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Essentially, the thinner the phospholipid bi-layer the higher the rate of diffusion as the molecules have less distance to travel before passing into the cells cytoplasm.
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The rate of diffusion through a semipermeable membrane will be lowest when?
The rate of diffusion through a semipermeable membrane will be lowest when temperatures are low. Lower temperatures decrease the energy of the molecules, which in turn decreases the rate of diffusion.
How does concentration affect the rate of diffusion?
the concentration of saline affects the rate of diffusion through the process of osmosis and diffusion. try the experiment of the 3 cell membranes
What was the average diffusion rate of urea when the 200 MWCO membrane was used as a barrier?
Once diffusion occurs it does not matter the MWCO of the membrane, but it depends on difference of concentration, as it is said in Fick's first law.
Where within the body does pressure affect diffusion of a substance?
Pressure increases the rate of diffusion. As the pressure on the membrane increase, attempts to enter the lower concentration increase, speeding the diffusion rate.
What is the diffusion of water through the cell membrane is called?
Facilitated Diffusion
The rate of diffusion through a semipermeable membrane will be lowest when?
The rate of diffusion through a semipermeable membrane will be lowest when temperatures are low. Lower temperatures decrease the energy of the molecules, which in turn decreases the rate of diffusion.
What is an example of diffusion in a sentence?
The rate of diffusion is determined by the permeability of the membrane and the concentration gradient.
What does NOT influence the rate of diffusion of a chemical across a plasma membrane?
Besides the concentration of the chemical, the pore size of the plasma membrane, and the osmotic pressure of the cytoplasm - nothing else influences the rate of diffusion of a chemical across a plasma membrane.
How does a selectively permeable membrane affect diffusion?
Factors that influence rate of diffusionThe rate of diffusion depends on the concentration difference across the two sides of the membrane.The rate depends on the permeability of the plasma membrane to the diffusing substance.The rate of diffusion depends on the temperature of the solution.The rate of diffusion through a membrane is also directly proportional to the surface area of the membrane, which can be increased by such adaptations as microvilli.the thickness of the cell membranethe mass of the solute particlesthe difference in the initial concentration gradient*these are also factors that influence the rate of diffusion between extracellular and intracellular environments
What happens in simple diffusion?
In simple diffusion, a substance passes through a membrane without any outside intermediary. The rate of diffusion is based on the force exerted..
How does concentration affect the rate of diffusion?
the concentration of saline affects the rate of diffusion through the process of osmosis and diffusion. try the experiment of the 3 cell membranes
What was the average diffusion rate of urea when the 200 MWCO membrane was used as a barrier?
Once diffusion occurs it does not matter the MWCO of the membrane, but it depends on difference of concentration, as it is said in Fick's first law.
What is the advantage of the presence of on cell membranes?
the membrane has a greater surface area for an increased rate of diffusion
How can some substance diffuse through a cell membrane at faster rate than by diffusion alone?
In facilitated diffusion, there are temporary openings in the cell membrane that enable certain molecules to pass through quickly.
What influences diffusion of ions across the membrane?
distance involved =diffusion at short distances occurs at a greater rate than diffusion at long distances area involved= diffusion over short distance occurs at a greater rate than diffusion over long distances Barriers=thicker barriers slow down rates of diffusion
What is the thickness of the respiratory membrane?
The average thickness of respiratory membrane is 0.2 Mm
Facilitated diffusion required what?
Facilitated diffusion requires membrane proteins
