M.Sc. (Semester II) (CBCS) Examination Oct/Nov-2017
Botany
CELL AND MOLECULAR BIOLOGY OF PLANTS
Day Date: Wednesday, 22-11-2017 Max Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: Attempt totally five questions.
Question no.1 is compulsory.
Attempt any two questions from question no.2 to 4
Attempt any two questions from question no.5 to 7
Figures to the right indicate full marks.
Q.1 Choose the correct answer from the given alternatives:- 14
proteins are responsible for transport of substances across
the membrane against the concentrating gradient.
Enzymes Structural
Carrier Storage
The lipids of the cell membrane contain head and hydrophobic
tails.
Hydrophilic
Hydrophobic
No
Both Hydrophobic and Hydrophilic
The unit membrane model was put forwarded by
Robertson (1953) Mudd and Mudd (1931)
Havery and Cole Danielli Davson (1954)
In transport, molecules moves from regions of low concentration
to regions of high concentration i.e. against the concentration gradient.
Passive Diffusion
Active Effusion
Baker (1953) referred to the golgi apparatus as
Mitochondria Chloroplast
Lipochondria Camillo golgi
The endoplasmic reticulum is found in almost all animal and plant cells
except
Oocyte Mature erythrocytes
Procytes Meiocytes
Filaments and microtubules are found in all cell.
Eukaryotic Prokaryotic
Bacterial Protozones
In the chromosome, DNA is looped around the histone beads to form
Liposomes Nucleosomes
Plastosomes Histosomes
Page 2 of 2
SLR-MD-130
DNA replication is a process in which each of the two double helices
formed from the parent double strand have one old and one new strand.
Non conservative Conservative
Preservative Semi conservative
10) DNA consist of short identical genes repeated in tandem
several hundred times.
Satellite Palindromic
form of form of
11) The cells which are not dividing are likely to be at
G1 phase G2 phase
G0 phase S phase
12) Crossing over results in
Recombination of linked alleles. Dominance of alleles
Segregations of alleles Linkage between genes
13) Inactivation of is one of the steps leading to the development
of cancer.
Tumor suppressor genes Oncogenes
Growth factors Stems cells
14) Chromosome mapping is done by using
GISH FISH
GISH and FISH None of these
Q.2 Describe the short various models of plasma membrane. 07
Describe the characteristics and function of vacuoles. 07
Q.3 Describe the function of plasma membrane. 07
Comment upon the genome organization in mitochondria. 07
Q.4 Describe the role of plasmodesmata in the movement of molecules. 07
Explain gene expression and nucleochloroplastic interaction in chloroplast. 07
Q.5 Write briefly
Nucleosomes 05
Programmed cell death 05
Enzymes in DNA repair. 04
Q.6 Describes
FISH technique. 05
Properties of genetic code. 05
Cyclins. 04
Q.7 Writes notes on any three: 14
Satellite DNA
Rertinoblastoma
Wobble hyphothesis
ELISA Technique