Organisms must transport substances to and from the external environment.
Identify one substance which cells must transport across the cell membrane to support cell functions.
The diagram shows particles of two gases.
Complete the diagram by drawing the arrangement of the gas particles after 1 hour.
Name the process shown in part (b).
Which of the following is an example of simple diffusion?
☐ | A | Movement of water into the root of a plant | |
☐ | B | Movement of mineral ions into the root of a plant | |
☐ | C | Movement of oxygen into the leaf of a plant | |
☐ | D | Movement of glucose into the epithelial cells of villi in the small intestine |
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