Cell transport mechanisms: Movement of a cell or solute against its concentration gradient is called what? Context: Transport occurs from lower to higher concentration and requires metabolic energy (ATP). Choose the correct term.
General Knowledge
Biology
Difficulty: Easy
Choose an option
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AActive transport
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BSimple diffusion
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COsmosis
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DFacilitated diffusion
Answer
Correct Answer: Active transport
Explanation
Given data
- Direction: against the concentration gradient (low → high concentration).
Concept / ApproachTransport uphill requires energy input (often ATP hydrolysis) mediated by pumps/carriers (e.g., Na+/K+-ATPase). This is termed active transport.
ContrastDiffusion/osmosis/facilitated diffusion are passive; they move down gradients and do not require cellular energy.
Final AnswerActive transport.