NEET UG 2019 · Zoology · Question 174
NEET 2019 Zoology, question 174
Question 174 of the NEET 2019 paper (code P1) is a Zoology question from Biotechnology and its Applications. Its idea, Alkaline pH Activation, was asked twice, in 2019 and 2026, across NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q174 · Zoology
What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm ?
- 1Body temperature
- 2Moist surface of midgut
- 3Alkaline pH of gutOfficial answer
- 4Acidic pH of stomach
Official answer: option 3 · NTA final answer key
Same idea
Alkaline pH Activation, in other papers
NEET asked this idea twice, in 2019 and 2026. The other question below.
- 2026 Q137The inactive form of Bt toxin is converted to the active form in the insect gut __________.One-line MCQ · Easy
Alkaline pH Activation: every question and how it was framed
The chapter
Biotechnology and its Applications in ten years of NEET
24 questions from 2017–2026, asked in 9 of 10 papers, about 2.3 a paper. Transgenic Plants alone had 12.