Question

What are restriction enzymes?

Answer 1

Restriction enzymes:

1. The proteins produced by bacteria that cleave or break the DNA at a specific site are known as restriction enzymes.
2. This site is known as the restriction site.
3. Restriction enzyme produces DNA fragments with a known sequence at each end.
4. Restriction enzymes are also known as molecular scissors.
5. Restriction enzymes are of four types: Type I restriction enzymes, Type II restriction enzymes, Type III restriction enzymes, and Type IV restriction enzymes.
6. This site is known as the restriction site.
7. The restriction enzymes protect the live bacteria from bacteriophages.
8. They recognize and cleave at the restriction sites of the bacteriophage and destroy its DNA.
9. Restriction enzymes are important tools for genetic engineering.
10. They can be isolated from the bacteria and used in laboratories.