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The more soluble and diffusible a gas is the lower the pressure gradient required for diffusion to occur?
Robertgeary
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What is is required for diffusion to occur?
A concentration gradient and a (semi-)permeable membrane.
In order for substances to move through the cell membrane what must there be?
For passive diffusion, a concentration gradient which uses pore proteins. For active diffusion, carrier proteins and energy are required.
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.
Is a cell required for passive transport?
No. Diffusion (passive transport) can take place without a cell. For example, if you were to put some coloured food dye into a cup of water, the food dye would spread until it eventually was a uniform colour. This is the process of diffusion, which is the movement of a substance down a concentration gradient. Passive Transport means no energy is required.
What is the process called within the amoeba for which oxygen is required?
It enters through the lipid bilayer (aka cell membrane) by diffusion down a concentration gradient from a high concentration to a low one. This process is continuous. Diffusion occurs naturally because of the kinetic energy in the oxygen particles which allows them to move - this is known as Brownian Motion.
What is is required for diffusion to occur?
A concentration gradient and a (semi-)permeable membrane.
In order for substances to move through the cell membrane what must there be?
For passive diffusion, a concentration gradient which uses pore proteins. For active diffusion, carrier proteins and energy are required.
Does passive transport rely on diffusion or energy?
No it does not..........simple diffusion is nauture
Is it true diffusion is a type of active transport?
Yes except, diffusion is a passive process (no energy is required) whereas active transport requires energy. this is because it is moving UP then concentration gradient whereas diffusion moves DOWN it
A type of transport in which water moves across a membrane and down its concentration gradient is?
"Active Transport" is the answer given but if it is the passive movement then no energy is required so isn't it facilitated diffusion?
Does active transport rely on the process of diffusion?
Yes except, diffusion is a passive process (no energy is required) whereas active transport requires energy. this is because it is moving UP then concentration gradient whereas diffusion moves DOWN it
What is the random movement of molecules and ions down their concentration gradient called?
The random movement of molecules and ions down their concentration gradient (meaning from an area of high concentration to an area of low concentration) is called simple diffusion. Simple diffusion is related to the magnitude of driving force, permeability of the membrane, and surface area.
Which of the following required the most ATP to move the molecule across a plasma membrane?
Ion moving against a concentration gradient
How are osmosis and diffusion similar and how are they different?
Osmosis is where the water or other particles go from an area of higher concentration to an area of lower concentration. This is often against a pressure gradient. This type of reaction involves a process known as ACTIVE TRANSPORT where ATP (adenotriphosphate) is required (energy required).Diffusion is where the products even themselves out through a given solution. This process is done by passive transport, where NO energy or ATP are required.Osmosis is diffusion through a semi-permeable membrane.
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.
How are facilitated diffusion and active transport similar ad how do the differ?
both these processes do the transport against the concentration gradient uh no facilitated diffusion doesnt go against the gradient, the similiarity is that they both use carrier protiens
Is a cell required for passive transport?
No. Diffusion (passive transport) can take place without a cell. For example, if you were to put some coloured food dye into a cup of water, the food dye would spread until it eventually was a uniform colour. This is the process of diffusion, which is the movement of a substance down a concentration gradient. Passive Transport means no energy is required.
