Cell Membrane Whether you are a single cell or a blue whale with trillions of cells, you are still made of cells. All cells are contained by a cell membrane.
Cellulose Cell Wall Cell membranes surround every cell you will study. Cell walls made of cellulose are only found around plant cells and a few other organisms.
Mitochondrion Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell.
Permanent Vacuole Plant cells also have a cell wall, and often have chloroplasts and a permanent vacuole. Water passes into and out of cells by osmosis.