*Cells CW 1

2. series of chemical reactions that convert energy in food molecules into ATP
6. a network of passageways in which chemical compounds are manufactured, processed, and transported.
13. a cell structure that performs a specific function.
14. a round body in the center of the cell that contains DNA and regulates gene expression.
15. a tiny structure where proteins are synthesized
16. a double-layered membrane that surrounds the cell. Also called the plasma membrane, it regulates what enters and leaves the cell.
17. an organelle that converts the radiant energy of the Sun into chemical energy through the process of photosynthesis.
18. a hair-like structure that helps bacterial cells adhere to surfaces. Some pili are able to transfer genetic material to other cells.

1. a type of vesicle that stores water, nutrients, and other chemicals. The large vacuole found in plant cells helps the cells maintain their shape.
3. the rigid, porous outer layer of a plant cell.
4. a small body in the nucleus where ribosomes are synthesized.
5. an organelle that uses oxygen to convert nutrients into energy that can be used by the cell.
7. a jelly-like substance, composed mainly of water, occupying most of the space between the cell membrane and the nucleus.
8. a small sac, or vesicle, that contains digestive chemicals
9. a small, sac-like package of nutrients, proteins, or water created by the Golgi apparatus. Types of vesicles include vacuoles and lysosomes.
10. a stack of membranes that collects, modifies, and packages chemical compounds.
11. The basic unit of all living things.
12. a hair-like organelle that helps a cell move.