Water potential exam review

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is water potential?

Back

Water potential ( Ψ ) is the potential energy of water in a system compared to pure water, and it determines the direction of water movement.

Front

What are the components of water potential?

Back

Water potential is composed of two main components: pressure potential ( Ψ p) and solute potential ( Ψ s).

Front

What is pressure potential?

Back

Pressure potential ( Ψ p) is the physical pressure exerted on a solution, which can be positive (in a turgid cell) or zero (in an open container).

Front

What is solute potential?

Back

Solute potential ( Ψ s) is the measure of the effect of solute concentration on the overall water potential, typically negative in nature.

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How do you calculate water potential?

Back

Water potential is calculated using the formula: @@ Ψ = Ψ_p + Ψ_s@@.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is isotonic solution?

Back

An isotonic solution has equal solute concentration inside and outside the cell, resulting in no net movement of water.

Front

What is the pressure potential of a solution in an open container at sea level?

Back

The pressure potential ( Ψ p) for a solution in an open container at sea level is 0.