Passive Transport: Diffusion

Passive Transport: Diffusion

There are two ways substances get into a cell:

• Passive Transport: Does NOT require energy

• Active Transport: DOES require energy

Multiple Choice

Passive Transport requires energy

• True

• False

Passive Transport:

• Does not require energy

• Moves substances from areas of high concentration to low concentration

• May or may not require the use of a channel protein

Multiple Choice

Passive transport requires the use of a protein.

• True

• False

There are several forms of passive transport:

• Simple Diffusion

• Facilitated Diffusion

• Osmosis

Multiple Select

Which of the following are forms of passive transport?

• Osmosis

• Simple Diffusion

• Active Transport

• Facilitated Diffusion

Simple Diffusion:

• Does not use a channel protein; substances travel across the lipid bilayer

• Moves small, none charged molecules from high concentration to low concentration

• Oxygen and Carbon Dioxide

Multiple Choice

Simple diffusion is used to move:

• Glucose

• Water

• Carbon Dioxide

• Na+, Cl-

Multiple Choice

You can not move large, charged substances using simple diffusion.

• True

• False

Facilitated Diffusion:

• Requires the use of carrier proteins to move substances

• Moves large, charged substances from high concentration to low concentration

• Some substances use the protein as a channel

• Some substances are moved by the protein

• Glucose, Na+, Cl-

Multiple Choice

Facilitated diffusion differs from simple diffusion in that :

• it requires energy

• it requires a protein

• it requires the phospholipid bilayer

Multiple Choice

Which of the following would NOT enter/leave a cell using facilitated diffusion?

• Glucose

• oxygen

• Na+

• Cl-

Osmosis:

• The diffusion of water

• Moves water from high concentration to low concentration

• Water uses special channels called aquaporins to enter the cell

• Water will move towards the side of the membrane with more solute 9salt, sugar)

• 
  

Multiple Choice

The diffusion of water is called:

• diffusion

• active transport

• osmosis

• simple diffusion

Multiple Choice

During passive transport, molecules:

• don't move

• move for low to high

• move from high to low

Multiple Choice

How would oxygen enter/leave a cell?

• simple diffusion

• osmosis

• facilitated diffusion

• active transport

Multiple Choice

Requires energy

• Active Transport

• Passive Transport

Multiple Choice

Moves substances from areas of low concentration to high concentration.

• Osmosis

• Simple Diffusion

• None of these

• Facilitated Diffusion