M.Sc. (Semester (CBCS) Examination Oct/Nov-2017
Genetics
CELLULAR AND MOLECULAR BIOLOGY
Day Date: Thursday, 23-11-2017 Max. Marks: 70
Time: 10.30 AM to 1.00 PM
Instructions: Section-I is compulsory.
From Section-II attempt any four.
Figures to right indicate full marks.
Draw neat and labeled diagrams.
Section-I
Q.1 Rewrite the following sentences by using correct alternatives: 07
The initiation of DNA synthesis in prokaryotes commences through
use of small RNA molecules which are synthesized
RNA polymerase Primase
DNA polymerase Ligase
are the group of glycoprotenis that mediate
dependent cell cell adhesion.
Selectin Cadherin
Intergrin Immunoglobulins
RNA dependent DNA polymerase are also known
RNA Polymerase Reverse transcriptase
Topoisomerase DNA polymerase
Clover leaf model belongs to
tRNA snRNA
rRNA mRNA
The surrounds the cell like belt, preventing the passage
of substances between the cells
Gap junction Desmosome
Hemi desmosome Tight junction
Fluid mosaic model of cell membrane was put forward
Daniel Davson Singer Nicolson
Garner Allard Watson Crick
The genetic code translates the language
RNA into DNA DNA into RNA
RNA into proteins DNA into proteins.
Answer the following terms. 07
Antisense RNA.
SSBPs.
Codon usage.
Gap junction.
Transcripition.
Diffusion.
M phase in cell cycle.
Page 2 of 2
SLR-MK-421
Section-II
Attempt any four:
Q.2 Write an essay on DNA replication in prokaryotes. 14
Q.3 Describe in detail WNT signaling pathway. 14
Q.4 Explain chemical composition of plasma membrane. Add a note on fluid mosaic
model.
14
Q.5 Answer any two of the following: 14
Describe the structure and function of endoplasmic reticulum.
Explain initiation of translation in prokaryotes.
Explain properties of genetic code.
Q.6 Answer any two of the following: 14
Vesicular transport of protein from ER to Golgi.
Transcription.
Cell cycle phases.