Osmosis and its Effects on Plants and Animals

What is osmosis?

• The movement of water molecules from areas of high solute concentration to areas of low solute concentration

• The movement of water molecules from areas of low solute concentration to areas of high solute concentration

• The movement of solute molecules from areas of high water concentration to areas of low water concentration

• The movement of solute molecules from areas of low water concentration to areas of high water concentration

How does salt affect plants?

• Salt increases the freezing point of water, preventing roads from icing over

• Salt dissolves into water and lowers the freezing point, causing plants to die

• Salt increases the solute concentration in plants, leading to water movement into the cells

• Salt decreases the solute concentration in plants, leading to water movement out of the cells

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What happens to red blood cells if they are exposed to pure water?

• They shrink and possibly burst

• They remain unchanged

• They swell and possibly burst

• They become dehydrated

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Why can't a saltwater fish survive in a freshwater tank?

• The freshwater has a higher solute concentration than the saltwater fish cells

• The saltwater fish cells have a higher solute concentration than the freshwater

• The freshwater tank lacks the necessary nutrients for the saltwater fish

• The saltwater fish cannot adapt to the different temperature in the freshwater tank

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What is the role of turgor pressure in plant cells?

• It helps plants grow upright and prevents wilting

• It increases the solute concentration in plant cells

• It decreases the water potential in plant cells

• It regulates the movement of water through aquaporins

What is the formula for calculating water potential?

• Water potential = pressure potential + solute potential

• Water potential = pressure potential - solute potential

• Water potential = pressure potential * solute potential

• Water potential = pressure potential / solute potential

What happens to water movement in osmosis when pressure potential increases?

• Water movement increases

• Water movement decreases

• Water movement remains unchanged

• Water movement stops completely

How do root hair cells absorb water from the soil?

• The soil has a higher solute concentration than the root hair cells

• The root hair cells have a higher solute concentration than the soil

• The root hair cells actively pump water into the soil

• The soil actively pumps water into the root hair cells

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What is the effect of solute potential on water movement in osmosis?

• Higher solute potential increases water movement

• Higher solute potential decreases water movement

• Solute potential has no effect on water movement

• Solute potential stops water movement completely

What is the function of aquaporins in plant cells?

• They facilitate the movement of water across cell membranes

• They help in photosynthesis

• They provide structural support to the cell

• They are involved in cell division