AP BIOLOGY

Detailed explanation-1: -So, the correct answer is ‘The enzyme binds DNA at specific sites and cuts only one of the two strands’

Detailed explanation-2: -In the laboratory, restriction enzymes (or restriction endonucleases) are used to cut DNA into smaller fragments. The cuts are always made at specific nucleotide sequences. Different restriction enzymes recognise and cut different DNA sequences.

Detailed explanation-3: -Restriction endonuclease enzymes cut the DNA strands from within and at specific sites. These sites are known as recognition sequences.

Detailed explanation-4: -Which statement best describes restriction enzymes? They are important for cloning applications because they can be used to cut DNA at specific nucleotide sequences.