Question 1: What is the process called where water moves across a semi-permeable membrane?

Answer: Osmosis

Question 2: Which of the following best describes diffusion?

Answer: Movement of particles from high to low concentration

Question 3: True or False: Osmosis requires energy to occur.

Answer: False

Question 4: True or False: Diffusion can occur in gases and liquids.

Answer: True

Question 5: Explain how osmosis is different from diffusion.

Answer: Osmosis specifically refers to the movement of water across a semi-permeable membrane, whereas diffusion involves the movement of particles from an area of high concentration to low concentration.

Question 6: Describe a real-life example of diffusion.

Answer: An example of diffusion is the spreading of perfume scent in a room.

Question 7: Identify one factor that affects the rate of diffusion.

Answer: Temperature affects the rate of diffusion; higher temperatures increase the rate.

Question 8: Calculate the concentration gradient if the concentration outside a cell is 10 mM and inside is 5 mM. Use the formula: concentration gradient = concentration outside - concentration inside.

Answer: 5 mM

Question 9: Match the following terms to their definitions:

Answer: See full answer key

Question 10: Order the steps of osmosis in a plant cell when placed in a hypotonic solution.

Answer: See full answer key

Question 11: Fill in the blank: In diffusion, particles move from an area of _____ concentration to an area of _____ concentration.

Answer: high, low

Question 12: Discuss the importance of osmosis and diffusion in maintaining homeostasis in living organisms.

Answer: Osmosis and diffusion are critical for maintaining homeostasis by regulating the movement of water and solutes across cell membranes. This ensures that cells maintain optimal concentrations of ions and molecules, which is vital for cellular processes and overall health.