Learning objective

Recognize that certain substances enter and exit cells through diffusion across the cell membrane.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE BiologyMovement into and out of cellsCore content

Study support

Understand this objective

Quick explanation

This point belongs to Diffusion, especially Diffusion outcomes.
You need to be able to recognize that certain substances enter and exit cells through diffusion across the cell membrane.
The key ideas to know are State.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

This objective helps connect Diffusion outcomes to exam-style questions, flashcards, and revision notes for Diffusion.

Revision tools

Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 3Theory (Core)1 marks

Description

Oxygen enters cells and carbon dioxide leaves cells by diffusion across the cell membrane.

a
State the process by which oxygen enters cells.
Your answer
Aim for approximately 1 distinct marking point.
[1]

Revision notestopic notes

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