Animals, plants, fungi and bacteria use carbohydrates in varying ways. For plants, carbohydrates form a large part of their structure in the form of cellulose. Animals use carbohydrates primarily for energy, such as starch, glucose and other sugars. Bacteria use carbohydrates for both structure and energy.
C preserved bone because none of the others were enough
Im going to have to go with C. they pass through channels in the cell membrane
The answer for this question is b Oswald Avery