Cell Transport

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special proteins. It moves molecules from an area of high concentration to an area of low concentration.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel large particles or substances by enclosing them in a vesicle that fuses with the cell membrane, releasing the contents outside the cell.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, relying on the concentration gradient.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy (usually from ATP) to move molecules from an area of low concentration to an area of high concentration.

Front

What is osmosis?

Back

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

Front

What is diffusion?

Back

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

Front

What is 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.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in large particles or substances by engulfing them in a vesicle formed from the cell membrane.

Front

What are protein pumps?

Back

Protein pumps are membrane proteins that actively transport ions or molecules across the cell membrane against their concentration gradient, using energy.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.