Active transport requires a specialized carrier molecule, a protein, and the expenditure of cellular energy; transfer across membranes can therefore occur against a concentration gradient.
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The transport of molecules across the cell membrane without …
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What requires the expenditure of cellular energy?
Active transport requires specialized carrier proteins and the expenditure of cellular energy. Carrier proteins allow chemicals to cross the membrane against a concentration gradient or when the phospholipid bilayer of the membrane is impermeable to a chemical (Fig. 1).
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What processes requires cellular energy?
Answer and Explanation: Active Transport is the type of transport that uses cellular energy. Active transport is the movement of ions and molecules by the ATP-powered pumps, against their concentration gradients (from lower concentrations to higher concentrations) across the plasma membrane of a cell.
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Which process requires energy expenditure?
Molecules and ions can be moved against their concentration gradient, but this process, called active transport, requires the expenditure of energy (usually from ATP).
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What requires the expenditure of energy?
Transportation in Cells: Passive transport does not require energy whereas active transport requires an expenditure of energy from the cells.
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Which type of transport requires cellular energy?
Active transport requires energy for the process by transporting molecules against a concentration or electrochemical gradient.
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What requires the expenditure of ATP?
ATP is consumed for energy in processes including ion transport, muscle contraction, nerve impulse propagation, substrate phosphorylation, and chemical synthesis. These processes, as well as others, create a high demand for ATP.
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What cellular process requires the greatest expenditure of cellular energy?
So, the correct answer is ‘Active transport’.
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Which process requires energy expenditure quizlet?
Active transport requires the expenditure of energy, typically ATP.
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Which process requires the expenditure of cellular energy?
Active transport requires a specialized carrier molecule, a protein, and the expenditure of cellular energy; transfer across membranes can therefore occur against a concentration gradient.
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