Question

(ii) State three factors that influence the movement of molecules through membranes

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Answer 1

Three factors that influence the movement of molecules through membranes are concentration gradient, size and charge of molecules, and temperature.

Step-by-step explanation:

Three factors that influence the movement of molecules through membranes are:

1. Concentration gradient: The difference in concentration of molecules on either side of the membrane affects the direction and rate of movement. Molecules tend to move from areas of higher concentration to areas of lower concentration.
2. Size and charge: The size and charge of molecules determine whether they can pass through a membrane. Small and uncharged molecules can easily diffuse through, while larger or charged molecules may require specialized transport mechanisms.
3. Temperature: Higher temperatures generally increase the kinetic energy of molecules, making them move faster and promoting diffusion across the membrane.

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