Cell 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, requiring energy (ATP).

Front

What is Passive Transport?

Back

Passive Transport is the movement of molecules across a cell membrane without the use of energy, occurring along the concentration gradient (from high to low concentration).

Front

What is Osmosis?

Back

Osmosis is a specific type of passive transport that involves the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What role does ATP play in Active Transport?

Back

ATP provides the energy required for Active Transport to move substances against their concentration gradient.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of molecules during transport.

Front

What is a protein channel?

Back

A protein channel is a type of transport protein that allows specific molecules to pass through the cell membrane, facilitating passive transport.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of solutes from high to low concentration, while osmosis specifically refers to the movement of water across a membrane.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane without energy.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass while blocking others, crucial for maintaining homeostasis in cells.

Front

What is an example of Active Transport?

Back

An example of Active Transport is the sodium-potassium pump, which moves sodium ions out of the cell and potassium ions into the cell against their concentration gradients.