Question

166. What triggers activation of protoxin to active Bt
toxin of Bacillus thuringiensis in boll worm ?
(1) Body temperature
12 Moist surface of midgut
Alkaline pH of gut
(4) Acidic pH of stomach
(3)
​

Answer 1

Hi Dude

It is neet 2019 question yesterday given

The answer is alakaline pH of gut.

Hope answers the question

Follow me for more answers

Answer 2

Alkaline pH of gut initiates ctivation of protoxin to “Bttoxin of Bacillus thuringiensis in boll worm”.

Answer: Option 3

Explanation:

Bacillus thuringuensis forms protein crystals in their growth period. This crystal contains a insecticidal protein which is toxic in nature. This protein is present as a protoxin in inactive form but when the insect eat the inactive protoxin then it turns to the toxin in the presence of the alkaline pH of the gut. The toxin will bind with the epithelial cells of the midgut and create pores.