Demonstrating Diffusion practice exercise 1

Describe the process by which glucose enters the bloodstream after digestion in the small intestine.  (2 marks)

Describe the process by which glucose enters the bloodstream after digestion in the small intestine.  (2 marks)

Describe how diffusion facilitates absorption of glucose from the intestines.  (2 marks)

Describe how diffusion facilitates absorption of glucose from the intestines.  (2 marks)

Explain how diffusion is involved in the movement of oxygen from the soil into the root hair cells of a plant. (2 marks)

Explain how diffusion is involved in the movement of oxygen from the soil into the root hair cells of a plant. (2 marks)

Explain how diffusion is involved in the movement of oxygen from the soil into the root hair cells of a plant. (2 marks)

Explain how diffusion is involved in the movement of oxygen from the soil into the root hair cells of a plant. (2 marks)

Explain how oxygen moves from the alveoli into the blood capillaries during gas exchange in the lungs.  (2 marks)

Explain how oxygen moves from the alveoli into the blood capillaries during gas exchange in the lungs.  (2 marks)

Study the image below showing alveoli and capillaries. Describe how carbon dioxide is removed from the blood based on the process illustrated.  (2 marks)

Study the image below showing alveoli and capillaries. Describe how carbon dioxide is removed from the blood based on the process illustrated.  (2 marks)

Observe the image of a red  dye spreading in clear gel. What process does this image show?  (1 mark)

Observe the image of a red  dye spreading in clear gel. What process does this image show?  (1 mark)

The diagram below shows a red dye spreading in clear gel. What process does this image show?  (1 mark)

Observe the image of a tea bag placed in hot water. What process is taking place as the tea spreads in the water?  (1 mark)

Observe the image of a tea bag placed in hot water. What process is taking place as the tea spreads in the water?  (1 mark)

The image below shows a tea bag placed in hot water. What process is taking place as the tea spreads in the water?  (1 mark)

What process allows oxygen to enter the blood in human lungs?  (1 mark)

What process allows oxygen to enter the blood in human lungs?  (1 mark)

What process causes perfume sprayed in one corner of the room to be smelled all around?  (1 mark)

What process causes perfume sprayed in one corner of the room to be smelled all around?  (1 mark)

Which process helps carbon dioxide enter leaf cells for photosynthesis?  (1 mark)

Which process helps carbon dioxide enter leaf cells for photosynthesis?  (1 mark)

The image below shows a plant leaf with arrows entering and leaving through stomata. Using the diagram, describe how diffusion helps in gas exchange in plants.   (2 marks)

The image below shows a plant leaf with arrows entering and leaving through stomata. Using the diagram, describe how diffusion helps in gas exchange in plants.   (2 marks)

The image below shows a plant leaf with arrows entering and leaving through stomata. Using the diagram, describe how diffusion helps in gas exchange in plants.   (2 marks)

The image below shows a plant leaf with arrows entering and leaving through stomata. Using the diagram, describe how diffusion helps in gas exchange in plants.   (2 marks)