Movement of Materials in and out of the cell practice exercise 1

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)

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 child is seen blowing air into a balloon repeatedly and becomes tired. Explain how diffusion is involved in this situation and why it is important to living things using the image below.  (2 marks)

A child is seen blowing air into a balloon repeatedly and becomes tired. Explain how diffusion is involved in this situation and why it is important to living things using the image below.  (2 marks)

A visking tube filled with salt solution is placed in a beaker of pure water as shown below. After some time, the level of solution inside the tube rises. What process is responsible for this and how does it demonstrate osmosis in living things?   (2 marks)

A visking tube filled with salt solution is placed in a beaker of pure water as shown below. After some time, the level of solution inside the tube rises. What process is responsible for this and how does it demonstrate osmosis in living things?   (2 marks)

A visking tube filled with salt solution is placed in a beaker of pure water as shown below. After some time, the level of solution inside the tube rises. What process is responsible for this and how does it demonstrate osmosis in living things?   (2 marks)

A visking tube filled with salt solution is placed in a beaker of pure water as shown below. After some time, the level of solution inside the tube rises. What process is responsible for this and how does it demonstrate osmosis in living things?   (2 marks)

Explain what happens when raw cassava sticks are placed in pure water and in salty water overnight. How does osmosis cause the changes observed.  (4 marks)

Explain what happens when raw cassava sticks are placed in pure water and in salty water overnight. How does osmosis cause the changes observed.  (4 marks)

Explain what happens when raw cassava sticks are placed in pure water and in salty water overnight. How does osmosis cause the changes observed.  (4 marks)

A child with diarrhea is given oral rehydration solution (ORS). Explain how osmosis helps the child feel better.  (1 mark)

A child with diarrhea is given oral rehydration solution (ORS). Explain how osmosis helps the child feel better.  (1 mark)

A child with diarrhea is given oral rehydration solution (ORS). Explain how osmosis helps the child feel better.  (1 mark)

A child with diarrhea is given oral rehydration solution (ORS). Explain how osmosis helps the child feel better.  (1 mark)

Using the diagram below, answer the questions: a) Which beaker demonstrates osmosis and which one shows diffusion? (1 mark)b) What is the main visible difference in how the substances are moving? (1 mark)c) Which setup requires a membrane and why? (1 mark)

Using the diagram below, answer the questions: a) Which beaker demonstrates osmosis and which one shows diffusion? (1 mark)b) What is the main visible difference in how the substances are moving? (1 mark)c) Which setup requires a membrane and why? (1 mark)

A learner sets up two experiments: one showing oxygen gas spreading in a room, and another with water moving into a dry grapes. She says both are examples of diffusion. Is she correct? Explain your answer using the key differences between the two processes. (1 mark)

A learner sets up two experiments: one showing oxygen gas spreading in a room, and another with water moving into a dry grapes. She says both are examples of diffusion. Is she correct? Explain your answer using the key differences between the two processes. (2 marks)

A learner sets up two experiments: one showing oxygen gas spreading in a room, and another with water moving into a dry grapes. She says both are examples of diffusion. Is she correct? Explain your answer using the key differences between the two processes. (2 marks)

The image below shows coloured gas slowly spreading in a closed container. What classroom concept is being demonstrated?

The image below shows coloured gas slowly spreading in a closed container. What classroom concept is being demonstrated?  (1 mark)

The image below shows coloured gas slowly spreading in a closed container. What classroom concept is being demonstrated?  (1 mark)

Observe the image below showing coloured gas slowly spreading inside a closed container. This is similar to when someone opens a bottle of perfume in one corner of a classroom and the scent reaches the other end without any fan. What concept is being demonstrated?    (1 mark)

Observe the image below showing coloured gas slowly spreading inside a closed container. This is similar to when someone opens a bottle of perfume in one corner of a classroom and the scent reaches the other end without any fan. What concept is being demonstrated?    (1 mark)

Observe the image below showing coloured gas slowly spreading inside a closed container. This is similar to when someone opens a bottle of perfume in one corner of a classroom and the scent reaches the other end without any fan. What concept is being demonstrated?    (1 mark)

Observe the diagram showing two beakers. Beaker A has a wilted leaf placed in pure water. Beaker B has a wilted leaf placed in salty water. After some time, only the leaf in Beaker A becomes firm. What caused this difference?

