THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Passive
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Active
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Detailed explanation-1: -1 Lipid diffusion (simple diffusion) Passive transport requires no energy input, as compounds are able to move freely across the membrane based only on a favourable concentration gradient (Figure 1.11).
Detailed explanation-2: -Passive transport does not require the cell to expend any energy and involves a substance diffusing down its concentration gradient across a membrane.
Detailed explanation-3: -Simple diffusion does not require energy: facilitated diffusion requires a source of ATP. B. Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concentration gradient.
Detailed explanation-4: -Answer and Explanation: The correct answer is option C. Endocytosis is a form of active transport.