Cells

1. diffusion of water molecules only through a membrane
4. organelles that break down food and release energy
7. vesicles for the temporary storage of materials
9. liquid part of a cell inside the cell membrane
10. process during which a cell's vesicles release their contents outside the cell
11. smallest unit of life
12. tool used to see cells
14. part of a cell that directs cell activity and contains genetic information
15. simple cell organelles that help manufacture proteins

2. flexible covering that protects the inside of a cell from the environment
3. movement of substances from an area of higher concentration to an area of lower concentration
5. membrane surrounded component of eukaryotic cell
6. stiff structure outside the cell membrane that protects a cell from attack
8. process during which a cell takes in a substance by surrounding it with the cell membrane
13. organelle that uses light energy and makes food