Question

1. the structure labelled x is composed mostly of

a. glycogen and protein.
b. nucleic acid and glycogen.
c. protein and phospholipids.
d. nucleic acid and phospholipids.

Explanation:

Step1: Identify the structure X

Structure X is the cell membrane.

Step2: Recall the composition of the cell membrane

The cell membrane is composed of a phospholipid bilayer and proteins.

Answer:

C. protein and phospholipids.