M. Sc. (Biotechnology) (Semester (CBCS) Examination, 2017
MOLECULAR CELL PROCESSING wateriI
Day Date: Monday, 24-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
N.B. 1)section-I is compulsory.
From section II attempt any four.
All questions carry equal marks.
Figures to the right indicate full marks.
Draw neat and labeled diagram.
Section-I
Q.1 Rewrite the following sentence by choosing the correct
answer.
07
statements is true of DNA damage.
Most DNA damage is repaired by the cell
All DNA damage results in diseases such as cancer
All DNA damage is caused by physical agents
Most DNA damage is advantageous to the cell
RNA primer necessary for replication
The RNA primer is necessary for the activity of DNA ligase.
The RNA primer create the and ends of the stand.
DNA polymerase can only add nucleotides to RNA
molecules.
DNA polymerase can only add nucleotides to an existing
strand.
The common demonization occurs during DNA

Thymine dimer Adenine dimer
Guanine dimer None
During the process of transcription, of the following
is produces.
H2O ATP mRNA DNA
DNA repair mechanism is absent in
Nuclear genome Mitochondrial genome
Chloroplast genome Both b c
The peptide chin grows on site
A P E Both a b
Page 1 of 2
Transcription termination occurs by
Rho-dependent Rho-independent
Sigma factor Both a b
Define the following terms: 07
Topoisomer
Activators
SOS repair
50 S ribosome
RNA polymerase
Nitrosylation
Arthur Kornberg enzyme
Section-II
Answer any four of the following:
Q.2 Write a note on base excision and recombination repair with nest
labeled diagram.
14
Q.3 Write a note on different types of intron splicing and add a note on
spliceosome.
14
Q4 Describe the structure, assembly and function of each subunit of DNA
pol III with neat Labeled diagram.
14
Q5 What is oriC? Explain the eukaryotic DNA replication with neat labeled
diagram.
14
Q.6 Answer any two of the following: 14
Write a note on different types RNA molecules.
Explain the recombination process
Write a note on post transcription modification of eukaryotic mRNA.
Q.7 Write short notes on (any 14
Prokaryotic gene structure
Eukaryotic ribosome subunits
Translation initiation factors