Does the cell membrane break down sugar to release energy that an animal cell can use

no

Explanation:

the function of cell membrane is to act as a barrier between the cell's content and the outside of the cell

Glucose enters the cells and is transported to the mitochondria. Once in the mitochondria, the glucose is used as a product of cellular respiration. Cellular respiration is when glucose and oxygen are used to make water, carbon dioxide and a usable form of energy known as ATP (which stands for adenosine triphosphate).

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.