Question

when studying with a friend for a test, what key points about osmosis would you make sure you tell them? check all that apply. check all that apply osmosis refers to the movement of water along a concentration gradient in osmosis, water moves to equalize solute concentrations on either side of the membrane if osmosis occurs across a membrane, then diffusion is not occurring the movement of water across a membrane can affect the turgor pressure of some cells

Explanation:

1. For the first option: Osmosis is defined as the movement of water molecules across a semi - permeable membrane along the concentration gradient (from an area of higher water concentration to lower water concentration, or lower solute concentration to higher solute concentration). So this statement is correct.
2. For the second option: The driving force of osmosis is to equalize the solute concentrations on both sides of the semi - permeable membrane. Water moves to the side with higher solute concentration to dilute it until the solute concentrations are equal (or the concentration gradient is eliminated as much as possible). So this statement is correct.
3. For the third option: Osmosis is a type of diffusion. Diffusion is the movement of particles from an area of high concentration to low concentration. In osmosis, water molecules (a type of particle) are diffusing across the membrane. So if osmosis occurs, diffusion is also occurring (of water molecules). Thus, this statement is incorrect.
4. For the fourth option: In plant cells, for example, the movement of water across the cell membrane (and cell wall - related structures) affects the turgor pressure. If water enters the cell via osmosis, turgor pressure increases; if water leaves, turgor pressure decreases. So this statement is correct.

Answer:

• Osmosis refers to the movement of water along a concentration gradient
• In osmosis, water moves to equalize solute concentrations on either side of the membrane
• The movement of water across a membrane can affect the turgor pressure of some cells