Multiple Choice Questions - NET, SET, MSc, PhD
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Regular and unique practice MCQs for Section B of CSIR, GATE, GAT-B, ICMR, and DBT. Helpful in various SET, NET, MSc, BSc, Biology exams.

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Which of the following acts as a precursor for the activation of peptidoglycan?
Anonymous Quiz
10%
TP
41%
UDP
40%
NADPH
8%
GTP
1
👍2🤩1
Each turn of Calvin cycle results in the fixation of ________ molecule of carbon dioxide.
Anonymous Quiz
17%
one
50%
two
17%
four
16%
six
👍2
👍1
If the chromosome were extended linearly then it would approximately measure?
Anonymous Quiz
45%
13500 micrometre
25%
1000 micrometre
26%
1250 micrometre
4%
500 micrometre
👍1
DNA gyrase is a ______________ protein.
Anonymous Quiz
43%
helix-unwinding
17%
helix-destabilizing
25%
helix-relaxing
16%
helix-winding
1
Which of the following enzyme removes the RNA primer with its 5’-nuclease activity?
Anonymous Quiz
38%
DNA polymerase I
25%
DNA polymerase II
25%
DNA polymerase III
13%
RNA polymerase
👍2
Translation takes place before transcription.
Anonymous Quiz
33%
True
67%
False
👍2
Which of the following bacteria can synthesize all of the amino acids required for protein synthesis?
Anonymous Quiz
54%
E.coli
16%
Lactobacillus bravis
19%
Saccharomyces cerevisiae
11%
Bacillus subtilis
👍5
RNAase is a single polypeptide chain of __________ amino acid residues.
Anonymous Quiz
17%
2
31%
350
19%
4
33%
124
👍3
Protein synthesis in bacteria takes place on which of the following organelles?
Anonymous Quiz
26%
Endoplasmic Reticulum
11%
Golgi body
58%
Ribosomes
5%
Mitochondria
👍3
Rho factor is a dimeric protein factor.
Anonymous Quiz
75%
True
25%
False
🔥1
The following code codes for which of the amino acid respectively?
**AUG and GUG**
Anonymous Quiz
14%
Phenylalanine, tyrosine
46%
Methionine, valine
36%
Methionine, alanine
4%
Lysine, valine
1
Which of the following are non-sense codons?
Anonymous Quiz
12%
AUG
13%
GUG
60%
UAA
15%
UCU
1
The activation of amino acids requires energy.
Anonymous Quiz
84%
True
16%
False
👍2
tRNA has a _______________ structure.
Anonymous Quiz
7%
strand-like
6%
ball-like
83%
clover-leaf
5%
leaf-like
👍2
Transfer RNA is a single chain of ___________ nucleotides.
Anonymous Quiz
26%
340
33%
about 100
24%
about 80
18%
200
😢1
The ribosome of E.coli is made up of which two subunits?
Anonymous Quiz
23%
60S and 40S
19%
60S and 30S
13%
50S and 40S
45%
50S and 30S
👍2
The endoflagella is present in which class of bacteria?
Anonymous Quiz
18%
Spirilla
51%
Spirochetes
24%
Bacillus
7%
Coccus
🔥1
Spirochetes like other bacteria swim best in media of low viscosity.
Anonymous Quiz
74%
True
26%
False
👍1