Question

topic 2: cell physiology & tissues
7
identify whether each method of membrane transport is passive or active by dragging the label to the correct box.
1.45 points
labels
diffusion
movement up a concentration gradient
movement down a concentration gradient
movement of molecules from an area of high concentration to an area of low concentration
receptor - mediated endocytosis
drop zones
passive (1/2)
active (2/2)
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references

Explanation:

Passive transport does not require energy and moves substances down a concentration gradient. Active transport requires energy and moves substances against (up) a concentration gradient. Diffusion is the movement of molecules from high to low - concentration (down a concentration gradient) and is passive. Movement down a concentration gradient and movement of molecules from high to low concentration are passive processes. Movement up a concentration gradient requires energy and is active. Receptor - mediated endocytosis is an active process as it requires energy to engulf substances.

Answer:

Passive: Diffusion, Movement down a concentration gradient, Movement of molecules from an area of high concentration to an area of low concentration
Active: Movement up a concentration gradient, Receptor - mediated endocytosis