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12. Which is required for cells to pump ions against the concentration gradient?

A. ATP
B. Osmosis
C. Phospholipids
D. Water

1 Answer

2 votes

Answer:

The correct option is A) ATP

Step-by-step explanation:

Some ions or molecules tend to move in the cell along a concentration gradient. Such types of movement is known as passive transport. In passive transport, molecules move from a higher concentration to a lower concentration. Such kind of movement doesn't require energy.

Other kinds of molecules or ions move against the concentration gradient i.e from a lower concentration to a higher concentration. Energy is required for these process to occur.The energy used is in the form of ATP.

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