7.3 Cell Boundaries and Transport

Front

What is a hypertonic solution?

Back

A hypertonic solution has more solutes outside the cell than inside, causing water to move out of the cell.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water moves out to balance the solute concentration.

Front

What is a hypotonic solution?

Back

A hypotonic solution has less solutes outside the cell than inside, causing water to move into the cell.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells and may burst as water enters to balance the solute concentration.

Front

What is an isotonic solution?

Back

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

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 passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What is phagocytosis?

Back

Phagocytosis is a type of endocytosis where the cell engulfs large particles or cells, often referred to as 'cell eating'.

Front

What is pinocytosis?

Back

Pinocytosis is a type of endocytosis where the cell takes in liquid and small particles, often referred to as 'cell drinking'.

Front

What role do cell membranes play in transport?

Back

Cell membranes regulate the movement of substances in and out of the cell, maintaining homeostasis.