Cells The Basic Unit of Life

Part I. Analysis The cell features found only in plants are the _________ _______, ___________, and a large vacuole. The cell wall…(p. 55) The chloroplast …. (p.65) A large central vacuole helps maintain ___________ due to the turgor pressure inside a plant cell. (top of page 65)

3. Plant cells use ____________ to make their own food. This is an advantage over an animal cell.

Two pictures should be next… A picture of the plant cell A picture of the animal cell Label each picture.

Part II. Investigation A. -------Cell wall Cork Cells 516x

A. Cork Cells 4. The units that compose cork cells are (square, round). 5. The individual units are _________. 6. There is (nothing, many things) inside the cells. 7. There are ______ spaces between the cells. 8. These cells are (living, not living). They are empty.

B. Onion Cells 9. The cells are (rectangular, irregular, round). 10. The cells are all (similar, different) in shape. 11. The color of the living cytoplasm is (clear, colored).

Onion cell (with iodine) 12. When iodine was added the ______ became visible. 13. The cytoplasm became (clear, colored blue, colored brown). 14. The nuclei appear (darker, lighter) than the cytoplasm. 15. The nuclei are (in the same position, in different positions) in the cell.

16. The onion cell (has, does not have depth) 16. The onion cell (has, does not have depth). When focusing using the fine adjustment different parts of the cell come into focus at different levels.

There should be a picture of three onion cells There should be a picture of three onion cells. The nucleus, cell membrane, and cytoplasm should be labeled. Onion Cells 516x

C. Elodea A drawing of three elodea cells is next. The words “Elodea” and “516x” should be under the drawing. Using a ruler the drawing should be labeled. cell wall chloroplast cytoplasm nucleus (this was not easy to see. We did see the nucleus on the TV.)

D. Check Cell