Question

1. what kind of solution is represented in the illustration below? higher concentration of substance outside of the cell water moves out of the cell 10. what kind of solution is represented in the illustration below? higher concentration of substance inside of the cell water moves into the cell 11. a cell is taken from an environment and has a high salt concentration and is placed into an environment that does not contain any salt. what effect will the change in environment have on the cell? 12. what is the diffusion of water called? 13. does diffusion require energy? 14. does facilitated diffusion require energy? 15. does active transport require energy? 16. a plant cell is placed in a hypotonic solution what will happen to the cell? 17. what cell process will move substances against the concentration gradient? 18. placing wilted lettuce in cold water will make it crisp again. describe what is happening to restore the lettuce to its original condition. 19. what is the function of the cell membrane? 20. what direction will the water move in the diagram to the right? dilute sugar molecules concentrated sugar molecules 21. what is the term where a human body tried to maintain a balance within the cells?

Explanation:

1. Since there is a higher concentration of substance outside the cell and water moves out of the cell, it is a hypertonic solution.
2. With a higher concentration of substance inside the cell and water moving into the cell, it is a hypotonic solution.
3. The cell has high salt - concentration and is placed in a salt - free environment. Water will move into the cell due to osmosis, causing the cell to swell.
4. The diffusion of water is called osmosis.
5. Diffusion is a passive process and does not require energy.
6. Facilitated diffusion is also a passive process and does not require energy.
7. Active transport moves substances against the concentration gradient and requires energy.
8. A plant cell in a hypotonic solution will take in water. The cell wall will prevent it from bursting, and it will become turgid.
9. Active transport moves substances against the concentration gradient.
10. Wilted lettuce in cold water has water moving into its cells (osmosis) as the cells are more concentrated than the surrounding water, making it crisp again.
11. The function of the cell membrane is to regulate the movement of substances in and out of the cell, provide protection, and maintain cell - shape.
12. Water will move from the side with dilute sugar molecules (higher water concentration) to the side with concentrated sugar molecules (lower water concentration) due to osmosis.
13. The term for the human body trying to maintain a balance within the cells is homeostasis.

Answer:

1. Hypertonic solution
2. Hypotonic solution
3. The cell will swell as water moves into it.
4. Osmosis
5. No
6. No
7. Yes
8. The cell will become turgid.
9. Active transport
10. Water moves into the lettuce cells by osmosis.
11. Regulate substance movement, protect, and maintain cell - shape.
12. From the side with dilute sugar molecules to the side with concentrated sugar molecules.
13. Homeostasis