Q51
Allen
1. GENETIC MATERIAL, DNA
MCQ
If the sequence of bases in one strand of DNA is known then the sequence in other strand can be predicted on the basis of: –
A.
Antiparallel
B.
Complementary
C.
Polarity
D.
Coiling
Q52
Allen
2. DNA REPLICATION
MCQ
In process of replication deoxyribonucleoside triphosphate:-
A.
acting as substrate
B.
providing energy for polymerisation reaction
C.
acting as an enzyme
D.
Both (1) and (2)
Q53
Allen
2. DNA REPLICATION
MCQ
DNA Replication occurs at :-
A.
G₀ & G1
B.
G₂-stage
C.
S-Stage
D.
Mitotic phase
Q54
Allen
2. DNA REPLICATION
MCQ
A DNA molecule in which both strands have radioactive thymidine is allowed to duplicate in an environment containing non-radioactive thymidine. What will be the exact number of DNA molecules that contains the radioactive thymidine after 3 duplications?
A.
One
B.
Two
C.
Four
D.
Eight BMI049
Q55
Allen
2. DNA REPLICATION
MCQ
A bacterium with completely radioactive DNA was allowed to replicate in a nonradioactive medium for two generation what % of the bacteria should contain radioactive DNA ?
A.
100 %
B.
50 %
C.
25 %
D.
12.5 %
Q56
Allen
2. DNA REPLICATION
MCQ
In the base sequence of one strand of DNA is GAT, TAG, CAT, GAC what shall be the sequence of its complementary strand?
A.
CAT, CTG, ATC, GTA
B.
GTA, ATC, CTG, GTA
C.
ATC, GTA, CTG, GTA
D.
CTA, ATC, GTA, CTG
Q57
Allen
2. DNA REPLICATION
MCQ
Method of DNA replication in which two strands of DNA separates and synthesize new strands?
A.
Dispersive
B.
Conservative
C.
Semiconservative
D.
Non-conservative
Q58
Allen
2. DNA REPLICATION
MCQ
During replication of a bacterial chromosome DNA synthesis starts from a replication origin site and :-
A.
RNA primers are not involved
B.
is facilitated by telomerase
C.
moves in one direction of the site
D.
moves in bi-directional way
Q59
Allen
2. DNA REPLICATION
MCQ
The nature of DNA replication is :-
A.
Conservation
B.
Non-conservative
C.
Semi-conservative
D.
Cyanobacteria
Q60
Allen
2. DNA REPLICATION
MCQ
The direction of DNA replication is :-
A.
From 5' end towards 3' end
B.
From 3' end towards 5' end
C.
Amino terminus to carboxy terminus
D.
Carboxy terminus to amino terminus BMI055
Q61
Allen
2. DNA REPLICATION
MCQ
Semiconservative replication of DNA was proposed by :-
A.
Watson and Crick
B.
Bateson and Punnett
C.
Meselson and Stahl
D.
Avery, McCarty and MacLeod
Q62
Allen
2. DNA REPLICATION
MCQ
Which of the following enzyme is used in DNA multiplication?
A.
RNA polymerase
B.
DNA endonuclease
C.
Exonuclease
D.
DNA Polymerase
Q63
Allen
2. DNA REPLICATION
MCQ
Mode of DNA replication in E. coli is :-
A.
Conservative and unidirectional
B.
Semi conservative and unidirectional
C.
conservative and bidirectional
D.
Semi conservative and bidirectional
Q64
Allen
2. DNA REPLICATION
MCQ
Which of the following enzyme is used to join DNA fragments?
A.
Terminase
B.
Endonuclease
C.
Ligase
D.
DNA polymerase
Q65
Allen
2. DNA REPLICATION
MCQ
Okazaki fragments are synthesised on :-
A.
Leading strands of DNA only
B.
Lagging strands of DNA only
C.
Both leading and lagging strands of DNA
D.
Complementary DNA
Q66
Allen
2. DNA REPLICATION
MCQ
DNA replication includes :-
A.
DNA ligase
B.
DNA polymerase and ligase
C.
RNA polymerase and ligase
D.
All of these
Q67
Allen
2. DNA REPLICATION
MCQ
In DNA replication, the primer is :-
A.
A small deoxyribonucleotide polymer
B.
A small ribonucleotide polymer
C.
Helix destabilizing protein
D.
Enzyme taking part in joining nucleotides of new strand
Q68
Allen
2. DNA REPLICATION
MCQ
The strand of DNA, which does not code for anything is referred to as :-
A.
Template strand
B.
Antisense strand
C.
Coding strand
D.
Noncoding strand
Q69
Allen
2. DNA REPLICATION
MCQ
During DNA replication discontinuously synthesized fragments are later joined by the enzyme :—
A.
Ligase
B.
DNA polymerase
C.
RNA primer
D.
Primase
Q70
Allen
2. DNA REPLICATION
MCQ
Replication fork is :—
A.
Large opening of the DNA helix
B.
Small opening of the DNA helix
C.
Tightly coiled part of DNA helix
D.
Loosely coiled part of DNA helix
Q71
Allen
2. DNA REPLICATION
MCQ
The DNA dependent DNA polymerase catalyse polymerisation in:—
A.
3' → 5' direction
B.
5' → 3' direction
C.
Depend on the nature of template strand
D.
Both (1) and (2) BMI066
Q72
Allen
2. DNA REPLICATION
MCQ
Main enzyme of DNA replication is :—
A.
DNA dependent RNA polymerase
B.
DNA dependent DNA polymerase
C.
RNA dependent RNA polymerase
D.
RNA dependent DNA polymerase BN
Q73
Allen
3. RNA, TRANSCRIPTION
MCQ
The Process of copying genetic information from one strand of DNA intoY is termed as Z
A.
Transcription - RNA
B.
RNA - Transcription
C.
DNA - Translation
D.
Replication - RNA
Q74
Allen
3. RNA, TRANSCRIPTION
MCQ
Code in RNA corresponding to AGCT in DNA:
A.
TACA
B.
UCGA
C.
TCGA
D.
AGUC
Q75
Allen
3. RNA, TRANSCRIPTION
MCQ
Which of the following is called adaptor molecule?
A.
DNA
B.
m-RNA
C.
t-RNA
D.
RNA