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Biotechnology and Its Applications
Question
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Restriction enzymes are used in genetic engineering, because they

  • can degrade harmful proteins

  • can join different DNA fragments

  • can cut DNA at specific base sequence

  • are nucleases that cut DNA at variable sites

Answer

C.

can cut DNA at specific base sequence

Restriction enzyme are also known as molecular knifes or molecular scissors. They are isolated from bacteria. They recognize specific base sequence in DNA and cleave both strands of it.

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Some More Questions From Biotechnology and Its Applications Chapter

Write two applications of biotechnology.

What are probes ?

What are transgenic animals ?

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 ?