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Bacillus thuringiensis forms protein cry...

Bacillus thuringiensis forms protein crystals which contain insectidical protein. This protein

A

Is activated by acid pH of the foregut of the insect pest

B

Does not kill the carrier bacterium which is itself resistant to the toxin

C

Binds with epithelial cells of midgut of the insect pest ultimately killing it

D

Is coded by serveral genes including the gene cry

Text Solution

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The correct Answer is:
C
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Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein:

Bacillus thuringiensis forms crystals which contain insecticidal protein. This protein

Bacillus thuringiensis forms the protein crystals, which contains a toxic insecticidal protein. This proein I. is activated by alkaline pH of the gut of the insect pest. II.binds with the epithelial cells of the midgut of the insect pest ultimately killing it. III.does not kill the carrier bacterium which is itself resistance to this toxin. Which of the statement given above are correct ?

Bacillus thuringiensis produce a protein that kills

A : Bt toxin are protein crystals containing insecticidal protein R : B. thuringiensis forms these protein crystals throughout continuously during their growth period.

B. thuringiensis forms protein crystals during a particular phase of their growth. The toxin is coded by a gene named cry. There are a number of them. Which is not an example of such plants ?

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