Cell Processes

Front

What is diffusion?

Back

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

Front

What is osmosis?

Back

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

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of a cell, causing water to enter the cell and the cell to expand.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of a cell, causing water to leave the cell and the cell to shrivel.

Front

What is an isotonic solution?

Back

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

Front

What does selectively permeable mean?

Back

Selectively permeable refers to a membrane that allows certain substances to pass through while blocking others.

Front

What organelle is responsible for controlling what enters and exits the cell?

Back

The cell membrane controls what enters and exits the cell.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is the sodium-potassium pump?

Back

The sodium-potassium pump is a type of active transport that moves sodium ions out of the cell and potassium ions into the cell.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water leaves the cell, causing it to shrink or shrivel.