Agricultural Biotechnology MCQs

Question 1

DNA replication takes place in

Accepted Answer

5'-3' direction in leading and lagging strand

Answer

5'-3' direction in leading strand and 3'-5'direction in lagging strand

Answer

5'-3' direction in lagging strand and 3'-5'direction in leading strand

Answer

None of the above

Question 2

Which bond in the DNA provides it the backbone?

Accepted Answer

Phosphodiester bond

Answer

Glycosidic bond

Answer

H-bond

Answer

Peptide bond

Question 3

Cryopreservation refers to germplasm protection by

Accepted Answer

Low temperature treatmant

Answer

Reducing in moisture

Answer

Tissue culture

Answer

Breeding with wild varieties

Question 4

The fundamental unit of tertiary structure is

Accepted Answer

Domain

Answer

Motif

Answer

Helix

Answer

All of the above

Question 5

For distant hybridization the technique used to culture the embryo is

Accepted Answer

Embryo rescue

Answer

Ovule culture

Answer

Anther culture

Answer

None of the above

Question 6

Azotobacter and Bacillus polymyxa are

Accepted Answer

Non-symbiotic nitrogen fixers

Answer

Decomposers

Answer

Symbiotic nitrogen fixers

Answer

Pathogenic bacteria

Question 7

The name 'magic' bullets refers to

Accepted Answer

Monoclonal antibodies

Answer

Antibiotics

Answer

Vaccines

Answer

Interferons

Question 8

More Auxin : less cytokinin

Accepted Answer

Promotes root

Answer

Promotes callus

Answer

Promotes shoot

Answer

Promotes embryo

Question 9

During DNA isolation which chemical is used for breaking of plasmamembrane

Accepted Answer

CTAB/SDS

Answer

Phenol

Answer

Isopropanol

Answer

Ethylene