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Cambridge IGCSE Biology practice

What causes particles to move during diffusion?

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MCQ

Type

cambridge_mcq

Style

Topic

Diffusion

Exam-style question

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What causes particles to move during diffusion?.

  1. A.Their random motion
  2. B.External forces
  3. C.Gravity
  4. D.Magnetism

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Paper 3 structured question: Diffusion

Paper 3Theory (Core)2 marks

Description

Diffusion process

Particles move from an area of higher concentration to an area of lower concentration due to their random motion.

  1. a

    Describe what causes particles to move during diffusion.

    Aim for approximately 2 distinct marking points.

    [2]