Question No:1

The following crops are now genetically modified by Bt-toxin gene
(A) Cotton
(B) Corn
(C) Rice
(D) Tomato
(E) Potato
(F) Soyabean

[A] A, Band C only
[B] D and E only
[C] A and F only
[D] All



Question No:2

During electrophoresis, DNA fragments move towards the

[A] Anode
[B] Cathode
[C] Both the poles
[D] None of these



Question No:3

Some strains of Bacullus thuringiensis produce proteins that kill certain insects like

[A] Lepidopterans
[B] Coleopterans
[C] Dipterans
[D] All of these



Question No:4

Humulin was first marketed by

[A] Eli Lily
[B] Sun pharma
[C] Nova Industry
[D] May and Baker



Question No:5

Select correct matching.

[A] Lepidopterans—- Tobacco bud worm, armyworm
[B] Coleopterans—- Beetles and bud worm
[C] Dipterans—- Flies, Mosquitoes, Spiders
[D] Aves —–Lady bird, Humming bird



Question No:6

Antisense transcription is like carrying genes as much as

[A] On sense strand of DNA
[B] Antisense strand of DNA
[C] On genetic RNA
[D] Ont-RNA



Question No:7

Bt-toxin is insecticidal because

[A] activated toxin binds to the surface of midgut epithelial cells and creates pores that causes swelling and lysis and eventually cause death of the insect.
[B] it decreases the growth of the nervous system of the insect.
[C] it makes insect unable to fly
[D] it kills insect by affecting its blood flow



Question No:8

DNA probe is used in

[A] Gel electrophoresis
[B] Western blot
[C] DNA profiling technique
[D] Interferon synthesis



Question No:9

Bt-crops are not affected by Bt-toxin because

[A] Toxin exist as inactive protoxin
[B] It has special antibodies against toxin
[C] Its intracellular medium is alkaline so toxin remain inactive
[D] All of the above



Question No:10

During DNA fingerprinting, DNA probes helps in

[A] Gel electrophoresis
[B] Southern blotting
[C] Autoradiography
[D] None of the above



Question No:11

Select the correct statement.

[A] Most Bt-toxins are insect group non-specific
[B] Bt-toxin gene is coded with the name ‘CRY’
[C] Genes cry I Ac and cry II Ab form protein that control cotton bollworms
[D] CRY I Ab gene forms protein that control corn borer



Question No:12

Transfer of r-DNA through phage is done by

[A] Diffusion
[B] Transformation
[C] Transduction
[D] Conjugation



Question No:13

The following are all genes except

[A] cry I Ac
[B] cry l Ab
[C] ROP
[D] Sail



Question No:14

Hepatitis-B vaccine is a

[A] First generation vaccine
[B] Third generation vaccine
[C] Product of biotechnology
[D] Both (b) and (c)



Question No:15

Protein encoded gene cry I Ab controls

[A] Cotton bollworm
[B] Beetles
[C] Corn borer
[D] Flies