Osmosis — Paper 2 · IGCSE Science - Combined 0653

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. What is the missing word at the end of the sentence? A diffusion B dissolving C evaporation D osmosis

1 marks

Answer: D

This question in 0653/21 May/June 2019

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. What is the missing word at the end of the sentence? A diffusion B dissolving C evaporation D osmosis

1 marks

Answer: D

This question in 0653/22 May/June 2019

2 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. What is the missing word at the end of the sentence? A diffusion B dissolving C evaporation D osmosis

1 marks

Answer: D

This question in 0653/23 May/June 2019

1 The cytoplasm of a plant cell contains a 15% sugar solution. The plant cell is placed in sugar solutions of different concentrations. In which solution would there be a net diffusion of water out of the cell? A 5% sugar solution B 10% sugar solution C 15% sugar solution D 20% sugar solution

1 marks

Answer: D

This question in 0653/21 May/June 2020

2 Which row about osmosis is correct? molecules details of permeability that move movement of membrane A solute from a concentrated fully solution to a dilute solution B solute from a dilute solution partially to a concentrated solution C water from a concentrated fully solution to a dilute solution D water from a dilute solution partially to a concentrated solution

1 marks

Answer: D

This question in 0653/22 May/June 2020

3 An animal cell is placed in a solution with a water potential lower than its cytoplasm. Which statement correctly describes the movement of water across the cell membrane? A equal movement in and out of the cell B net movement into the cell C net movement out of the cell D no movement in or out of the cell

1 marks

Answer: C

This question in 0653/22 Feb/March 2021

2 The diagram shows three plant cells, P, Q and R. cell P cell Q highest medium water water potential potential lowest water potential cell R What is the correct net movement of water by osmosis? A B C D cell P cell Q cell P cell Q cell P cell Q cell P cell Q cell R cell R cell R cell R

1 marks

Answer: A

This question in 0653/22 Feb/March 2022

2 The plant cell in the diagram is in a concentrated salt solution. Which arrow represents osmosis? B A D C

1 marks

Answer: D

This question in 0653/21 May/June 2022

2 The diagram shows a plant palisade mesophyll cell. X What will happen to structure X if this cell is immersed in distilled water or concentrated salty water? structure X structure X in concentrated in distilled water salty water A shrink shrink B shrink swell C swell swell D swell shrink

1 marks

Answer: D

This question in 0653/22 May/June 2022

1 Two pieces of potato are cut to have exactly the same mass and shape. The mass is measured and recorded. concentrated water salt solution potato piece potato piece One piece of potato is placed in water and the other piece is placed in concentrated salt solution. They are both left for one hour. The mass of each piece of potato is then measured again. What happens to the mass of each piece of potato? mass of potato mass of potato placed in concentrated placed in water salt solution A decreases decreases B decreases increases C increases decreases D increases increases

1 marks

Answer: C

This question in 0653/22 Feb/March 2023

5 Which statement describes a feature of the root hair cells of plants? A They help the roots to move between soil particles in the ground. B They have fully permeable cell membranes to improve nitrate ion entry. C They have large surface areas to increase water uptake by osmosis. D They have partially permeable cell walls to give the cells more strength.

1 marks

Answer: C

This question in 0653/22 Feb/March 2023

3 Which row describes the movement of water by osmosis? from a region of to a region of through A low water potential high water potential a partially permeable membrane B low water potential high water potential a totally permeable membrane C high water potential low water potential a totally permeable membrane D high water potential low water potential a partially permeable membrane

1 marks

Answer: D

This question in 0653/21 May/June 2023

2 What is osmosis? A the movement of salt across a cell wall B the movement of salt across a partially permeable membrane C the movement of water across a cell wall D the movement of water across a partially permeable membrane

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2023

3 A plant cell was placed in a solution with a lower water potential than the cell. Which diagram represents the movement of water during the process of osmosis? A B key = less water movement C D = more water movement

1 marks

Answer: D

This question in 0653/23 May/June 2024

2 Water enters a plant cell. In which order does the water pass through the cell structures before reaching the vacuole? A cell membrane  cell wall  cytoplasm B cell wall  cell membrane  cytoplasm C cell wall  cytoplasm  cell membrane D cytoplasm  cell wall  cell membrane

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2024

3 The diagram shows a plant cell in a concentrated salt solution. concentrated salt solution Which row shows the net movement of water molecules and the effect on the plant cell? net movement of effect on water molecules the plant cell A out of cell becomes turgid B out of cell becomes flaccid C into cell becomes turgid D into cell becomes flaccid

1 marks

Answer: B

This question in 0653/22 Feb/March 2025

1 Osmosis can be defined as the net movement of … 1 … molecules from a region of … 2 … water potential to a region of … 3 … water potential, through a partially permeable membrane. Which words complete gaps 1, 2 and 3? 1 2 3 A sugar higher lower B sugar lower higher C water lower higher D water higher lower

1 marks

Answer: D

This question in 0653/21 May/June 2025

3 Which row describes osmosis? osmosis is the net movement of water molecules through a partially permeable membrane from to A a dilute solution with a concentrated solution with a higher water potential a lower water potential B a concentrated solution with a dilute solution with a higher water potential a lower water potential C a dilute solution with a concentrated solution with a lower water potential a higher water potential D a concentrated solution with a dilute solution with a lower water potential a higher water potential

1 marks

Answer: A

This question in 0653/22 May/June 2025

4 Which row about osmosis is correct? molecules details of type of permeable that move movement membrane A water from a dilute solution partially to a concentrated solution B water from a concentrated solution fully to a dilute solution C solute from a dilute solution partially to a concentrated solution D solute from a concentrated solution fully to a dilute solution

1 marks

Answer: A

This question in 0653/23 May/June 2025

3 Osmosis is the net movement of water molecules through a partially permeable membrane. In which direction does this net movement of water molecules take place? A from a concentrated solution to a dilute solution B from a dilute solution to pure water C from a region of lower water potential to a region of higher water potential D from a region of higher water potential to a region of lower water potential

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2025

3 Which process is described as the net movement of water molecules from a dilute solution to a concentrated solution through a partially permeable membrane? A absorption B evaporation C osmosis D transpiration

1 marks

Answer: C

This question in 0653/22 Oct/Nov 2025

2 Which statement describes osmosis? A net movement of water molecules from a lower to a higher water potential through the cell membrane B net movement of water molecules from a lower to a higher water potential through the cell wall C net movement of water molecules from a higher to a lower water potential through the cell membrane D net movement of water molecules from a higher to a lower water potential through the cell wall

1 marks

Answer: C

This question in 0653/23 Oct/Nov 2025