Advertisements
Advertisements
Question
Why does Bt toxin not kill the bacterium that produces it, but kill the insect that ingests it?
Solution
Bt toxin is produced by a soil bacterium called Bacillus thuringiensis. This toxin does not kill the bacteria because when it is present in the bacteria, it is in an inactive and crystalline form.
It becomes active and toxic when it is consumed by insects such as such as lepidopterans (armyworm), coleopterans (beetles) and dipterans (flies/ mosquitoes).
The activated toxin (delta endotoxins) binds to the epithelial cells in the midgut of an insect and creates pores that cause lyses and swelling, eventually killing the insect.
APPEARS IN
RELATED QUESTIONS
Why do children cured by enzyme-replacement therapy adenosine deaminase deficiency need periodic treatment?
Compare and contrast the advantages of production of genetically modified crops.
State the best-known contribution of P.K. Sethi
What is genetically engineered Insulin?
A pathophysiology is the ______.
Due to which of the following reasons insulin extracted from pancreas of slaughtered animals cannot be used in humans to treat diabetes?
How is a mature, functional insulin hormone different from its prohormone form?
Name the five key tools for accomplishing the tasks of recombinant DNA technology. Also mention the functions of each tool.
Eli Lilly's contribution for diabetic patients through r-DNA technology has been overwhelmingly accepted. Explain how?
Give a reason for the following:
Streptokinase is administered to the patients having myocardial infarction.
