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July 21st, 2016, 04:35 PM
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Join Date: Mar 2013
Re: ARS NET Model Question Paper

The sample questions which form part of the question paper for the ARS NET examination required for preparation are as follows:

Endochitinase can be used as an

a) Antibacterial
b) Antiviral
c) Antifungal
d) Antinematodal

The direct DNA uptake by the protoplast is stimulated by the chemical

a) Cellulose
b) Sucrose
c) PEG
d) Mannose

Which of the following is an herbicide resistant gene?

a) Bar
b) Hpt
c) Chitinase
d) oxidase

Restriction enzymes that cuts straight across the DNA produces

a) Nick
b) Sticky ends
c) Blunt ends
d) None of these

Lambda has short single stranded 5’ projection of

a) 8 nucleotide length
b) 10 nucleotide length
c) 12 nucleotide length
d) 14 nucleotide length

In Agrobacterium mediated plant transformation which one of the following is used to check the Agrobacterium growth

a) PPT
b) Kanamycin
c) Timentin
d) Pencillin

The T-DNA region of all the Ti and Ri plasmids are flanked by direct repeat sequence

a) 15bp
b) 20 bp
c) 25 bp
d) 35 bp


During Agrobacterium infections the plant cell begins to synthesise an Arginine derivative called as

a) Hygromycin
b) Opines
c) Acetobenzylpurine
d) Acetosyringone

During Agrobacterium transformation the T-DNA is coated by protein, which is the product of gene

a) Vir B
b) Vir C
c) Vir D
d) Vir E

Most commonly used strategy to develop transgenic plant against any viral disease is to engineer a

a) Anti sense RNA for viral genome
b) Coat or capsid protein gene
c) Direct DNA transfer to viral gene
d) Liposome Mediated transfer of viral RNA

The vir region is organised into six operons viz., vir A, vir B, vir C, vir D, vir E, vir G out of these which four operons are required for virulence

a) A,B,C,D
b) B,C,D,E
c) C,D,E,G
d) A,B,D,G

Replication of DNA by rolling circle mechanism give rise to a

a) Blunt end DNA
b) Theta structure
c) Concatamer
d) Single strand DNA with nick

The gene transferred from E.coli to tobacco to increase the level of manitol is

a) Manitol dehydrogenase
b) Manitol carboxylase
c) Manitol oxygenase
d) Manitol hydrolase


Relaxed plasmid

a) Have only single copy per cell
b) Cannot be purified
c) Does not exist in bacteria
d) Have multiple copies per cell

Which of the following is a green tissue specific promoter?

a) Pea vicilin
b) Arabidopsis small subunit of RUBISCO
c) 35s CaMV
d) Bean phytahemaglutinin

In vitro packaging is required for which one of the following vector

a) BAC
b) YAC
c) PAC
d) None of these

Cosmids have the Cos site of

a) Lambda
b) Plasmid
c) ML3
d) YAC

Thiobacillus thioxidans grows on

a) Irron
b)Sulphur
c) Aluminium
d) Pyrites

An example of commercially important primary metabolites is

a) Toxin
b) Alkaloid
c) Amine
d) Alcohol

Secondary metabolites like antibiotics are not essential for

a) Log phase growth
b) Exponential growth
c) Both a and b
d) none of these


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