**Exercise 5 – The Cell Cycle and Mitosis**1. What is the cell cycle? What are the phases of the cell cycle (include the subphases of interphase and the subphases of mitosis)? What happens in each of these phases? What is cytokinesis? What is the Go phase? Give an example of a cell that enters the Go phase.2. Why is mitosis necessary?3. How many daughter cells are formed during mitosis? What is their genetic relationship? If the parent cell had 46 chromosomes at the start of mitosis, how many chromosomes will each daughter cell have after cytokinesis?4. Know how to identify interphase and each phase of mitosis on an image of a microscope slide. You should know how to do this for both Ascaris and whitefish blastula.**Exercise 6 – Movement of Molecules: Diffusion and Osmosis**5. Define diffusion. Is diffusion a passive or an active process? Explain how solute moves in this way.6. Use your knowledge of diffusion to explain what happened over time when you observed a crystal of methylene blue dropped into a beaker of water. Be sure to use equilibrium in your explanation.7. Explain your observations over time after a drop of methylene blue and a drop of potassium permanganate were placed in the agar. What factors affect the rate of diffusion?8. What is dialysis and how does this movement take place? During your observation of the experiments, which molecules/ions were able to pass through the dialysis tubing? What does this tell you about the relative size of these molecules/ions? Use the table on the next page to explain how you determined the identity of the molecules/ions that diffused out of the dialysis tubing. **Educational Transcription for Dialysis Experiment:**In a dialysis experiment, various reagents are used to test for the presence of specific substances. Below is an outline of the reagents used and the expected color changes for positive and negative results:| Reagent | Testing for presence of: | Negative Result Color | Positive Result Color ||----------------|---------------------------|-----------------------|-----------------------|| Silver Nitrate | | | || Iodine | | | || Benedict’s | | | || Biuret | | | |**Study Questions:**9. **Explain why the dialysis tubing is a semipermeable or selectively permeable membrane.**10. **What was the purpose of running negative and positive controls?**11. **Define osmosis. Explain how a solvent moves in this way. Is osmosis a passive or an active process?**12. **What is a hypotonic solution, isotonic solution, and hypertonic solution?**13. **The solute concentration inside a red blood cell is equivalent to 0.9% NaCl. Assess three salt solutions tested (0%, 0.9%, and 5%) to determine whether each test tube turned transparent or cloudy and whether the red blood cells hemolyzed, crenated, or remained normal. Provide the appearance of each test tube and state of the red blood cells using your knowledge of isotonic, hypertonic, and hypotonic solutions.**---**Exercise 7 – Introduction to Histology:**14. **What are tissues? Name the four major types of tissues in the human body.**15. **Name the three primary germ layers. Indicate which primary germ layers epithelial tissues and connective tissues develop from.**16. **List general characteristics that all epithelial tissues have in common.**17. **Name the functions of epithelial tissue. Which type of epithelial tissue is found in areas that need protection?**

Cells are the biological unit of life. The cellular organelles in the cell like mitochondria, golgi…

This study Or studying the lab manual itself. signed exercises. You should know all of the terms in bold in your lab manual Exercise 5 – The Cell Cycle and Mitosis. 1. What is the cell cycle? What are the phases of the cell cycle (include the subphases of interphase and the subphases of mitosis)? What happens in each of these phases? What is cytokinesis? What is the Go phase? Give an example of a cell that enters the Go phase. 2. Why is mitosis necessary? 3. How many daughter cells are formed during mitosis? What is their genetic relationship? If the parent cell had 46 chromosomes at the start of mitosis, how many chromosomes will each daughter cell have after cytokinesis? 4. Know how to identify interphase and each phase of mitosis on an image of a microscope slide. You should know how to do this for both Ascaris and whitefish blastula rercise 6-Movement of Molecules: Diffusion and Osmosis. 5. Define diffusion. Is diffusion a passive or an active process? Explain how solute moves in this way. 6. Use your knowledge of diffusion to explain what happened over time when you observed a crystal of methylene blue dropped into a beaker of water. Be sure to use equilibrium in your explanation. 7. Explain your observations over time after a drop of methylene blue and a drop of potassium permanganate were placed in the agar. What factors affect the rate of diffusion? 8. What is dialysis and how does this movement take place? During your observation of the experiments, which molecules/ions were able to pass through the dialysis tubing? What does this tell you about the relative size of these molecules/ions? Use the table on the next page to explam how you determined the identity of the molecules/ions that diffused out of the dialysis tubing.

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...