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 from an area of high concentration to an area of low concentration.

Front

What is Osmosis?

Back

Osmosis is the passive transport of water molecules across a selectively permeable membrane.

Front

What role does the cell membrane play in homeostasis?

Back

The cell membrane controls what substances may enter or leave the cell, helping to maintain homeostasis.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of any molecules from high to low concentration, while osmosis specifically refers to the movement of water.

Front

What is a carrier protein?

Back

A carrier protein is a type of protein that transports specific substances across a cell membrane.

Front

What is the significance of ATP in Active Transport?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses carrier proteins to help move molecules across the membrane.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in concentration of a substance between two areas.