IIT-JAM-BT SERIES Biotechnology
Molecular Biology
14 previous year questions.
Volume: 14 Ques
Yield: Medium
High-Yield Trend
9
2021 5
2017 Chapter Questions 14 MCQs
01
PYQ 2017
medium
biotechnology ID: iit-jam-
In bacteria, a ribosome synthesizes a protein containing 300 amino acids from mRNA in 20 seconds. If the average lifetime of an mRNA is 2 minutes, the number of ribosomes that can translate a single mRNA containing 1350 nucleotides is .............
02
PYQ 2017
medium
biotechnology ID: iit-jam-
The result of an electrophoretic separation of a mixture of amino acids X, Y and Z at pH = 5.0 is represented as (Given the isoelectric points of X, Y and Z are 9.87, 3.22 and 5.43, respectively) 
1
A
2
B
3
C
4
D
03
PYQ 2017
medium
biotechnology ID: iit-jam-
A linear DNA contains five restriction sites for EcoRI and three restriction sites for BamHI. The number of fragments that will be generated after digestion with EcoRI is .............
04
PYQ 2017
medium
biotechnology ID: iit-jam-
Which of the following is true of protein synthesis ONLY in prokaryotes?
1
Translation and transcription are coupled
2
The codon AUG codes for the start signal
3
The tRNA anticodon can bind to two or more different codons
4
The functional ribosomes contain two subunits constructed of proteins and RNA
05
PYQ 2017
medium
biotechnology ID: iit-jam-
Which of the following is NOT involved in eukaryotic translation?
1
Ribosome
2
Spliceosome
3
mRNA
4
tRNA
06
PYQ 2021
medium
biotechnology ID: iit-jam-
Which of the following molecular genetic technique(s) is/are used in forensic science?
1
Coimmunoprecipitation
2
DNA fingerprinting
3
Restriction fragment length polymorphism
4
Electrophoretic mobility shift assay
07
PYQ 2021
medium
biotechnology ID: iit-jam-
Which of the following is/are common to both prokaryotic and eukaryotic gene expression?
1
Coupled transcription and translation
2
Post-translational modification
3
Genetic code
4
Presence of the sequence TATA in the promoter
08
PYQ 2021
medium
biotechnology ID: iit-jam-
The lack of linear correlation between the genome sizes and genetic complexities among various species is known as
1
C-value paradox
2
Genetic diversity
3
G-value paradox
4
Central dogma
09
PYQ 2021
medium
biotechnology ID: iit-jam-
Which one of the following features/properties does glucose acquire through intramolecular hemiacetal formation?
1
Ability to function as a reducing agent
2
An additional chiral carbon
3
Ability to form anhydride linkage with non-carbohydrate moieties such as the inorganic phosphate
4
Ability to form epimers
10
PYQ 2021
medium
biotechnology ID: iit-jam-
A double helical DNA molecule is composed of 32 mol% of adenosine. The mol% of cytosine in this DNA molecule is ______.
11
PYQ 2021
medium
biotechnology ID: iit-jam-
The number of polypeptide chains in a core nucleosome is ______.
12
PYQ 2021
medium
biotechnology ID: iit-jam-
While performing a PCR, the student forgot to add one of the two primers. The number of single-stranded DNA molecules produced after 25 PCR cycles is ______.
13
PYQ 2021
medium
biotechnology ID: iit-jam-
The number of triplet codon(s) for methionine is _______.
14
PYQ 2021
medium
biotechnology ID: iit-jam-
Which of the following is/are involved in the initiation of DNA replication?
1
RhoA
2
oriC
3
Sigma factor
4
DnaA