Question

A bacterium Bacillus thuringiensis produces a toxic protein named .cry

protein. that is lethal to certain insects but not to bacterium


(b) What type of changes occur in the gut of insects on consuming this

protein?​

Answer 1

Answer:

Cry proteins are encoded by cry genes. These proteins are toxins, which are produced by. This bacterium contains these proteins in their inactive from. So the protein does not kill bacteria.

Cry protein is a toxic crystal protein encoded by cry gene which is toxic to certain insects. It is produced by Bacillus thuringiensis bacteria in an inactive form. Activation of cry protein takes when ingested by insects, due to the alkaline ph of guts. Epithelial cells of the gut are lysed which leads to the death of insects. Humans are taking advantage by incorporating BT toxin gene in crops to form transgenic crops which are insect resistant e.g., BT cotton.

Explanation:

Answer 2

Answer:

$\huge \underbrace \mathfrak{ \red{ans}wer}$

Cry proteins are encoded by cry genes. These proteins are toxins, which are produced by. This bacterium contains these proteins in their inactive from. So the protein does not kill bacteria.

Hope I help you❤!!