Membrane Transport

Front

What are the two types of cell transport?

Back

Passive and Active

Front

The movement of materials that requires energy is called...

Back

active transport

Front

During osmosis, what happens to water?

Back

Water moves from high to low concentration.

Front

What is a difference in concentration across a given space called?

Back

Concentration gradient

Front

Osmosis is what type of transport?

Back

Passive

Front

What is passive transport?

Back

The movement of substances across a cell membrane without the use of energy.

Front

What is active transport?

Back

The movement of substances against their concentration gradient, requiring energy.

Front

Define osmosis.

Back

The diffusion of water across a selectively permeable membrane.

Front

What is a concentration gradient?

Back

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

Front

What role do proteins play in facilitated diffusion?

Back

Proteins help transport substances across the cell membrane without using energy.