Question

what molecule makes up plant cell walls?
a. dna
b. starch
c. glycogen
d. cellulose

Explanation:

To determine the molecule that makes up plant cell walls, we analyze each option:

• Option A: DNA is the genetic material, not a component of plant cell walls.
• Option B: Starch is a storage polysaccharide in plants, not part of the cell wall.
• Option C: Glycogen is the storage polysaccharide in animals, not found in plant cell walls.
• Option D: Cellulose is a polysaccharide that forms the structural component of plant cell walls, providing rigidity and support.

Answer:

D. Cellulose