Passive transport- Diffusion and facilitated diffusion

Susan sprayed perfume in one corner of the room.  John, who sits across the room and is allergic to perfume, soon begins to sneeze.  Perfume travels across the room by - 

• active transport.

• osmosis.

• endocytosis. 

• diffusion.

What is diffusion?

• when molecules move from a low concentration to a high concentration 
• when molecules move from a high concentration to a low concentration.
• no movement 
• molecules move everywhere

Tags

NGSS.MS-PS1-4

Passive Transport

• Does require cell energy

• Does NOT require cell energy

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

What is the definition of  Selective Permeability?

• The movement of materials across the cell membrane that requires NO ENERGY from the cell.
  
• The movement of materials through (or across) the cell membrane
  
• The ability of the cell membrane to allow some things to pass through while preventing other things from passing through.
• The movement of molecules from an area of high concentration (where the molecules are more crowded together) to a area of low concentration (where molecules are more spread apart)
  

What type of transport uses a transport protein?

• Osmosis

• Facilitated diffusion

What is the name of structure 2?

• Glucosamine

• Phospholipid bilayer

• Hydrophrenous

• Protein channel

Diffusion & Facilitated Diffusion are both __________ transport.

• Passive

• Active

• Easy

• Free

Diffusion & Facilitated Diffusion are both __________ transport.

• Passive

• Active

• Easy

• Free