OnlineCBT Logo OnlineCBT
⚲
हिन्दी
OnlineCBT Logo OnlineCBT
⚲

Biology · PYQ NEET UG 2019(1)

हिन्दी

What triggers activation of protoxin to active Bt toxin of the Bacillus thuringiensis in boll worm?

  1. A
    Alkaline pH of gut
  2. B
    Acidic pH of stomach
  3. C
    Body temperature
  4. D
    Moist surface of midgut

Correct answer · Option A

Alkaline pH of gut

Explanation

The inactive protoxin crystals dissolve in the alkaline pH of the insect's gut, which is converted to active toxin by gut proteases.

Related questions

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to:→Which one of the following is NOT a method of in situ conservation of biodiversity?→What map unit (Centimorgan) is adopted in the construction of genetic maps?→Consider the following statements: i. Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group. ii. A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme. Select the correct option.→
OnlineCBT

Our mission is "To educate students and help them excel in competitive exam preparation to the best of their potential. To impart good values in students and develop their overall exam readiness."

Useful Link
Important Pages
Courses & Practice
Contact
Address

Plot No 10, Dholigumti, Panditpura Road, Bandikui, Dausa(Raj) 303313

Contact

+91 7877547686

 E-mail

onlinecbtportal@gmail.com

 Helpline Number

+91 7877547686
Share
Click To Download
Get it on Google Play

ऐप डाउनलोड करने
के लिए Google Play पर
उपलब्ध है

Terms of Use | Privacy Policy | Cookie Policy | Disclaimer | Editorial Policy | Fact Check | Corrections | DMCA | Ad Choices

Copyright © 2026 - OnlineCBT.in. All Rights Reserved.

WhatsApp Chat