Question

Bacillus thuringiensis forms protein crystals which contain insecticidal protein that

A. binds with epithelial cells of midgut of the insect pest ultimately killing it  
B. is coded by several genes including the gene cry
C. is activated by acid pH of the foregut of the insect pest
D. does not kill the carrier bacterium which is itself resistant to this toxin
Answer :   binds with epithelial cells of midgut of the insect pest ultimately killing it

Releted MCQ Question on
Zoology >> Biotechnology and its Applications

Releted Question 1

In RNAi, the genes are silenced using :

A. ds - DNA
B. ds - RNA
C. ss - DNA
D. ss - RNA
View Answer
Releted Question 2

Which of the following is true for Golden rice?

A. It is vitamin $$A$$ enriched, with a gene from daffodil
B. It is pest resistant, with a gene from Bacillus thuringiensis
C. It is drought tolerant, developed using Agrobacterium vector
D. It has yellow grains, because of a gene introduced from a primitive variety of rice
View Answer
Releted Question 3

What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm?

A. Body temperature
B. Moist surface of midgut
C. Alkaline pH of gut
D. Acidic pH of stomach
View Answer
Releted Question 4

The crops engineered for glyphosate are resistant/ tolerant to :

A. Bacteria
B. Insects
C. Herbicides
D. Fungi
View Answer

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Biotechnology and its Applications

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