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What drives the diffusion of substances across a membrane?
The diffusion of substances across a membrane is driven by the concentration gradient, which is the difference in concentration of a substance on either side of the membrane. Substances naturally move from areas of high concentration to areas of low concentration in order to reach equilibrium.
What factors affect the diffusion rate?
Diffusion refers to the process where substances from a highly concentrated area move to a place with a lower concentration. The three factors that affect the rate of diffusion are temperature, concentration gradient and the molecular weight of the substances.
Does some diffusion require energy?
No. Diffusion is a natural occurrence of the net movement of substances from a region of higher concentration to a region of lower concentration (down the concentration gradient).
Moving substances from a lower concentration to a higher concentration requires . passive diffusion facilitated diffusion active transport pinocytosis?
Active transport. This process uses energy to pump substances against their concentration gradient, allowing them to move from areas of lower concentration to higher concentration.
When two substances mix without being shaken or stirred?
When two substances mix without being shaken or stirred, it is likely due to the process of diffusion. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration, leading to the even distribution of the substances.
What factor affects the rate of diffusion?
Diffusion refers to the process where substances from a highly concentrated area move to a place with a lower concentration. The three factors that affect the rate of diffusion are temperature, concentration gradient and the molecular weight of the substances.
What are three physiological processes involved in absorption?
Three physiological processes involved in absorption are diffusion, active transport, and facilitated diffusion. Diffusion is the movement of substances from an area of high concentration to an area of low concentration. Active transport requires energy to move substances against their concentration gradient. Facilitated diffusion involves the use of carrier proteins to help substances move across a cell membrane.
Diffusion is the movement of what substance?
Diffusion is the movement of substances from an area of high concentration to an area of low concentration, resulting in a more uniform distribution.
What name is given to the process by which substances pass into or out of a cell from an area of higher concentration to an area of lower concentration?
diffusion
When substances pass through diffusion they move from areas of their what to areas of their what?
it moves from high to low concentration
What is the difference between diffusion and bulk flow in terms of the movement of substances across a membrane?
Diffusion is the movement of substances from an area of high concentration to low concentration, while bulk flow is the movement of substances in a fluid due to pressure differences. Diffusion occurs passively, while bulk flow requires energy.
How is facilitated diffusion different than normal diffusion?
Diffusion is the movement of molecules or partocles from an area of high concentration to an area of lower concentration, and Facilitated diffusion is when substances difuse across cell membranes more rapidly than you might expect.
