Cell Transport

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy.

Front

Why is passive transport called 'passive'?

Back

It is called 'passive' because it occurs without the expenditure of energy.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What are the types of passive transport?

Back

The main types of passive transport are diffusion, osmosis, and facilitated diffusion.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of transporting molecules across a membrane via channel proteins.

Front

What is the role of channel proteins in facilitated diffusion?

Back

Channel proteins provide a passageway for specific molecules to cross the membrane.

Front

What is the difference between simple diffusion and facilitated diffusion?

Back

Simple diffusion occurs directly through the membrane, while facilitated diffusion requires specific proteins to assist the movement.

Front

What is endocytosis?

Back

Endocytosis is an active transport process where cells engulf substances into a vesicle.

Front

Which type of transport requires energy?

Back

Active transport requires energy to move substances against their concentration gradient.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space.