CB - Cell membranes Word Scramble
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Question | Answer |
The cell membrane is made of which 2 substances? | Proteins and (phospho)lipids |
What is the function of the cell membrane? | To control what substances enter and exit the cell |
What term describes a membrane that allows some substances to pass across but not others? | selectively permeable |
What are 2 examples of substances that could pass into a cell by diffusion? | oxygen, glucose |
What specific molecule passes into a cell by osmosis? | water |
Which type of transport does not require energy? | passive transport |
Which type of transport requires energy? | active transport |
Define diffusion. | The movement of molecules from an area of high concentration to an area of low concentration, down a concentration gradient. |
Define osmosis. | The movement of water molecules from an area of high water concentration to an area of low water concentration down a concentration gradient, through a selectively permeable membrane. |
Define active transport. | The movement of ions from an area of low concentration to an area of high concentration, against a concentration gradient. |
How would you describe a plant cell that had lost water due to osmosis? | plasmolysed |
How would you describe a plant cell that had gained water due to osmosis? | turgid |
What would happen to an animal cell in pure water? | swell and burst |
What would happen to an animal cell in a strong sugar solution? | shrink |
What cell structure in plant cells prevents the cell from bursting? | cell wall |
What cell structure in plant cells is where excess water is stored? | vacuole |
If a plant cell was placed in pure water would it gain or loose weight? | Gain weight |
Created by:
StNiniansHS
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