Movement of materials in and out of the cell Practice exercise 1

During an experiment, a student places red blood cells in pure water. After a few minutes, the cells burst. Explain why this happened using the concept of osmosis. (2 marks)

After playing soccer, Kevin drinks water. Explain how osmosis helps water move into his body cells. (2 marks)

After playing soccer, Kevin drinks water. Explain how osmosis helps water move into his body cells. (2 marks)

After playing soccer, Kevin drinks water. Explain how osmosis helps water move into his body cells. (2 marks)

The diagram below shows two animal cells. Cell A is placed in pure water, and Cell B is in a concentrated sugar solution. Describe what happens to each cell and explain how osmosis affects animal cells in such conditions. (2 marks)

The diagram below shows two animal cells. Cell A is placed in pure water, and Cell B is in a concentrated sugar solution. Describe what happens to each cell and explain how osmosis affects animal cells in such conditions. (2 marks)

The diagram below shows two animal cells. Cell A is placed in pure water, and Cell B is in a concentrated sugar solution. Describe what happens to each cell and explain the importance of osmosis in these conditions. (2 marks)

The diagram below shows two animal cells. Cell A is placed in pure water, and Cell B is in a concentrated sugar solution. Describe what happens to each cell and explain the importance of osmosis in these conditions. (2 marks)

The diagram below shows two animal cells. Cell A is placed in pure water, and Cell B is in a concentrated sugar solution. Describe what happens to each cell and explain the importance of osmosis in these conditions. (2 marks)

The diagram below shows two animal cells. Cell A is placed in pure water, and Cell B is in a concentrated sugar solution. Describe what happens to each cell and explain the importance of osmosis in these conditions. (2 marks)

The diagram below shows two animal cells. Cell A is placed in pure water, and Cell B is in a concentrated sugar solution. Describe what happens to each cell and explain the importance of osmosis in these conditions. (2 marks)

The diagram below shows two animal cells. Cell A is placed in pure water, and Cell B is in a concentrated sugar solution. Describe what happens to each cell and explain the importance of osmosis in these conditions. (2 marks)

A dog drinks water after playing in the sun. Explain how osmosis helps the dog’s body stay healthy after drinking water.  (1 mark)

A dog drinks water after playing in the sun. Explain how osmosis helps the dog’s body stay healthy after drinking water.  (1 mark)

A dog drinks water after playing in the sun. Explain how osmosis helps the dog’s body stay healthy after drinking water.  (1 mark)

Look at the image below showing a glass of water with a spoonful of red food colouring added without stirring. The colour slowly spreads through the water. What process is taking place and how is it similar to what happens in living things?   (2 marks)

Look at the image below showing a glass of water with a spoonful of red food colouring added without stirring. The colour slowly spreads through the water. What process is taking place and how is it similar to what happens in living things?   (2 marks)

Look at the image below showing a glass of water with a spoonful of red food colouring added without stirring. The colour slowly spreads through the water. What process is taking place and how is it similar to what happens in living things?   (2 marks)

Look at the image below showing a glass of water with a spoonful of red food colouring added without stirring. The colour slowly spreads through the water. What process is taking place and how is it similar to what happens in living things?   (2 marks)

A slice of bread is kept inside a tightly closed plastic bag. After a few days, the inside of the bag has a strong smell. Use the concept of diffusion to explain how this happened.  (2 marks)

A slice of bread is kept inside a tightly closed plastic bag. After a few days, the inside of the bag has a strong smell. Use the concept of diffusion to explain how this happened.  (2 marks)

A slice of bread is kept inside a tightly closed plastic bag. After a few days, the inside of the bag has a strong smell. Use the concept of diffusion to explain how this happened.  (2 marks)

A mountain climber drinks a lot of plain water without eating salty food. Later, she starts feeling dizzy. Explain how osmosis may have caused this reaction in her body.  (2 marks)

A mountain climber drinks a lot of plain water without eating salty food. Later, she starts feeling dizzy. Explain how osmosis may have caused this reaction in her body.  (2 marks)

A mountain climber drinks a lot of plain water without eating salty food. Later, she starts feeling dizzy. Explain how osmosis may have caused this reaction in her body.  (2 marks)

A mountain climber drinks a lot of plain water without eating salty food. Later, she starts feeling dizzy. Explain how osmosis may have caused this reaction in her body.  (2 marks)

