Question

in a hypertonic solution, water flows through aquaporins embedded in the pl which of the following? active transport osmosis diffusion facilitated diffusion

Explanation:

• Active transport: Requires energy (e.g., ATP) and moves substances against a concentration gradient. Water movement through aquaporins in a hypertonic solution is not active transport as it doesn't directly use energy in this context.
• Osmosis: Osmosis is the diffusion of water across a semi - permeable membrane. Aquaporins are channels that facilitate this water movement. In a hypertonic solution (higher solute concentration outside the cell), water will move out of the cell (where solute concentration is lower) through aquaporins. This is a form of osmosis.
• Diffusion: Refers to the movement of solutes (not specifically water) from an area of higher concentration to lower concentration. While osmosis is a type of diffusion (of water), the term "diffusion" alone is too general compared to "osmosis" when specifically talking about water movement.
• Facilitated diffusion: Applies to the movement of solutes (not water in the context of the term's typical usage in contrast to osmosis) through transport proteins. Water movement through aquaporins is more specifically described as osmosis rather than general facilitated diffusion of a solute.

Answer:

Osmosis