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What moves up a concentration gradient and requires a carrier?
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∙ 11y ago
Primary Active Transport.
Wiki User
∙ 11y ago
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What does it means if a substance moves down its concentration gradient?
If a substance moves down its concentration gradient, it means that it is moving from an area where it has a high concentration to an area where it has a low concentration. This is known as diffusion.
What is the transport that moves a solute down the concentration gradient?
Simple diffusion
What moves up a concentration gradient?
its active transport because it expands in opp direction and pushes
What is the fundamental difference between carrier proteins that participate in facilitate diffusion and carrier proteins that function as pumps?
facilitated diffusion does not require energy, as it travels from a higher concentration gradient to a lower one(passive transport). Pumps do require energy to function(Active transport). This energy needed is ATP.
Does active transport move from higher to lower concentration?
Active Transport- When molecules move from an area of lower concentration to an area of higher concentrationPassive Transport- When molecules move from an area of higher concentration ot an area of higher concentration (also called diffusion)
Compare and contrast between osmosis and facilitated diffusion?
Osmosis is when a solvent moves from a lower concentration to a higher concentration. Facilitated diffusion is when a solvent moves down the concentration gradient through carrier molecules.
What concentration gradient moves when a low concentration moves from an area of a higher concentration?
The concentration gradient is controlled by Diffusion. This same movement in reverse is known as Osmosis.
What does it means if a substance moves down its concentration gradient?
If a substance moves down its concentration gradient, it means that it is moving from an area where it has a high concentration to an area where it has a low concentration. This is known as diffusion.
When water moves through an area of higher concentration to lower concentration?
When a region of higher concentration to a region of Lower concentration against the gradient which requires Energy is called Active Transport
How does facilitated transport differ from active transport?
Simple diffusion = flow of small molecules ALONG the concentration gradient, does NOT require energy. facilitated diffusion = flow of molecules ALONG the concentration gradient with help of CARRIER PROTIENS or CHANNELS, does NOT require energy active transport= flow of larger or charged molecules AGAINST their concentration gradient, REQUIRES input of ENERGY in the form of ATP.)
Whats the difference between passive transport and active transport?
Active transport requires energy and Passive transport requires no energy.Passive transport is a process which is carried out along the concentration gradient. For example, if the concentration of water is more outside the cell than inside, water will flow into the cell. Simply put, it is actually diffusion which occurs in passive transport and hence, no energy is required.Active transport, however, is carried out against the concentration gradient and hence requires energy. An example of active transport is the uptake of salt by cells through sodium pump.Active transport requires energy and moves particles up their concentration gradient. Passive transport doesn't require energy and moves particles down their concentration gradient.
A non-energy requiring process that moves materials across a cell membrane with the concentration gradient.?
The process of moving materials across the cell membrane without the expenditure of energy is called passive transfer
What does concentration gradient have to do with diffusion of substances across the cell membrane?
concentration gradient moves from high to low until equilibrium is reached.
When a cell membrane protein moves a solute in the opposite direction as the concentration gradient?
as the concentration gradient increases at the solute side. make the question more clear.
Where and when does diffusion occur?
Diffusion occurs when there is a concentration gradient i.e. a substance moves from higher to lower concentration.
What moves solutes against concentration gradient?
The processes that can move a solute against its concentration gradient are active transport. All cells are enclosed by a plasma membrane that is similar in structure and function.
Why are carrier proteins in the cell membrane that are used for active transport called ''pumps''?
Because they remove or bring in a chemical against the gradient.
