Cells

Another word for a living thing is an organism.

Only Animal Cells Have:

Mitochondria: Tiny parts of a cell where aerobic respiration happens. They release energy for the cell.

Only Plant Cells Have:

Cell wall: A rigid layer made of cellulose that supports the cell.

Vacuole: A structure filled with cell sap, a weak solution of sugars and salts.

Chloroplasts: Contain chlorophyll, which is used for photosynthesis to make food for the plant.

Both Have:

Nucleus: Controls what the cell does.

Cytoplasm: A jelly-like substance, where most chemical reactions happen.

Cell membrane: A thin layer, which holds the cell together and controls what goes in and out.

Plants and animals are made up of many cells, so they are multicellular organisms.

Many living things are made up of one cell and are called unicellular organisms. Unicellular organisms have adaptations that help them survive in their environment.

Diffusion: The movement of substances from an area of high concentration to an area of low concentration.

Cells and diffusion: Cells use diffusion to take in glucose and oxygen and remove waste products like carbon dioxide.