<p>SCCS Life Science Name: Plant Vs. Animal Cells Class and Per: Date:</p><p>Purpose ─────────────────────────────────────── Students will use a light microscope to make a wet mount to view human cheek cells and compare plant and animal cells.</p><p>Materials ────────────────────────────────────── For the teacher: light microscope, stereoscope, slides, cover slips, eyedropper, beaker of water, iodine, toothpicks, Elodea leaf For each student: light microscope, lab packets, pencils</p><p>Safety ──────────────────────────────────────── Use care when using sharp scissors. Iodine can stain permanently.</p><p>Activity ─────────────────────────────────────── A. Pre-Activity Discussion and Demonstration 1.Demo: Mrs. Brenner will place a small drop of iodine onto a clean slide. 2. Using a toothpick, Mrs. Brenner will gently scrape the inside of her cheek. 3. Place the toothpick tip into the iodine and mix. The iodine stains the cells so you can see them. 4. Observe the slide under the microscope. Sketch the following observations: • Cheek cell under low power (10X) • Cheek cell under high power (40X) 5. Label the nucleus, cell membrane, and cytoplasm</p><p>B. Student Activity 1. Place a drop of water on a clean slide. 2. Place an Elodea leaf in a drop of water and then place a cover slip on top. 3. Sketch 2 observations of the Elodea leaf cells: Observe under low power first (10X), then under high power (40X). ****Remember: Use only the fine adjustment on high power (40X).****</p><p>D. Post-Activity Discussion 1. Answer all questions in the lab write-up. </p><p>Remember, make your drawings as detailed as possible. Use color to help your drawing look like what you see through the microscope lens.</p><p>Results</p><p>1 1. Plant Cell</p><p>Low Power High Power</p><p>2. Animal Cell</p><p>Low Power High Power</p><p>2 3. Labels Using your textbook, label the structures (organelles) in you drawings above.</p><p>4. Table Use your textbook to write out a list of cell organelles in the organelle column of the table. Put an “X” in the plant column if the organelle is found in plant cells, and an “X” in the animal column if the organelle is found in animal cells. (You can use the textbook !!)</p><p>Organelle Present in Plant Cell Present in Animal Cell</p><p>Conclusion: Answer the following questions on a separate sheet of paper. 1. What (if any) structures are found in plants but not in animals? 2. What (if any) structures are found in animals but not in plants? 3. Is either a plant or an animal cell more complex? Why or why not? 4. What part of the plant cell makes a plant green? 5. Why do you think that there are many small chloroplasts in plant cells instead of just one or two large ones? 6. Which organelles take up the most space in a plant cell? 7. Which organelles take up the most space in an animal cell? 8. Is the same organelle most common in both plants and animals?</p><p>3</p>