chapter 2.1

2. what is the cell's nucleus filled with
4. water molecules moves out of the skin cells of a person swimming in a freshwater pond. No energy
6. a large organism is made up of many millions of
9. the first person to see living cells under a microscope
10. describes how cells are related to living things
13. uses energy to pick up specific molecules and carry them across the cell membrane
15. glucose enters a liver cell through a protein channel. No engery is required
18. occurs when a cell engulfs large food particles to bring them into the cell
19. a nerve cell uses energy to pump sodium out of the cell into a sodium rich enviorment

1. oxygen moved into a concentrating heart muscle. No energy is required
2. controls the materials that move into and out of a cell
3. the ability to distinguish two nearby objects
5. where photosynthesis occurs
7. facilitated diffusion moves large molecules through
8. ribosomes are made in the
11. compound light microscopes focus light through
12. a cells function can include obtaining food and water and getting rid of
14. an organism that is made of one cell is what type of organism
16. the cell membrane is built of a double layer
17. the scientist who determined that all animals are made of cells