Question

the passive process in which water moves through the plasma membrane from an area of high water concentration to an area of low water concentration is called ______.
options: osmosis, active transport, facilitated diffusion, simple diffusion, i dont know yet

Explanation:

To solve this, we analyze each option:

• Osmosis: Defined as the passive movement of water across a semi - permeable membrane (like the plasma membrane) from a region of high water concentration (low solute concentration) to a region of low water concentration (high solute concentration). This matches the description in the question.
• Active transport: Requires energy (ATP) and moves substances against their concentration gradient, so it's not passive and not the answer.
• Facilitated diffusion: Involves the movement of substances (not specifically water in this context - and it uses carrier proteins for substances other than water's specific osmotic movement) down their concentration gradient, but it's for larger or charged molecules, not the specific water movement described.
• Simple diffusion: Is the movement of small, non - polar molecules (like oxygen, carbon dioxide) down their concentration gradient, not water's movement across the membrane in the way described.

Answer:

A. osmosis