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What is one main function of a cell membrane?
What is one main function of a cell membrane?
To separate the inner contents of the cell from the outside
Which movement process requires the passing of substances down a concentration gradient?
Which movement process requires the passing of substances down a concentration gradient?
DIffusion and osmosis
What is the main difference between diffusion and active transport?
What is the main difference between diffusion and active transport?
Diffusion transports substances down a concentration gradient while active transport goes against the concentration gradient and requires energy and protein carriers to transport the substance across the membrane
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CHAPTER 3: Movement across a membrane
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This is a set of detailed and efficient notes concerning chapter 3 in the IGCSE biology course, which deals with the transport of dissolved substances across a semi-permeable membrane. The document provides clear explanations and diagrams about the 4 main transport types and also explains what happe...
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