Fast and Curious: Cell Transport

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically through diffusion or osmosis.

Front

What is the purpose of passive transport?

Back

The purpose of passive transport is to reach equilibrium, where the concentration of molecules is the same inside and outside the cell.

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 they are evenly distributed.

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 active transport?

Back

Active transport is the movement of molecules across a cell membrane using energy, often against a concentration gradient.

Front

What is endocytosis?

Back

Endocytosis is a type of active transport where a cell engulfs large particles or liquids by wrapping its membrane around them.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels materials by vesicles fusing with the cell membrane.

Front

What does it mean for a cell to reach equilibrium?

Back

A cell reaches equilibrium when the concentration of a substance is the same inside and outside the cell, resulting in no net movement of that substance.

Front

What is a semipermeable membrane?

Back

A semipermeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of any molecules, while osmosis specifically refers to the movement of water molecules.