Question
he movement of water across a cell membrane requires
energy from the cell.
energy from the cell.
Answers
GPT-4o mini
The statement that "the movement of water across a cell membrane requires energy from the cell" is partially accurate but needs clarification.
Water movement across cell membranes is primarily driven by a process called osmosis, which is the diffusion of water molecules from an area of lower solute concentration to an area of higher solute concentration. This passive process does not require energy from the cell because it occurs along the concentration gradient.
However, in some cases, if a cell needs to regulate its internal environment, such as when it must move water against an osmotic gradient, energy in the form of ATP may be required. This typically occurs through specific transport proteins or channels that facilitate the movement of water or solutes, such as aquaporins, or through active transport mechanisms.
In summary, while the passive movement of water through osmosis does not require energy, certain circumstances involving the regulation of water balance in a cell may require energy expenditure.
Water movement across cell membranes is primarily driven by a process called osmosis, which is the diffusion of water molecules from an area of lower solute concentration to an area of higher solute concentration. This passive process does not require energy from the cell because it occurs along the concentration gradient.
However, in some cases, if a cell needs to regulate its internal environment, such as when it must move water against an osmotic gradient, energy in the form of ATP may be required. This typically occurs through specific transport proteins or channels that facilitate the movement of water or solutes, such as aquaporins, or through active transport mechanisms.
In summary, while the passive movement of water through osmosis does not require energy, certain circumstances involving the regulation of water balance in a cell may require energy expenditure.