Osmosis and Diffusion

What is diffusion?

• when molecules move

• when molecules move from a high concentration to a low.

• no movement

• molecules move everywhere

Tags

NGSS.MS-PS1-4

Where is there a low concentration of dye?

• at the bottom of cup

• in the color

• at the top of cup

• no concenteraion gradient

Tags

NGSS.MS-PS1-2

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Tags

NGSS.MS-ESS2-4

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

Tags

NGSS.MS-LS1-2

A person would never have pure water put into their veins in a hospital because their cells would...

• Shrink/Dehydrate
• Expand

Tags

NGSS.HS-LS1-3

Permeable means

• things can pass through
• the concentration levels are different
• it is permanent
• things are stuck

The diffusion of water through a semi-permeable membrane is called?

• Osmosis
• Cell wall
• Diffusion
• Respiration

Where is there a low concentration of perfume?

• in the bottle
• on the hand
• in the room
• in the top

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 
  

Tags

NGSS.MS-LS1-2

What a cell needs to transport particles by active transport?

• Sun
• Wind
• Energy
• Channels

Tags

NGSS.MS-LS1-2