passive and active transport

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, moving from an area of high concentration to an area of low concentration.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane using energy, moving from an area of low concentration to an area of high concentration.

Front

Define 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 does isotonic mean?

Back

Isotonic refers to a solution where the concentration of solutes is the same on both sides of a membrane, resulting in no net movement of water.

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.

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-4

Front

What does permeable mean?

Back

Permeable means that a membrane allows certain substances to pass through it.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move molecules across the cell membrane.

Front

What is endocytosis?

Back

Endocytosis is an active transport process where a cell engulfs material from the outside environment, forming a vesicle.

Front

What is exocytosis?

Back

Exocytosis is an active transport process where a cell expels materials in vesicles to the outside environment.

Tags

NGSS.HS-LS2-3

Front

What are protein pumps?

Back

Protein pumps are membrane proteins that use energy to transport ions or molecules against their concentration gradient.