SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It requires energy.
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It requires a membrane.
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It moves particles down the concentration gradient.
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It moves particles against the concentration gradient.
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Detailed explanation-1: -During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP).
Detailed explanation-2: -Active transport occurs across the plasma membrane against the concentration gradient from their lower to higher concentration. It requires ATP. So it is an energy dependent process.
Detailed explanation-3: -In facilitated transport, also called facilitated diffusion, material moves across the plasma membrane with the assistance of transmembrane proteins down a concentration gradient (from high to low concentration) without the expenditure of cellular energy.
Detailed explanation-4: -So, the correct option is ‘True’.