Chapter 2 pt1

5. Is the process by which molecules move from an area of higher concentration to an area of lower concentration
6. A sack like organelle that stores food, water, or other minerals needed by the cell.
9. Is the diffusion of water molecules across a selectively permeable membrane
10. The cell membrane takes particles into the cell by changing shape and energizing the particles
11. Was the first person to see living cells under a microscope
14. What we use to see small objects or living things.
17. Fills the region between the cell membrane and the nucleus.
18. The basic unit of structure and function in living things.
19. Permeable Some substances can cross the membrane while others cannot
20. Is an organelle in the cells of plants and some other organisms that capture energy from sunlight and changes it to energy so the cells can use it for food.
21. Is a widely accepted explanation of the relationship between cells and living things.

1. Allows large particles to leave a cell
2. Was the first to conclude that all plants are made from cells
3. Convert energy stored in food to energy the cell can use to live and function.
4. The control center of the cell.
7. An object appears larger than it actually is.
8. organisms have specialized cells while unicellular organisms have only one cell.
12. Is a tiny cell structure that carries out a specific function within the cell.
13. Concluded that all animals were made from cells
15. Is a thin, flexible barrier that surrounds a cell and controls what goes in and out.
16. The ability to distinguish two nearby objects
21. The thing that is around a plant cell that protects it and keeps out unwanted things.