Biology Biotechnology and Its Application All Topic Question For Revision Test Single Correct MCQ
Published on: August 13, 2026

The Bt is not toxic to human beings and bacteria Bacillus thuringinensis because -

A
The pro Bt toxin activation requires temperature above human body temperature
B
The Bt toxin recognized only insect-specific targets
C
The pro Bt toxin activation requires pH lower than that present in this bacteria
D
Conversion of pro Bt toxin to Bt toxin takes place in highly alkaline conditions

Share this question

For Instagram sharing, use “Apps” on mobile or copy the link.

Text Solution

Verified by Experts
The correct answer is:
D

Bt toxin is produced as an inactive protoxin (pro-Bt toxin). It becomes active only in the highly alkaline gut of susceptible insects. Humans and Bacillus thuringiensis do not provide these conditions, so the toxin is not activated and is therefore non-toxic to them.

──────────────────────────────────────────────────────────────────────────────────────────

Prepare Smarter with CGP Edu

Get practice questions, solutions, and test series in one place.

Write a Review

Share your experience with this question and solution.

Commentary

Send your comment, doubt, correction, or feedback to admin.

Student Reviews

What students say about this solution

No reviews yet. Be the first to write a review.

Similar Questions

Explore conceptually related problems

CG
CGP Question Assistant Question Bank + AI Help
Hi! Type your question or upload one screenshot. First I will search related questions from CGP Edu Question Bank. If none match, type YES and I will solve it with AI.
Upload only one screenshot at a time. Flow: Question Bank first → If not matched, type YES for AI solution.