Bacillus thuringiensis forms a protein which | vedclass

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Question

(A) Bacillus thuringiensis $(Bt)$ produces insecticidal crystal proteins (Cry proteins) during a particular phase of their growth. These proteins exis

Vedclass · Accepted Answer

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

Vedclass · Answer

(A) Bacillus thuringiensis $(Bt)$ produces insecticidal crystal proteins (Cry proteins) during a particular phase of their growth. These proteins exist as inactive protoxins in the bacterium. When an insect ingests the inactive toxin,it is converted into an active form due to the alkaline $pH$ of the gut,which solubilizes the crystals. The activated toxin binds to the surface of midgut epithelial cells and creates pores that cause cell swelling and lysis,eventually leading to the death of the insect. Therefore,option $A$ is correct.

Bacillus thuringiensis forms a protein which is insecticidal. This protein:

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