Osmosis

What is the significance of osmosis in living organisms?

• Osmosis is essential for photosynthesis in plants.

• Osmosis is crucial for maintaining cell shape, nutrient absorption, and waste removal in living organisms.

• Osmosis helps in the formation of proteins in cells.

• Osmosis is responsible for the movement of air in and out of the lungs.

What is a semi-permeable membrane?

• A barrier that allows all molecules to pass through freely.

• A barrier that allows certain molecules, like water, to pass through while blocking others.

• A solid wall that prevents any molecules from passing through.

• A flexible membrane that can change its permeability based on temperature.

What is the role of osmosis in plant cells?

• Osmosis helps maintain turgor pressure in plant cells, keeping them rigid and upright.

• Osmosis allows nutrients to be absorbed from the soil into the roots.

• Osmosis is responsible for photosynthesis in plant cells.

• Osmosis prevents water loss during transpiration.

What is osmosis?

• The movement of water molecules through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

• The process of diffusion of solutes across a semi-permeable membrane.

• The movement of water molecules from an area of higher solute concentration to an area of lower solute concentration.

• The absorption of nutrients by plant roots from the soil.

What is turgor pressure?

• The pressure exerted by the fluid inside the central vacuole of a plant cell against the cell wall.

• The pressure exerted by the air inside a balloon when inflated.

• The pressure that causes a plant to wilt when it lacks water.

• The pressure exerted by the roots of a plant to absorb nutrients from the soil.

How does temperature affect the rate of osmosis?

• Higher temperatures decrease the kinetic energy of water molecules, slowing down osmosis.

• Higher temperatures increase the kinetic energy of water molecules, which can speed up the rate of osmosis.

• Temperature has no effect on the rate of osmosis.

• Lower temperatures increase the rate of osmosis by making water molecules move faster.

What happens to animal cells in an isotonic solution?

• Animal cells in an isotonic solution swell and burst.

• Animal cells in an isotonic solution remain balanced and do not change in size.

• Animal cells in an isotonic solution shrink and become dehydrated.

• Animal cells in an isotonic solution become rigid and inflexible.

What is solute concentration?

• The amount of solute present in a given volume of solvent.

• The total volume of a solution.

• The temperature at which a solution boils.

• The color of the solute in a solution.

How do water molecules move during osmosis?

• Water molecules move from an area of lower concentration to an area of greater concentration.

• Water molecules move randomly without any specific direction.

• Water molecules move from an area of greater concentration to an area of lower concentration.

• Water molecules do not move during osmosis.

What occurs when a cell is placed in distilled water?

• The cell shrinks due to water loss.

• The cell remains unchanged in size.

• The cell takes in water and may swell or burst.

• The cell becomes more rigid and less permeable.