0653.B3.2.01 — State that water diffuses through partially 4 Describe osmosis as the net movement permeable membranes by osmosis of water molecules from a : past paper questions
Real questions on 0653.b3.2.01 — state that water diffuses through partially 4 describe osmosis as the net movement permeable membranes by osmosis of water molecules from a
The newest 17 of 17 written questions. Open one to see it on the real paper.
- 0653/31 · October/November 2025 · Q1b(ii)[1]
Water moves through partially permeable membranes by a type of diffusion. Name this type of diffusion.
See it on the paper → - 0653/43 · October/November 2025 · Q2c[4]
Fig. 2.2 shows plant cells before and after being immersed in a concentrated sugar solution. before after Fig. 2.2 Explain the effect of the concentrated sugar solution on the cells shown in Fig. 2.2.
See it on the paper → - 0653/31 · May/June 2025 · Q1b(i)[2]
Complete the sentence to describe the movement of water into the cell. Water diffuses through a permeable membrane by (i)
See it on the paper → - 0653/32 · February/March 2025 · Q2d(ii)[1]
Water moves into cells through a partially permeable membrane by a type of diffusion. State the name of this type of diffusion.
See it on the paper → - 0653/21 · October/November 2024 · Q12[1]
Which row identifies substances that travel in the directions P and Q?
See it on the paper → - 0653/21 · October/November 2024 · Q34[1]
Which process is being observed, and which density change causes it?
See it on the paper → - 0653/32 · October/November 2024 · Q4c(ii)[2]
Describe how water moves into a cell.
See it on the paper → - 0653/33 · October/November 2024 · Q4c(ii)[2]
Describe how water moves into a cell.
See it on the paper → - 0653/12 · October/November 2023 · Q1[1]
What is osmosis?
See it on the paper → - 0653/33 · May/June 2023 · Q1c(i)[2]
Suggest which solution A, B, C, D or E has the greatest concentration of sugar. Give a reason for your answer. solution reason
See it on the paper → - 0653/33 · May/June 2023 · Q1c(ii)[1]
Suggest why the potato in solution B does not change in mass.
See it on the paper → - 0653/33 · May/June 2023 · Q1c(iii)[1]
The potato tissue changes mass because a substance moves across the cell membrane. State the name of this substance.
See it on the paper → - 0653/33 · October/November 2022 · Q7d(ii)[1]
Water diffuses through partially permeable membranes. State the name of this type of diffusion.
See it on the paper → - 0653/32 · February/March 2022 · Q1b(ii)[1]
Water has diffused out of the plant cell through the partially permeable membrane. State the name of this type of diffusion.
See it on the paper → - 0653/42 · February/March 2022 · Q4c[3]
Water moves in and out of cells in the body. Fig. 4.2 shows a red blood cell in a beaker of concentrated sugar solution. concentrated sugar solution red blood cell not to scale Fig. 4.2 The cell in Fig. 4.2 loses water and shrinks. Explain why. Use ideas about water potential in your answer.
See it on the paper → - 0653/21 · May/June 2019 · Q1[1]
The net movement of water molecules from a region of higher water potential to a region of lower water potential through a partially permeable membrane is called What is the missing word at the end of the sentence?
See it on the paper → - 0653/22 · May/June 2019 · Q1[1]
A student is reading a text book. He finds the following definition about how substances move in and out of cells. The net movement of water molecules from a region of higher water potential to a region of lower water potential through a partially permeable membrane is called The corner of the page has been torn. Wh...
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What examiners said
There were many correct answers from candidates who had learned the definition of osmosis. The most common mistake was diffusion. Candidates are reminded that osmosis is a special type of diffusion involving the net movement of water through a partially permeable membrane.
— Examiner report, May/June 2025, 0653/31 Q1(b)(i) (Cambridge)
This was generally answered well. A few candidates stated ‘active transport’ or ‘absorbing’ instead of osmosis.
— Examiner report, February/March 2025, 0653/32 Q2(d)(ii) (Cambridge)
While a majority of candidates chose the correct option D, a number of candidates incorrectly chose option C. In both cases, candidates identified that osmosis involves water, but some thought movement was across the cell wall rather than a partially permeable membrane.
— Examiner report, October/November 2023, 0653/12 Q1 (Cambridge)
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