FILL IN THE BLANK

14 : Both starch and glycogen are forms of ———
15: Describe the structure of a lipid . It has a ——— head and a ———— tail
16: list and describe the levels of protein structure .
A .
B.
C.
D.
17: Animals store glucose as ——— plants as ———
18: enzymes lower the ——————— for a reaction .
19: what is the function of the “R group “ in a protein ?