three

Multiples of three

Two

One

Question 7

Inserts multiple codons

Inserts one codon

Alters the reading frame from the point of insertion

Inserts multple amino acids

Question 8

There is one loop; an anticodon loop.

There are two loops; an anticodon loop and an amino acid acceptor end.

There are three loops; an anticodon loop, an amino acid acceptor end and ribosomal binding loop.

There are no tRNAs.

Question 9

(1)

(2)

(3)

(4)

Question 10

1 - c, 2 - b, 3 - a

1 - c, 2 - a, 3 - b

1 - a, 2 - c, 3 - b

1 - b, 2 - a, 3 - c

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