Why do the toxic insecticidal proteins secreted by Bacillus thuringiensis kill the insect and not the bacteria itself?
Asked by Topperlearning User | 10th Jun, 2014, 04:38: PM
The Bt toxin protein exists as inactive protoxin. Once an insect ingests the inactive toxin, it is converted into an active form of the toxin due to the alkaline pH of the gut which solubilises the crystals. Therefore, it does not kill the bacteria.
Answered by | 10th Jun, 2014, 06:38: PM
- multiple answers correct question
- An analysis of chromosomal DNA using the Southern hybridization technique does not use which of the following? Autoradiography or PCR?
- Why is the gene encoding for Cry protein inserted into a crop plant?
- How can bacterial DNA be released from the bacterial cell for biotechnology experiments?
- Mention the source organism of the gene cryIAc and its target pest.
- Write two uses of PCR technique in molecular diagnosis.
- How do interferons protect us?
- (i) Give the scientific name of the soil bacterium which produces crystal (Cry) proteins. (ii) How are these proteins useful in agriculture? (iii) What do the differently written terms 'Cry' and 'cry' represent respectively?
- What is chimeric DNA?
- List three molecular diagnostic techniques that help detect pathogens from suspected patients. Mention one advantage of these techniques over conventional methods.
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number