Question

1. you know that this cell is in a(n) __ solution because it . a. hypotonic, is turgid b. hypotonic, lysed c. hypertonic, lysed d. hypertonic solution, lost water e. hypertonic, gained water 6. the concentration of solutes in a red blood cell is about 2%. sucrose cannot pass through the membrane, but water and urea can. osmosis would cause red blood cells to shrink the most when immersed in which of the following solutions? a. a hypertonic sucrose solution b. a hypotonic sucrose solution c. a hypertonic urea solution d. a hypotonic urea solution e. pure water 7. sea water is dangerous to drink because a. one cup of sea water contains enough sodium to poison you b. sea water is hypertonic to your body tissues and drinking it will cause you to lose water by osmosis c. sea water is isotonic to your body fluids and you will absorb too much water, causing your cells to burst d. the salt causes hypertension and you will promptly die of a stroke e. it contains toxic levels of iodine 8. if the volume of a cell increases when it is placed in a solution, that solution is said to be __ to the cell. a. hypertonic b. subatomic c. isotonic d. gin and tonic e. hypotonic matching match the direction of net movement to its description. the direction of net movement choices may be used more than once. 1. simple passive diffusion a. movement from high to low concentration 2. facilitated diffusion b. movement from low to high concentration 3. active transport 4 water with regards to the water concentration gradient during osmosis 5. water with regard to the solute concentration gradient during osmosis

Explanation:

• Question 5: Animal cells in a hypotonic solution gain water and can lyse (burst). So the answer is b as the cell is lysed in a hypotonic solution.
• Question 6: A hypertonic sucrose solution has a higher solute - concentration outside the cell compared to the red - blood cell. Since sucrose can't pass through the membrane, water will move out by osmosis, causing the cell to shrink the most.
• Question 7: Sea water is hypertonic to body tissues. When drunk, water will move out of body cells by osmosis, leading to dehydration.
• Question 8: If a cell's volume increases when placed in a solution, the solution is hypotonic as water moves into the cell.
• Matching: Simple passive diffusion and facilitated diffusion are both forms of passive transport where substances move from high to low concentration. Active transport moves substances from low to high concentration. During osmosis, water moves from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration).

Answer:

• 5. b. hypotonic, lysed
• 6. a. a hypertonic sucrose solution
• 7. b. sea water is hypertonic to your body tissues and drinking it will cause you to lose water by osmosis
• 8. e. hypotonic
• Matching:
• 1. a. movement from high to low concentration
• 2. a. movement from high to low concentration
• 3. b. movement from low to high concentration
• 4. a. movement from high to low concentration
• 5. b. movement from low to high concentration