Osmosis Model

1 collaborator

WHAT IS DIFFUSION AND OSMOSIS?

Diffusion is the transport of molecules from one region to another region. During this process, the molecules follow a simple rule of going from high concentration to low concentration. This is because due to the higher concentration of molecules, the molecules have a higher chance of bumping into each other and going in a different direction. As the molecules move from the high concentrated region to the low concentrated region, over time, the low concentrated region becomes the high concentrated region and the vice versa. Then, the process repeats and the cycle continues. Water has the ability to move in and out of cell membranes without the assistance of any protein channels. This diffusion of molecules in and out of cells is known as osmosis.

HOW IS OUR MODEL DEMONSTRATIVE OF OSMOSIS AND DIFFUSION?

In our net logo model, the patches represent the cell membrane and they are permeable to the blue agents which represent the water molecules. All the molecules are spawned in one side of the model. As they spread about randomly, they bump into each other which then changes the direction of each molecule. Eventually, the molecules will move across the membrane and then back, continuing the cycle. Our manipulated variable is the number of water molecules. Since all of the molecules are spawn in one side of the cell membrane, this also means that our manipulated variable is the difference of concentration. As the difference of concentration goes up, the rate of osmosis goes up as well.

Comments and Questions

Please start the discussion about this model! (You'll first need to log in.)

Click to Run Model

breed [water waters]

to setup
  clear-all
  reset-ticks
  ask patches with [pycor = 0] [set pcolor yellow]
  set-default-shape water "circle"
  create-water (num-water) [
   setxy 0 8 fd random 5
    set color blue
  ]
end 

to go
  move-waters
  ask turtles [
    repel-too-close-neighbor
    repel-too-close-patch
  ]
 tick
end 

to move-waters
  ask water [forward 1]
  wait 0.1
end 

to repel-too-close-neighbor
  let too-near one-of other turtles in-radius .05
  if too-near != nobody [
    face too-near
    rt 180
  ]
end 

to repel-too-close-patch
 let too-near one-of other patches in-radius 1
  if too-near != nobody [
    face too-near
  ]
end

There are 2 versions of this model.

		Uploaded by	When	Description	Download
		Spencer Clark	over 8 years ago	Added Moniter	Download this version
		Spencer Clark	over 8 years ago	Initial upload	Download this version

Attached files

File	Type	Description	Last updated
Osmosis Model.png	preview	Preview for 'Osmosis Model'	over 8 years ago, by Spencer Clark	Download

This model does not have any ancestors.

This model does not have any descendants.

NetLogo