AP Biology Unit 2 Review

Front

What is the formula to calculate the water potential (Ψ) of a cell?

Back

Ψ = Ψp + Ψs, where Ψp is pressure potential and Ψs is solute potential.

Front

What type of solution causes a plant cell to swell due to water entering?

Back

Hypotonic solution.

Front

What does the Endosymbiotic Theory propose about the evolution of eukaryotic cells?

Back

Eukaryotic cells could have evolved from prokaryotic cells.

Front

True or False: As a cell increases in size, it becomes easier for it to transport nutrients and waste across its membrane.

Back

False.

Front

What observation supports the idea that mitochondria evolved from prokaryotic cells?

Back

Mitochondria are surrounded by a double membrane.

Front

Define solute potential (Ψs).

Back

The measure of the tendency of water to move into a solution due to the presence of solutes.

Front

What is pressure potential (Ψp)?

Back

The physical pressure on a solution, which can affect the overall water potential.

Front

What happens to a plant cell in a hypertonic solution?

Back

The cell loses water and may undergo plasmolysis.

Front

What is the significance of the double membrane in mitochondria?

Back

It supports the endosymbiotic theory and indicates a complex evolutionary history.

Front

How does a cell maintain homeostasis?

Back

By regulating the movement of substances across its cell membrane.