Cell Transport: Osmosis & Diffusion

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

During osmosis

• water moves from high to low concentration
• large or oddly shaped molecules move across a cell membrane
• water moves when energy is used
• proteins are built

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 to a area of low concentration 
  

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

The picture is an example of...

• active tranport
• passive transport
• diffusion
• osmosis

An animal cell placed in a hypertonic (salty) solution will ___________

• Shrink (get smaller)

• Swell up (grow bigger)

• Stay the same

Osmosis

• diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration

• the diffusion of particles from an area of high concentration to an area of low concentration

• diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration

• the diffusion of particles from an area of low concentration to an area of high concentration

HYPO means...

• Low

• High

• Equal

• Fat

ISO means...

• Low

• A lot

• Equal

• Mammal