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Bacillus thuringiensis forms protein cry...

Bacillus thuringiensis forms protein crystals which contain insecticidal 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 insect pest ultimately killing it

C

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

D

Is coded by several 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 insectidical 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.

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