Chapter 2.1

2. uses energy to pick up specific molecules and carry them across the cell membrane
3. glucose enters a liver cell through a protein channel. No engery is required
5. compound light microscopes focus light through
7. water molecules moves out of the skin cells of a person swimming in a freshwater pond. No energy
8. what is the cell's nucleus filled with
9. where photosynthesis occurs
12. the first person to see living cells under a microscope
15. an organism that is made of one cell is what type of organism
16. a large organism is made up of many millions of
17. the ability to distinguish two nearby objects
18. a cells function can include obtaining food and water and getting rid of
19. allows large particles to leave the cell

1. facilitated diffusion moves large molecules through
4. oxygen moved into a concentrating heart muscle. No energy is required
5. the cell membrane is built of a double layer
6. a nerve cell uses energy to pump sodium out of the cell into a sodium rich enviorment
9. controls the materials that move into and out of a cell
10. the scientist who determined that all animals are made of cells
11. describes how cells are related to living things
13. occurs when a cell engulfs large food particles to bring them into the cell
14. ribosomes are made in the