Question

which macromolecule provides structural support in plant cell walls? * a) lipid b) protein c) cellulose d) rna

Explanation:

• Lipids (option A) are for energy storage/ cell membranes, not plant cell wall structure.
• Proteins (option B) have roles like enzymes/transport, not primary cell wall support.
• Cellulose (option C) is a polysaccharide forming plant cell walls, providing rigidity and structural support.
• RNA (option D) is involved in genetic expression, not cell wall structure.

Answer:

C) Cellulose