Macromolecule Function Groups

Question 1

O 
        ||
- O- P- O(-)
         |
        O

Answer 1

Phosphate group

Question 2

-OH

Answer 2

Hydroxyl group

Question 3

H
       /
   -N
       \
        H

Answer 3

Amino group

Question 4

O 
   //
-C
   \
    OH

Answer 4

Carboxyl group