Answer: B.) To synthesize and isolate proteins for secretion or for use in the cell.
Explanation:
The R group should have the ability to form hydrogen bonds.
The R-group take a lot of different chemical forms and can
be acidic, basic, polar or non polar. Amino acids that are either acidic or basic
consequently have either positive or negative charge. These types of R-groups
are stabilized when surrounded by water.
The new nucleotides base-pair accurately with those on the complementary strand
Hope this helps
Have a good day
