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Factors affecting Diffusion

Posted by Rudolphtests on September 11, 2012 at 2:50 PM

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Categories: Discuss how molecule size and temperature affect diffusion.

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12 Comments

Reply Jesseca White
5:21 PM on September 11, 2012 
Molecuel size can affect the process of diffusion because many of the particles are small enough to fit through the "filters" within the cell whle others that are too large must go through the cell channel. The bigger the molecule or particle is, the slower the diffusion rate process is going to be. The way temperature effects the diffusion process is that an increase in temperature will increase the rate of diffusion. A decrease in the temperature will slow down the rate because the hotter the temperature is, the faster the molecules move.
Reply @keal @damu
8:54 PM on September 11, 2012 
According to the scientific world, both molecule size and temperature affect diffusion. Molecule size determines whether a cell goes through the simple or facilitated diffusion. With macromolecules facilitated diffusion occurs with the aid of carrier proteins. The smaller the molecule the faster the diffusion occurs. The higher the temperature the faster the rate of diffusion will be within a cell's phospholipid bilayer.
iim done ....
Reply Steven Cormier
8:55 PM on September 11, 2012 
"Im all like Wait..Hol up.. Please let me go first" The size of the molecule can effect the diffusion by its size, if it the molecule is small enough it can just pass through the plasma member but if its to big to just slip though, the molecule have to pass through the channels. The smaller the molecule is the faster the diffusion rate process will be. IF the temp is high then the diffusion process will be fast and a low temp will slow the process.
Reply Jonothon Smith
9:44 PM on September 11, 2012 
In scientific theory, two of many factors that affect diffusion are molecule size and temperature. With molecule size it depends on how easy or difficult it would be for the molecules to pass through the membrane. The smaller the molecule the easier it will be to transport through the selectively permeable membrane. If it too big, it will need to pass through a channel to get to the other side. With temperature, if it is too hot the molecules will move very fast to spread out and get their own space as quick as they can. If the temperature is colder, the molecules will slow down and the rate of diffusion will be a longer process.
Reply Miracle Mills
10:16 PM on September 11, 2012 
Temperature affects diffusion by speeding or slowing the process down, as the molecules will move faster in hotter temps. than they would in cooler ones. Molecule size affects diffusion because a molecule may be too large to simple move across the membrane itself, as done in simple diffusion, which means that it needs help or to be facilitated. Facilitated diffusion is the the movement of molecules that are too large to move across the membrane on their own by using the aid of channel proteins. The proteins allows a passage way for the molecules however the protein are selective about what they allow in and out the cell.
Reply Alexis McDonald
11:17 PM on September 11, 2012 
Molecule size affects the rate of diffusion because if the heavier particles move slower than the light ones. For instance if a molecule is small than it can easily glide through the plasma membrane but if it is more than simple diffusion can handle it may need to be facilitated. When the temperature is high than the rate of diffusion speeds up.
Reply Lindsey Cullars III
12:40 PM on September 12, 2012 
The size of particles and molecules passing through the semipermeablr membrane highly effects the rate and quality of diffusion. With smaller molecules, some are just small enough to pass through the spaces, with greater sizes a channel must be used in order to pass. Temperature can also be helpful or detrimental to the rate of diffusion, given that the higher the temperature the more collisons occur therefore diffusion occurs faster and vice versa.
Reply Keyana Moulton
4:41 PM on September 12, 2012 
Molecule size affects diffusion by the bigger the molecule the harder it will be for it to be diffused by the membrane. If the molecule is smaller the molecule would diffuse at a faster rate, then if it was bigger. The temperature also affects the rate of diffusion by the warmer the temperature diffusion will occur faster because the temperature will allow the molecules to speed up. Therefore the diffusion of the molecules will be faster. When the temperature is cooler, the molecules will move slower. Therefore making diffusion slower because of the motion of the molecules.
Reply Jamese Washington
4:44 PM on September 12, 2012 
Several factors affect how fast a molecule will diffuse. The first of these is the kinetic energy of the molecule, which is most frequently measured as the temperature of the system. Molecules in a system at a higher temperature will have more energy and will move faster, and hence diffuse faster, than molecules of the same type in a low-temperature system. The size of the molecule also affects how rapidly it will diffuse. At the same temperature, smaller molecules will move more rapidly than larger molecules because it takes more energy to get the larger molecule moving. Other factors include any charges on the molecule (positive or negative) and the nature of the material that the molecules are moving through.
Reply Ashley Wrushen
7:57 PM on September 12, 2012 
There are many factors that affect diffusion. The two factors I will address are how molecule size and temperature affect diffusion. In terms of molecule size, a large molecule requires a channel in order to enter the semipermeable membrane. While a small molecule in contrast is tiny enough to pass through the membrane without the help of a channel passage. When looking at temperature, the higher the temperature, the quicker diffusion will occur. On the other hand, the lower the temperature, the slower diffusion will occur. All in all, there are many factors that affect diffusion and the above are just two examples of the several factors there are.
Reply Tashina Jemmott
8:32 PM on September 12, 2012 
There are many factors that affect the process of diffusion. One of the factors diffusion depend on is the size of the molecule. If the molecule is smaller, it will have an easier time passing through the membrane as oppose to a bigger size molecule, which would have a much harder time to pass through. In addition, if the molecule has such a difficulty in passing through the membrane, it will call for help or in other terms, switch to facilitated diffusion. In regards to diffusion, temperature determines the speed in which the cell diffuses. If the temperature is high, the molecules are able to move around faster. Lower temperatures however, will decrease the speed of diffusion.
Reply Joshua Galbreath
9:46 PM on September 12, 2012 
Molecule size affects diffusion because the shorter the size of the molecule is, the quicker the diffusion process will be. Temperature also affects the rate of diffusion. The higher the temperature, the higher the energy rate of the molecules will be (which means they will move around the molecule quicker) which leads to the higher rate of diffusion.