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Biotechnology and Its Applications
Question
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Why insulin is being extracted from bacteria rather than animal source ?

Or

Name the source from whice insulin was extracted earlier.

Answer

 Insulin is  extracted from bacteria because bacteria is easy to manipulate and easy to grow. Insulin extracted from other organism caused allergies due to the presence of foreign gene. Since human gene can be linked to bacterial gene the insulin produced by it does not cause infection.

Insulin was earlier extracted from pancreas of slaughtered cows and pigs 

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Some More Questions From Biotechnology and Its Applications Chapter

Name two diseases that can be treated by producing biological compound in transgenic animal.

Name the first transgenic cow.

Name the toxin produced by Bacillus thuringiensis.

What is the utility of Bt-Toxin gene ?

Bt-toxin protein exist in which form ?

How is inactive Bt-toxin converted into active form ?

How Bt toxin causes death of insect ?

Name a few forms of cry gene.

List the specific insects killed by (i) cryIAc and (ii) cryIAb.

Name the insect killed by proteins coded by cryIIAb and cry IAc.