Eukaryotic and prokaryotic cells

The two major groups of cells that make up organisms

Sizes of cells

How to calculate how small a cell is

Orders of magnitude

Compare the size of a dog with the size of a bacteria

Animal cells and plant cells

Compare animal cells and plant cells

Diffusion

The movement of particles in and out of a cell

Surface area to volume ratio

See how size matters to a cell

Osmosis

The movement of water in and out of a cell

Active transport

Moving molecules with energy