AP Bio Water Potential Questions

What is osmosis?

• Movement of water molecules from an area of lower solute concentration to an area of higher solute concentration through a semipermeable membrane.

• Movement of water molecules from an area of higher solute concentration to an area of lower solute concentration through a semipermeable membrane.

• Movement of solute molecules from an area of higher solute concentration to an area of lower solute concentration through a semipermeable membrane.

• Movement of solute molecules from an area of lower solute concentration to an area of higher solute concentration without a semipermeable membrane.

What would the pressure potential be for a solution in an open container at sea level?

• 0

• 1

• 2

• infinite

Which process involves the movement of water molecules from an area of higher water potential to an area of lower water potential?

• diffusion

• active transport

• filtration

• osmosis

How does solute concentration affect water potential?

• Causes water potential to fluctuate

• Increases water potential

• Decreases water potential

• Has no effect on water potential

What are the two main units of measurement for water potential?

• liters (L)

• bars

• degrees Celsius (°C)

• megapascals (MPa)

How does pressure potential affect water potential?

• Pressure potential decreases water potential.

• Pressure potential increases water potential.

• Pressure potential has no effect on water potential.

• Pressure potential is unrelated to water potential.

What is the role of aquaporins in osmosis?

• Aquaporins prevent the movement of water molecules across cell membranes in osmosis.

• Aquaporins facilitate the movement of water molecules across cell membranes in osmosis.

• Aquaporins have no role in osmosis.

• Aquaporins facilitate the movement of solute molecules across cell membranes in osmosis.

Water is the main _____ of life since so many different types of substances can dissolve within it.

• solute

• solvent

Tags

NGSS.HS-ESS2-5

What is the solute potential of pure, distilled water?

• 0

• 1

• 2

• infinite

What is the formula to calculate water potential?

• Ψ = Ψs + Ψp

• Ψ = Ψs x Ψp

• Ψ = Ψs - Ψp

• Ψ = Ψs / Ψp