AP Bio Tonicity, Osmoregulation and Active Transport Review Ch 7

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

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

Calculate the water potential of a solution with a solute potential of -2.5 bars and a pressure potential of 0.9 bars.

• -2.5 bars

• -1.6 bars

• -3.4 bars

• 0.9 bars

An animal cell in an open contain has a solute potential of -4.4 bars. What is its overall water potential?

• 0 bars

• -2.2 bars

• -4.4 bars

• it cannot be determined

A solution contains a concentration of 0.2 M NaCl and is at a temperature of 20C. Which of the following shows the correct setup necessary to calculate the solute potential for this solution?

• ψ_s = -1 (0.2M)(0.0831)(20C)

• ψ_s = -1(0.2M)(0.0831)(293K)

• ψ_s = -2(0.2M)(0.0831)(293K)

• ψ_s = -2 (0.2M)(0.0831)(20C)

Where will the water go?

• Into the cell
• Out of the cell
• Equally in & out - it's isotonic
• There is no water

Tags

NGSS.MS-LS1-2

A blood cell is placed into the jar, as seen. Where will the water go?

• Into the cell
• Out of the cell
• Equally in & out - it's isotonic
• The water is a lie

Tags

NGSS.HS-LS1-3

A zucchini core is soaked in various concentrations of solutions and the percent change in mass is recorded. What is the molar concentration of the zucchini core?

• 0.2 M

• 3.5 M

• 0.35 M

• 0.6 M