Active and Passive Review Unit 2

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to another solution, leading to the movement of water out of cells.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to another solution, causing water to move into cells.

Front

What is an isotonic solution?

Back

An isotonic solution has an equal concentration of solutes compared to another solution, resulting in no net movement of water.

Front

Define selectively permeable membrane.

Back

A selectively permeable membrane allows certain substances to pass through while blocking others.

Front

What is turgor pressure?

Back

Turgor pressure is the pressure exerted by the fluid in a plant cell's central vacuole against the cell wall, helping maintain the cell's shape.

Front

What happens to a cell in a hypertonic environment?

Back

In a hypertonic environment, a cell loses water, shrinks, and may become dehydrated.

Front

What happens to a cell in a hypotonic environment?

Back

In a hypotonic environment, a cell gains water, swells, and may burst.

Front

What is the role of the central vacuole in plant cells?

Back

The central vacuole stores water, nutrients, and waste products, and helps maintain turgor pressure.

Front

Why is salt water recommended for a sore throat?

Back

Salt water creates a hypertonic environment that dehydrates bacteria, helping to reduce inflammation.

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.