| The Cell Activities
Act #1: What is the Cell? 1) What is the CELL THEORY again? 2) What is a CELL? (get the definition pg. 52) 3) What is life? (get the definition pg. 3) 4) The cell is made up of three main components, what are they? Act #2: CELL MEMBRANE of the Animal Cell A. The Phospholipid 1) Sketch Figure 4.3 (a). 2) Use Figure 3.2 pg. 36 to label the phosphate functional group on your drawing. What are those two stringy chains called? 3) Which part is hydrophilic and which part is hydrophobic? 4) Take a look at Figure 4.3 (b). Why do the phospholipids arrange themselves in that manner? Remember back to our �soap� discussion. B. The Fluid Mosaic Model 1) Check out Figure 4.4 pg. 53. What is the advantage of having a �fluid� plasma membrane? 2) What is the function of the membrane? Act #3: The CYTOPLASM 1) Where can we find the cytoplasm? 2) What is in the cytoplasm? 3) What�s an ORGANELLE? (pg. 56) Give me three organelle examples. Act #4: The NUCLEUS 1) What are the parts that make up the nucleus? 2) What are the two main jobs of the nucleus? 3) In terms of a nucleus, what�s the difference between an EUKARYOTE and a PROKARYOTE? Act #5: The Plant Cell 1) Take a look at pg. 57 (a) on the plant cell. Please sketch it and label: the Golgi body, central vacuole, the endoplasmic reticulum, mitochondrion, chloroplast, nucleus, and cell wall. 2) Using Figure 4.9 pg. 58, the transmission electron micrograph of a plant cell, approximate the sizes of the parts above. For example, one chloroplast is approximately 6 um. 3) Which of the parts of the plant cell would you expect to see under the highest magnification? 4) Try it! Get an onion slice and remove the transparent inner membrane. Make a wet mount slide and add a drop of iodine to stain the onion cells. Observe under scanning, low, and high power. 5) Draw one onion cell, making sure you�ve given me the total magnification and the approximate size of the cell. Label: the cytoplasm, nucleus, cell wall, and vacuole. Notice that the plant cell is rectangular (box-like). The cell wall is rigid not �fluid� so plant cells do not have the flexibility as animal cells do. Act #6: The Animal Cell 1) Take a look at pg. 57 (b) on the animal cell. Please sketch it and label: the Golgi body, lyosome(s), the endoplasmic reticulum, mitochondrion, nucleus, and cell membrane. 2) Using Figure 4.10 pg. 59, the transmission electron micrograph of an animal cell, approximate the sizes of the parts above. For example, one mitochondrion is approximately 1 um. 6) Which of the parts of the animal cell would you expect to see under the highest magnification? 3) Try it! Get a slide labeled �Star Fish egg�. Draw the cell and label the nucleus, cytoplasm, and cell membrane. Make sure you�ve given me the total magnification and the approximate size of the animal cell. Notice the animal cell is circular. |