Understanding Cellular Transport Processes

Front

What is osmosis?

Back

The movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.

Front

What is passive transport?

Back

The movement of molecules across a cell membrane without using energy.

Tags

NGSS.MS-LS1-2

Front

What is facilitated diffusion?

Back

Movement of molecules through a membrane without energy, using a protein channel.

Tags

NGSS.MS-LS1-2

Front

What is diffusion?

Back

The process involving the movement of molecules from an area of high concentration to an area of low concentration.

Front

What is endocytosis?

Back

The process by which cells internalize substances from their external environment by engulfing them.

Tags

NGSS.MS-LS1-7

Front

What is the role of a semi-permeable membrane in osmosis?

Back

It allows the passage of water molecules while restricting the movement of solutes.

Front

How does active transport differ from passive transport?

Back

Active transport requires energy to move molecules against their concentration gradient, while passive transport does not.

Front

What are the types of passive transport?

Back

Osmosis, diffusion, and facilitated diffusion.

Front

What is the concentration gradient?

Back

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

Front

What is the significance of protein channels in facilitated diffusion?

Back

They provide a pathway for specific molecules to cross the membrane without using energy.