NEET Biology question

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

(A)Binds with epithelial cells of midgut of the insect pest ultimately killing it.Correct
(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: (A)

Solution

The activated Bt toxin binds to specific receptors on the midgut epithelial cells of the insect pest,

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Question ID VK-125846