1. Cells Vocabulary

2. cell  smallest unit of life

3. cell membrane  the outer covering that protects all cells

4. cytoplasm  the gelatin-like material inside every cell

5. prokaryotic  a type of cell that has no membrane- bound structures or nucleus

6. cell wall  protects the cells of plants, algae, fungi, and most bacteria but is not found in animal cells

7. cytoskeleton  scaffolding-like structure in cytoplasm which helps keep its shape

8. eukaryotic  a type of cell that has membrane-bound structures and organelles

9. nucleus  directs all activities of cells and includes DNA

10. chloroplasts  green organelles in the cytoplasm of plant cells

11. mitochondria  organelles which release energy stored in food that cells need; known as the “powerhouse of the cell”

12. ribosomes  make proteins for cell acitivities

13. endoplasmic reticulum  a series of rough or smooth membranes that move materials around in a cell

14. Golgi bodies  organelles that move substances out of the cell or to other parts of the cell

15. vacuoles  membrane-bound temporary storage spaces; plant cells have a central vacuole

16. lysosomes  recycling organelles that break down food molecules and cell wastes

17. tissue  group of similar cells that work together to do one job

18. organ  different types of tissues working together

19. organ system  a group of organs working together on a particular function

20. organism  organ systems work together to form the entire organism