UCEA 4.1 Biology Diffusion and osmosis Year 9

Diffusion only happens in..

• Solids and liquids
• Liquids and gases
• Gases
• All states of matter

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

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

• Osmosis
• Cell wall
• Diffusion
• Respiration

Tags

NGSS.MS-LS1-3

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

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

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

A person should never drink salty water because their cells would

• shrink
• expand

Tags

NGSS.HS-LS1-3

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

Tags

NGSS.MS-LS1-3