Diffusion

What term is used to describe the movement of substances across a cell membrane without the expenditure of energy?

• Facilitated transport

• Diffusion

• Passive transport

• Active transport

In passive transport, materials move...

• With the help of carrier proteins

• Without carrier proteins

• Spontaneously

• Using ATP

In passive transport, materials move from...

• High to low concentration

• Low to high concentration

• High temperature to low temperature

• Low temperature to high temperature

What is facilitated diffusion?

• Movement of molecules from high to low concentration

• Diffusion of substances directly through the phospholipid bilayer

• Diffusion of substances through the cell membrane via proteins

• Movement of water from high to low concentration

When do material stop moving by passive transport?

• When the cell runs out of ATO

• When the materials have reached equilibrium

• When there is a concentration gradient

• When the cell membrane is saturated with the material

A material can only pass through the cell membrane if its permeable

• True

• False

One type of protein is responsible for transporting all of the insoluble materials that the cell needs

• True

• False

What are the two types of passive transport?

• Osmosis and facilitated diffusion

• Osmosis and active transport

• Diffusion and osmosis

• Diffusion is the only type of passive transport

Facilitated diffusion involves the expenditure of energy in the form of ATP.

• True

• False

The concentration gradient is NOT the only gradient which impacts the movement of molecules and ions

• True

• False