Cell Transport

Front

What is osmosis?

Back

Osmosis is the process by which water molecules diffuse across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a greater solute concentration outside the cell than inside, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower solute concentration outside the cell than inside, causing water to move into the cell.

Front

What is an isotonic solution?

Back

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

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, often through diffusion or osmosis.

Front

What is active transport?

Back

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

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, the cell loses water and may shrivel due to the higher solute concentration outside.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, the cell gains water and may swell or burst due to the lower solute concentration outside.

Front

What is the role of the cell membrane in transport?

Back

The cell membrane regulates the movement of substances in and out of the cell, maintaining homeostasis.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move substances across the cell membrane.