All living things are made of cells.
Animal cells have lots of parts. Plant cells have all of these parts, plus a few extra that animal cells do not have.
Parts of an Animal Cell
- Nucleus - Contains genetic material that controls the activities of the cell.
- Mitochondria - These are where most of the reactions for respiration take place. Respiration releases energy that cells need to work.
- Cytoplasm - Gel-like substance where most of the chemical reactions happen. It contains enzymes that control the reactions.
- Ribosomes - There are where proteins are made in the cell.
- Cell Membrane - Holds the cell together and controls what goes in or out.
Parts of a Plant Cell
A plant cell features all of the parts found in an animal cell as well as:
- Chloroplasts - These are where photosynthesis occurs, which makes food for the plant. They contain a green substance called chlorophyll.
- Rigid Cell Wall - Made of cellulose. It supports the cell and strengthens it.
- Permanent Vacuole - Contains cell sap, a week solution of sugar and salts.
Yeast is a microorganism. A yeast cell has a nucleus, cytoplasm, and a cell membrane surrounded by a cell wall.
Bacteria are also single-celled microorganisms. A bacteria cell has a cytoplasm and a cell membrane surrounded by a cell wall. The genetic material floats in the cytoplasm because bacterial cells don't have a nucleus.