Question

Restriction endonucleases are enzymes which
(a) make cuts at specific positions within the
DNA molecule
(b) recognize a specific nucleotide sequence
for binding of DNA ligase
(c) restrict the action of the enzyme DNA polymerase
(d) remove nucleotides from the ends of the
DNA molecule

Answer 1

Explanation:

restriction enzyme, restriction endonuclease, or restrictase is an enzyme that cleaves DNA into fragments at or near specific recognition sites within molecules known as restriction sites. ...

These enzymes are found in bacteria and archaea and provide a defence mechanism against invading viruses.