Answer:
Simple epithelium is a single layer of cells with every cell in direct contact with the basement membrane that separates it from the underlying connective tissue. In general, it is found where absorption and filtration occur. The thinness of the epithelial barrier facilitates these processes.
E. On the inside of the folded chain, away from water.
Absorbed into the blood by the mature enterocytes on the upper third of the intestinal villi
The ATP molecule act as a power source for a cell. it is someone's compared to a battery.
