Demonstrating Diffusion practice exercise 3

 A farmer noticed that leaves of some maize plants near a footpath were turning yellow. After testing, they found poor oxygen supply in the soil. What process was likely affected in the plant roots?  (1 mark)

 A farmer noticed that leaves of some maize plants near a footpath were turning yellow. After testing, they found poor oxygen supply in the soil. What process was likely affected in the plant roots?  (1 mark)

 A farmer noticed that leaves of some maize plants near a footpath were turning yellow. After testing, they found poor oxygen supply in the soil. What process was likely affected in the plant roots?  (1 mark)

Study the image below of a glass of water with a tea bag inside. Explain why the colour from the tea bag spreads and what this shows about movement of materials in living things.  (2 marks)

Study the image below of a glass of water with a tea bag inside. Explain why the colour from the tea bag spreads and what this shows about movement of materials in living things.  (2 marks)

Study the image below of a glass of water with a tea bag inside. Explain why the colour from the tea bag spreads and what this shows about movement of materials in living things.  (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)

After running, a person breathes heavily to take in more oxygen. How does oxygen move from the lungs into the blood? (1 mark)

After running, a person breathes heavily to take in more oxygen. How does oxygen move from the lungs into the blood? (1 mark)

During a class experiment, Mary placed a cube of sugar in water and left it. Later, she found sugar evenly spread in the water. What process caused this and how is it similar to what happens in living cells?  (2 marks)

During a class experiment, Mary placed a cube of sugar in water and left it. Later, she found sugar evenly spread in the water. What process caused this and how is it similar to what happens in living cells?  (2 marks)

During a class experiment, Mary placed a cube of sugar in water and left it. Later, she found sugar evenly spread in the water. What process caused this and how is it similar to what happens in living cells?  (2 marks)

During a class experiment, Mary placed a cube of sugar in water and left it. Later, she found sugar evenly spread in the water. What process caused this and how is it similar to what happens in living cells?  (2 marks)

During a class experiment, Mary placed a cube of sugar in water and left it. Later, she found sugar evenly spread in the water. What process caused this and how is it similar to what happens in living cells?  (2 marks)

A teacher sprays perfume in one corner of a closed room. Minutes later, students at the back can smell it. Using the image below, explain what process is being shown and how it relates to diffusion in the human body.  (2 marks)

A teacher sprays perfume in one corner of a closed room. Minutes later, students at the back can smell it. Using the image below, explain what process is being shown and how it relates to diffusion in the human body.  (2 marks)

A teacher sprays perfume in one corner of a closed room. Minutes later, students at the back can smell it. Explain what process was being illustrated and how it relates to diffusion in the human body.  (2 marks)

A teacher sprays perfume in one corner of a closed room. Minutes later, students at the back can smell it. Explain what process was being illustrated and how it relates to diffusion in the human body.  (2 marks)

A piece of smoked fish is placed inside a closed box. Later, when the box is opened, the smell quickly escapes and spreads through the air. Explain the process responsible for this and relate it to gas exchange in animals.  (2 marks)

A piece of smoked fish is placed inside a closed box. Later, when the box is opened, the smell quickly escapes and spreads through the air. Explain the process responsible for this and relate it to gas exchange in animals.  (2 marks)

A piece of smoked fish is placed inside a closed box. Later, when the box is opened, the smell quickly escapes and spreads through the air. Explain the process responsible for this and relate it to gas exchange in animals.  (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)

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)

An open bottle of kerosene is placed in a room as shown below. After some time, people entering the room can smell it. Explain what process is taking place and how it applies to diffusion in cells.   (2 marks)

An open bottle of kerosene is placed in a room as shown below. After some time, people entering the room can smell it. Explain what process is taking place and how it applies to diffusion in cells.   (2 marks)

An open bottle of kerosene is placed in a room as shown below. After some time, people entering the room can smell it. Explain what process is taking place and how it applies to diffusion in cells.   (2 marks)

An open bottle of kerosene is placed in a room as shown below. After some time, people entering the room can smell it. Explain what process is taking place and how it applies to diffusion in cells.   (2 marks)