......Suprabhat........
Answer the attachment........
Don't spam......
Answers
(I) Why this toxic does not kill the bacteria ??
Bt products are found to be safe for use in the environment and with mammals. The EPA (environmental protection agency) has not found any human health hazards related to using Bt. In fact the EPA has found Btsafe enough that it has exempted Btfrom food residue tolerances, groundwater restrictions, endangered species labeling and special review requirements. Bt is often used near lakes, rivers and dwellings, and has no known effect on wildlife such as mammals, birds, and fish.
Humans exposed orally to 1000 mg/day for 3-5 days of Bt have showed no ill effects. Many tests have been conducted on test animals using different types of exposures. The results of the tests showed that the use of Btcauses few if any negative effects.Bt does not persist in the digestive systems of mammals.
(ii) What type of change occurs in the gut of insects on consuming this protein ?
Refer Pic
(iii)How many has exploited this protein for this benefit ??
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.
Im so sorry if my answer is wrong
actually you got more than genius rank write so, can you able to change my username
if it is possible only