Osmosis Pratice

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

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

• Osmosis
• Cell wall
• Diffusion
• Respiration

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 
  

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

Osmosis is what type of transport?

• Active

• Passive

Osmosis needs _____ energy.

• zero

• a lot of

• 10 kilowatts

• some

Osmosis is the movement of

• water from high concentration to low concentration

• water from low concentration to high concentration

• sugar from high concentration to low concentration

• sugar from low concentration to high concentration

_____ is the amount of a given substance contained in a solution

• concentration

• equilibrium

• diffusion

• facilitated diffusion

If the dots represent sugar which is more concentrated

• Inside the cell

• Outside the cell

• Neither they are equal (equilibrium)

If the dots represent sugar, what direction will water flow?

• Into the cell

• Out of the cell

• Into and out equally (equilibrium)