Jane swallowed a pain relief tablet after getting a headache. After a few minutes, she felt better. How does diffusion help the medicine to work?  (1 mark)

Jane swallowed a pain relief tablet after getting a headache. After a few minutes, she felt better. How does diffusion help the medicine to work?  (1 mark)

Jane swallowed a pain relief tablet after getting a headache. After a few minutes, she felt better. How does diffusion help the medicine to work?  (1 mark)

Ripe mangoes are placed in one corner of a classroom. After some time, students in all parts of the room can smell them. Explain the process that caused the smell to spread and how it relates to diffusion in living things.   (2 marks)

Ripe mangoes are placed in one corner of a classroom. After some time, students in all parts of the room can smell them. Explain the process that caused the smell to spread and how it relates to diffusion in living things.   (2 marks)

Ripe mangoes are placed in one corner of a classroom. After some time, students in all parts of the room can smell them. Explain the process that caused the smell to spread and how it relates to diffusion in living things.   (2 marks)

Ripe mangoes are placed in one corner of a classroom. After some time, students in all parts of the room can smell them. Explain the process that caused the smell to spread and how it relates to diffusion in living things.   (2 marks)

The diagram below shows two plant cells: one turgid and one plasmolysed. Explain the difference between the two cells and describe the type of solution(distilled water or concentrated sugar solution) each was placed in to cause the observed changes. (2 marks)

The diagram below shows two plant cells: one turgid and one plasmolysed. Explain the difference between the two cells and describe the type of solution(distilled water or concentrated sugar solution) each was placed in to cause the observed changes. (2 marks)

The diagram below shows two plant cells: one turgid and one plasmolysed. Explain the difference between the two cells and describe the type of solution(distilled water or concentrated sugar solution) each was placed in to cause the observed changes. (2 marks)

The diagram below shows an animal cell in a beaker of distilled water. Describe the process taking place in the diagram. What could happen to the cell if this continues, and why? (2 marks)

The diagram below shows an animal cell in a beaker of distilled water. Describe the process taking place in the diagram. What could happen to the cell if this continues, and why? (2 marks)

The diagram below shows an animal cell in a beaker of distilled water. Describe the process taking place in the diagram. What could happen to the cell if this continues, and why? (2 marks)

The diagram below shows an animal cell in a beaker of distilled water. Describe the process taking place in the diagram. What could happen to the cell if this continues, and why? (2 marks)

The diagram below shows an animal cell in a beaker of distilled water. Describe the process taking place in the diagram. What could happen to the cell if this continues, and why? (2 marks)

A doctor tells a patient with diabetes that sugar levels in the blood are high and are not entering the body cells properly. Explain how this relates to diffusion.  (1 mark)

A doctor tells a patient with diabetes that sugar levels in the blood are high and are not entering the body cells properly. Explain how this relates to diffusion.  (1 mark)

Melissa was making a drink and put just one tiny drop of bright red food coloring into a clear glass of still water. She noticed that even without stirring, after a little while, the whole glass of water turned light pink. Explain why the red color spread out all by itself.  (2 marks)

Melissa was making a drink and put just one tiny drop of bright red food coloring into a clear glass of still water. She noticed that even without stirring, after a little while, the whole glass of water turned light pink. Explain why the red color spread out all by itself.  (2 marks)

A student puts one tea bag in hot water and another in cold water. The hot one changes colour faster. What process is happening, and how does temperature affect it? (2 marks)

A student puts one tea bag in hot water and another in cold water. The hot one changes colour faster. What process is happening, and how does temperature affect it? (2 marks)

A student puts one tea bag in hot water and another in cold water. The hot one changes colour faster. What process is happening, and how does temperature affect it? (2 marks)

A vet explained that giving animals too much salty water can damage their cells. Based on what you know about osmosis, explain what might happen to an animal’s red blood cells if the animal drinks salty water. (2 marks)

A veterinary explained that giving animals too much salty water can damage their cells. Based on what you know about osmosis, explain what might happen to an animal’s red blood cells if the animal drinks salty water. (2 marks)

A veterinary explained that giving animals too much salty water can damage their cells. Based on what you know about the importance of osmosis in living things, explain what might happen to an animal’s red blood cells if the animal drinks salty water.(2 marks)

A veterinary explained that giving animals too much salty water can damage their cells. Based on what you know about the importance of osmosis in living things, explain what might happen to an animal’s red blood cells if the animal drinks salty water.(2 marks)