Diffusion and Osmosis

What is Diffusion

• A strange word

• Movement of particles

• Movement of animals

• Life

Tags

NGSS.MS-PS1-4

Osmosis is:

• The movement of water molecules from an area of high concentration to an area of lower concentration through a fully permeable membrane

• The movement of water molecules from an area of high water potential to an area of lower water potential through a semipermeable membrane

• Movement of water from an area of low concentration to high concentration

• A strange word

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

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport

Permeable means

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

Where is there a high concentration of water?

• in the flower
• cannot be determined by picture.
• in the vase
• in the leaves

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of

• Osmosis
• Diffusion
• Equilibrium

Tags

NGSS.HS-LS1-3