Osmosis GCSE

Gaseous exchange happens because of...

• Osmosis

• Respiration

• Diffusion

• Semi-permeable membranes

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Osmosis is the diffusion of _____ across a selectively permeable membrane.

• food
• air
• water
• oxygen

 In the given scenario what will happen?  An egg with a dissolved shell is placed in pure water for 48 hours.

• Water will move in and out of the cell equally, and the cell with neither shrink nor swell.
• The egg will gain water and swell.
• The egg will lose water and shrink.

Tags

NGSS.MS-LS1-2

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

• Stay the same
• Shrink- get smaller
• Swell- get bigger

Tags

NGSS.MS-LS1-5

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

• cell membrane
• respiration
• osmosis
• diffusion

The picture  is an example of _________________.

• isotonic
• diffusion
• osmosis
• active transport

In a solution, salt is considered the _______.

• solvent
• solute
• solution

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

If there is 5 percent water inside a cell and 5 percent water outside a cell

• more water will move inside the cell

• more water will move outside the cell

• There will be no net movement of water, it moves into and out of the cell at the same time.

Tags

NGSS.MS-LS1-2

The cell below is in a _____________ solution.

• Hypertonic
• Hypotonic
• Isotonic

Tags

NGSS.HS-LS1-3