IGCSE Co-ordinated Sciences (Double Award) 0654 · Biology · 11

0654.B3.1.01 — Describe diffusion as the net movement of particles from a region of their higher concentration to a region of their lower concentration (i.: past paper questions

5 real questionsasked in 2 of the last 10 exam series2019–2025usually: Which, What

Real questions on 0654.b3.1.01 — describe diffusion as the net movement of particles from a region of their higher concentration to a region of their lower concentration (i.

The newest 5 of 5 written questions. Open one to see it on the real paper.

0654/02 · Specimen 2025 · Q6[1]
Which statement is correct?
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0654/32 · October/November 2025 · Q1b(iii)[2]
The carbon dioxide needed for photosynthesis diffuses into the plant through the stomata. Place ticks (3) in two boxes to show the statements that correctly describe diffusion. Diffusion is described as the net movement of particles. Diffusion is the result of random movement of particles. Diffusion is the movement of...
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0654/21 · May/June 2021 · Q2[1]
What is the effect of increasing the concentration gradient on the rate of diffusion?
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0654/21 · May/June 2021 · Q22[2]
Which statements are correct?
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0654/21 · May/June 2019 · Q2[1]
Which row correctly describes the diffusion of molecules from P to Q?
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11 0654.B3.1.01 — Describe diffusion as the net movement of particles from a region of their higher concentration to a region of their lower concentration (i.

Describe diffusion as the net movement of particles from a region of their higher concentration to a region of their lower concentration (i.e. down a concentration gradient), as a result of their random movement
State that some substances move into and out of cells by diffusion through the cell membrane
Describe the importance of diffusion of gases 4 Investigate the factors that influence diffusion, and solutes in living organisms limited to: surface area, temperature, concentration gradient and distance

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