The way the yeast takes in the food for yeast?
Sorry if I'm wrong! I don't really know biology. I just wanted to try to help.
Cellulose is a straight chain polysaccharide which is made up of glucose molecules that are joined together by beta 1,4 glycosidic bonds. Cellulose is the principal structural material of plants and plants use it to build strong structures. For instances, the rigid cell wall of plant cells is made up of cellulose.
Thus, the correct option is D.
Every plant organ is adapted to its function. For example, leaves that are big and flat absorb plenty of sunlight for photosynthesis. Long roots keep a tree stable and take water from deep in the soil. Some plants have unusual adaptations.
Fam stop asking questions and learn from google