Membrane Structure and Function (H)

Front

What is the function of a contractile vacuole in protists?

Back

A contractile vacuole helps a protist remove excess water, maintaining homeostasis.

Front

What type of solution is a cell in if it has a lower concentration of solutes compared to its surroundings?

Back

Hypotonic solution.

Front

What happens to a cell placed in a hypotonic solution?

Back

Water moves into the cell, potentially causing it to swell.

Front

What is the effect of placing a cell with a 10% salt solution in distilled water?

Back

The solution inside the cell is hypertonic, so water moves into the cell.

Front

How do molecules move in and out of a cell?

Back

Molecules move in and out of a cell by diffusion.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is homeostasis in the context of cellular function?

Back

Homeostasis is the process by which cells maintain a stable internal environment despite external changes.

Front

What is a semipermeable membrane?

Back

A semipermeable membrane allows certain molecules to pass through while blocking others.

Front

What occurs when a cell is in a hypertonic solution?

Back

Water moves out of the cell, causing it to shrink.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a semipermeable membrane.