Terms in this set (7) extent of the concentration gradient. greater the difference in concentration, the more rapid the diffusion. mass of the molecules diffusing. temperature. solvent density. solubility. surface area and thickness of the plasma membrane. distance travelled.
What factors affect rate of diffusion?
The greater the difference in concentration, the quicker the rate of diffusion. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion.
Which of the following factors affects the rate of diffusion quizlet?
Increased surface area increases the rate of diffusion, whereas a thicker membrane reduces it. The greater the distance that a substance must travel, the slower the rate of diffusion.
What are the five factors that affect the rate of diffusion?
Several factors affect the rate of diffusion of a solute including the mass of the solute, the temperature of the environment, the solvent density, and the distance traveled.
What factors affect the rate of diffusion and osmosis quizlet?
What factors affect the rate of diffusion? Concentration gradient, thickness of exchange surface, the surface area.
Which factor does not affect rate of diffusion?
Complete answer: The electrical charges of the diffusion particles are the only factor that does not have an effect on the rate at which diffusion occurs.
What are the three factors that affect diffusion?
Concentration gradient, size of the particles that are diffusing, and temperature of the system affect the rate of diffusion.
Does pH affect the rate of diffusion?
In general, a decrease in diffusion coefficient was observed with increasing pH.
What affects the rate of diffusion of solutes quizlet?
It takes more energy to move a large object than it foe to move a small one, so small molecules diffuse more quickly than larger ones. Atoms and molecules jiggle faster at higher temperature, so they collide more often. This, diffusion occurs more quickly at higher temperatures.
How does temperature affect the rate of diffusion experiment?
When temperature increases, the kinetic energy of the particles has increased. Therefore, at higher temperatures, the rate at which fluid particles will diffuse is faster than at lower temperatures. In the experiment, the food coloring will diffuse faster in the hot water than in the cold water.
How do these factors alter diffusion rates?
Why do these factors alter diffusion rates? Heat makes molecules gain energy and collide more making diffusion happen faster. more pressure means more molecule colliding means faster diffusion. Large molecules need more energy so they take longer to diffuse.
What are two variables that affect the rate of diffusion?
Two variables that affect the rate of diffusion are the size or molecular weight of the molecule that is diffusing across the membrane, and the concentration gradient itself.
Which one or more physical factors affect the rate of diffusion quizlet?
Terms in this set (4) Size of concentration gradient. Faster at larger gradients. Mass of transported molecules. Smaller diffuses faster. Membrane surface area. Faster over a larger membrane area. Temperature. Increase in temperature and diffusion rate.
How does size affect the rate of diffusion quizlet?
Larger the surface area, the the higher the rate of diffusion. How does the thickness of membranes affect the rate of diffusion? The thinner the membrane, the higher the rate of diffusion. Small polar molecules pass through at a faster rate than large polar molecules.
What factors affect the rate of diffusion of one gas through another?
Diffusion is spontaneous mixing of the particles of two substances caused by their random motion. What factors affect the rate of diffusion of one gas through another? Size, shape, concentration, charge, lipid solubility, and temperature are the factors affecting diffusion of gases.
What is the rate of diffusion?
The rate of diffusion, dn/dt, is the change in the number of diffusing molecules inside the cell over time. Since the net movement of diffusing molecules depends on the concentration gradient, the rate of diffusion is directly proportional to the concentration gradient (dC/dx) across the membrane.
Which factor does not affect the rate of evaporation?
The evaporation rate is dependent on certain variables such as temperature, surface area, wind speed, etc. But not depend on the mixture of absolute heavy impurities. The evaporation process will increase as the wind speed increases.
What are the 3 types of diffusion?
The three types of diffusion are – simple diffusion, osmosis and facilitated diffusion. (i) Simple diffusion is when ions or molecules diffuse from an area of high concentration to an area of low concentration. (ii) In osmosis, the particles moving are water molecules.
Does rate of diffusion change over time?
3. Does the rate of diffusion change over time? Yes, because the rate of diffusion is faster until the equilibrium is reached; after equilibrium the rate of diffusion begins to decrease.….
Where does diffusion occur in the body?
The diffusion of chemicals and gases in and out of cells is an essential activity in human organs. Diffusion of oxygen and carbon dioxide gas occurs in the lungs. Diffusion of water, salts, and waste products occurs in the kidneys.
Does polarity affect the rate of diffusion?
Polarity does affect diffusion but only in the case where diffusion is occurring across the cell membrane. The cell membrane has a hydrophobic region that repels polar molecules. And so nonpolar molecules can diffuse into the cell membrane but polar ones cannot.
What role do porins play in diffusion?
Porins are beta barrel proteins that cross a cellular membrane and act as a pore, through which molecules can diffuse. Unlike other membrane transport proteins, porins are large enough to allow passive diffusion, i.e., they act as channels that are specific to different types of molecules.
What does not affect the rate of simple diffusion across a membrane?
The amount of energy available for transport molecules does not affect the rate of diffusion. This is because diffusion is a passive process.
Which cell has the fastest rate of diffusion?
Answer: Cell with surface area ratio 3:2 will have faster rate of diffusion. Explanation: because, rate of diffusion is directly proportional to surface area .
What factors increase the rate of diffusion across a membrane quizlet?
What are the factors that affect the rate of diffusion? The rate of diffusion is increased when: The distance is decreased. The surface area is increased. The concentration difference (concentration gradient) is increased.
How does size and shape affect the rate of diffusion?
If the cell gets bigger, there will be less surface area compared to the area within the cell. If less of it comes in contact, less of it can cross the cell membrane. So — the greater the size of the cell, the lower the surface to area ratio and the harder it is for anything to diffuse out of the cell.