Cell Transport

Front

What is Facilitated Diffusion?

Back

Facilitated Diffusion is the process by which molecules move across the cell membrane from an area of high concentration to an area of low concentration with the help of carrier proteins.

Front

What is Osmosis?

Back

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is Passive Transport?

Back

Passive Transport is the movement of substances across a cell membrane without the use of energy, typically from high to low concentration.

Front

What is Active Transport?

Back

Active Transport is the movement of substances against their concentration gradient, from low to high concentration, requiring energy (ATP).

Front

What is Endocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them in a membrane-bound vesicle.

Front

What is Exocytosis?

Back

Exocytosis is the process by which cells expel substances by vesicles fusing with the cell membrane and releasing their contents outside the cell.

Front

What is the difference between Passive and Active Transport?

Back

Passive Transport does not require energy and moves substances from high to low concentration, while Active Transport requires energy to move substances from low to high concentration.

Front

What role do carrier proteins play in cell transport?

Back

Carrier proteins assist in the movement of specific molecules across the cell membrane, particularly during facilitated diffusion.

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 the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space, driving the movement of molecules during diffusion.