The diagram below shows two beakers. Beaker A has a wilted leaf placed in pure water. Beaker B has a wilted leaf placed in salty water. After some time, only the leaf in Beaker A becomes firm. What caused this difference? (1 mark)

The diagram below shows two beakers. Beaker A contains a wilted leaf placed in pure water. Beaker B contains a wilted leaf placed in salty water. After some time, only the leaf in Beaker A becomes firm. What does this demonstrate about the importance of osmosis in living things?  (1 mark)

The diagram below shows two beakers. Beaker A contains a wilted leaf placed in pure water. Beaker B contains a wilted leaf placed in salty water. After some time, only the leaf in Beaker A becomes firm. What does this demonstrate about the importance of osmosis in living things?  (1 mark)

The diagram below shows two beakers. Beaker A contains a wilted leaf placed in pure water. Beaker B contains a wilted leaf placed in salty water. After some time, only the leaf in Beaker A becomes firm. What does this demonstrate about the importance of osmosis in living things?  (1 mark)

The diagram below shows two beakers. Beaker A contains a wilted leaf placed in pure water. Beaker B contains a wilted leaf placed in salty water. After some time, only the leaf in Beaker A becomes firm. What does this demonstrate about the importance of osmosis in living things?  (1 mark)

Look at the diagram. Why does carbon dioxide move from the air space into the cells?

Study the diagram below. Why does carbon dioxide move from the air space into the cells? (1 mark)

Study the diagram below. Why does carbon dioxide move from the air space into the cells? (1 mark)

Study the diagram below. Why does carbon dioxide move from the air space into the cells? (1 mark)

What process is shown in the image that helps the plant absorb essential nutrients?

During a science experiment, students watered one plant with a solution of dissolved mineral salts and left another plant in dry soil. After several days, the watered plant developed greener, healthier leaves, while the dry plant showed no improvement. What process is shown in the image below that explains why the watered plant absorbed nutrients and grew better?  (1 mark)

During a science experiment, students watered one plant with a solution of dissolved mineral salts and left another plant in dry soil. After several days, the watered plant developed greener, healthier leaves, while the dry plant showed no improvement. What process is shown in the image below that explains why the watered plant absorbed nutrients and grew better?  (1 mark)

During a science experiment, students watered one plant with a solution of dissolved mineral salts and left another plant in dry soil. After several days, the watered plant developed greener, healthier leaves, while the dry plant showed no improvement. What process is shown in the image below that explains why the watered plant absorbed nutrients and grew better?  (1 mark)

In a kitchen experiment, a learner places mango slices in a concentrated sugar solution. After some time, they appear soft and shrunken. What explains this change?

In a kitchen experiment, a learner places fresh mango slices into a container filled with concentrated sugar solution. After several hours, the mango slices appear soft and shrunken. What explains this change?   (1 mark)

In a kitchen experiment, a learner places fresh mango slices into a container filled with concentrated sugar solution. After several hours, the mango slices appear soft and shrunken. What explains this change?   (1 mark)

In a kitchen experiment, a learner places fresh mango slices into a container filled with concentrated sugar solution. After several hours, the mango slices appear soft and shrunken. What explains this change?   (1 mark)

Study the diagram showing two plant cells: one in distilled water and one in a concentrated sugar solution.Which cell would appear plasmolysed and why?

Study the diagram below showing two plant cells: one in distilled water and one in a concentrated sugar solution. Which cell would appear plasmolysed and why? (1 mark)

Study the diagram below showing two plant cells: one in distilled water and one in a concentrated sugar solution. Which cell would appear plasmolysed and why? (1 mark)

Study the diagram below showing two plant cells: one in distilled water and one in a concentrated sugar solution. Which cell would appear plasmolysed and why? (1 mark)

Study the diagram below showing two plant cells: one in distilled water and one in a concentrated sugar solution. Which cell would appear plasmolysed and why? (1 mark)

Look at the diagram of two animal cells below: Cell A is in distilled water, Cell B is in salty water. Which cell will shrink, and why?

The diagram below shows two animal cells: Cell A is in distilled water, Cell B is in salty water. Which cell will shrink, and why? (1 mark)

The diagram below shows two animal cells: Cell A is in distilled water, Cell B is in salty water. Which cell will shrink, and what does this show about the importance of osmosis in living things?  (1 mark)

The diagram below shows two animal cells: Cell A is in distilled water, Cell B is in salty water. Which cell will shrink, and what does this show about the importance of osmosis in living things?  (1 mark)