Question

4 endonucleases and exonucleases are enzymes that can remove nucleotides from a polynucleotide chain. an endonuclease removes nucleotides while an exonuclease removes nucleotides

multiple choice

from the ends of the chain; internally

internally; from the ends of the chain

from the 5 end of the chain; from the 3 end of the chain

from the 3 end of the chain; from the 5 end of the chain

Explanation:

Endonucleases act on internal bonds of a polynucleotide chain to remove nucleotides internally. Exonucleases act on the ends of the polynucleotide chain to remove nucleotides from the ends.

Answer:

B. Internally; from the ends of the chain