Active and Passive Transport

Front

What is Active Transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy in the form of ATP.

Front

What is Passive Transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, moving from an area of higher concentration to an area of lower concentration.

Front

Define Osmosis.

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is Facilitated Diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help molecules that cannot directly diffuse through the membrane to pass through.

Front

What does Selectively Permeable mean?

Back

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

Front

What is Homeostasis?

Back

Homeostasis is the state of steady internal conditions maintained by living organisms, including the regulation of water and solute concentrations.

Front

What role does the Cell Membrane play?

Back

The cell membrane regulates what enters and leaves the cell, maintaining the internal environment.

Front

What is Diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration until equilibrium is reached.

Front

What happens to a cell in a Hypotonic solution?

Back

In a hypotonic solution, water enters the cell, causing it to swell and potentially burst due to increased internal pressure.

Front

What is an Isotonic solution?

Back

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