Practice Formative & Extension Questions (9) - Exchange and Balance – Membranes & Transport
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Formative & Extension Questions

Practice - Formative & Extension Questions

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Practice Questions

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Question 1 Easy

What does Fick's second law relate to?

💡 Hint: Think about how substances move over time.

Question 2 Easy

Calculate net water potential if Ψs = -0.5 MPa and Ψp = 0.2 MPa.

💡 Hint: You need to add the two potentials.

4 more questions available

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Question 1

What does Fick's Second Law describe?

Energy transfer
Diffusion process
Cellular respiration

💡 Hint: It relates to how concentration changes over time.

Question 2

True or False: Water moves from regions of high water potential to low water potential.

True
False

💡 Hint: Think about the definition of water potential.

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Challenge Problems

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Challenge 1 Hard

A kidney cell has Ψs = -1.5 MPa and is placed in a solution with Ψ = -0.5 MPa. Describe the water movement and explain why.

💡 Hint: Compare the water potentials to predict the direction of movement.

Challenge 2 Hard

Design a detailed experiment using Xenopus oocytes to test the effect of a specific aquaporin inhibitor on water flow, including control measures.

💡 Hint: Consider how to ensure reliable measurements.

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