Practice Simple Diffusion (6.1.3.2.1) - Human Physiology - IB 12 Biology
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Simple Diffusion

Practice - Simple Diffusion

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Practice Questions

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Question 1 Easy

What is simple diffusion?

💡 Hint: Think about how oxygen moves in the body.

Question 2 Easy

Name one type of molecule that can use simple diffusion.

💡 Hint: Consider gases that need to move through membranes.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is simple diffusion?

A type of active transport
A passive transport process
An enzymatic process

💡 Hint: It does not require energy.

Question 2

True or False: Simple diffusion requires a protein to function.

True
False

💡 Hint: Think about the size and type of molecules passing.

1 more question available

Challenge Problems

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Challenge 1 Hard

Given a scenario where a substance has a high concentration outside of a cell and a low concentration inside, describe how this substance would enter the cell. Include the role of simple diffusion in your explanation.

💡 Hint: Refer to how oxygen enters the bloodstream.

Challenge 2 Hard

Suppose that a type of fatty acid cannot pass through a semi-permeable membrane due to its size. Discuss the implications for nutrient absorption in the body and how this relates to simple diffusion.

💡 Hint: Consider how larger or polar molecules travel across membranes.

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