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Does facilitated diffusion move a substance following its concentration gradient with the aid of a carrier protein?
Wiki User
∙ 13y ago
No.
All diffusion, including facilitated diffusion, results in a substance spreading out, so there is a general (net) movement away from higher concentrations to lower ones.
"Facilitated" just means that special proteins in the cell membrane let substances through that could not get through any other part of the membrane. It's like wanting to get the other side of a wall. A door facilitates your progress!
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoYes. All diffusion goes from a high concentration to a low concentration. The only thing that makes facilitated diffusion different is that it requires a channel protein to transport the molecules.
Wiki User
∙ 12y agoYes. Diffusion is the movement of particles from areas of high to areas of low concentration. This occurs through random motions, and will happen spontaneously.
Wiki User
∙ 13y agoIt is a form of Passive Transport and intestinal cells move down its concentration gradient through a transport protein.
Wiki User
∙ 11y agoNo. It is the opposite. Diffusion is the movement of particles from where they are in high concentration to where they are in low concentration.
Wiki User
∙ 13y agoyes.
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What is the definition of osmosis?
The four main kinds of passive transport are diffusion, facilitated diffusion, filtration and osmosis. Passive transport is the movement of a substance across a cell membrane with its concentration gradient (from high to low concentration) and it uses no energy. Osmosis is a special term used when water is the substance being moved.
Give 2 examples of passive transport?
Passive transport is when molecules pass freely through the membrane moving from the higher concentration area to the region of lower concentration. Three examples of this are diffusion, osmosis, and 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.)
What movement of the substances through a cell membrane against a concentration gradient requires energy?
no because it is a form of passive transport. only active transport requires energy. facilitated diffusion just means that it cant be just absorbed through the membrane, it must go through specific chanels or be helped by transport proteins. but because facilitated diffusion moves from higher to lower concentrations, it requires no energy.
When a substance moves across the plasma membrane along a concentration gradient at a rate faster than would be expected by simple diffusion alone but without the expenditure of metabolic energy?
It is called facilitated diffusion. It is a type of passive transport.
What is facilitated diffusion across the phospholipid membrane?
Facilitated diffusion is the movement a substance from high concentration to low concentration across a membrane through a transporter protein or channel
The spreading out of a substance from an area of high concentration to an area of low concentration is called .?
diffusion
What is the definition of osmosis?
The four main kinds of passive transport are diffusion, facilitated diffusion, filtration and osmosis. Passive transport is the movement of a substance across a cell membrane with its concentration gradient (from high to low concentration) and it uses no energy. Osmosis is a special term used when water is the substance being moved.
Give 2 examples of passive transport?
Passive transport is when molecules pass freely through the membrane moving from the higher concentration area to the region of lower concentration. Three examples of this are diffusion, osmosis, and active transport.
What is The net movement of particles of a substance from a high concentration to a low concentration?
DIFFUSION DIFFUSION
What substance crosses the cell membrane by facilitated diffusion?
a sodium ion
What substance is most commonly transported during facilitated diffusion?
Glucose
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.)
What movement of the substances through a cell membrane against a concentration gradient requires energy?
no because it is a form of passive transport. only active transport requires energy. facilitated diffusion just means that it cant be just absorbed through the membrane, it must go through specific chanels or be helped by transport proteins. but because facilitated diffusion moves from higher to lower concentrations, it requires no energy.
Movement of a substance down the substance's concentration gradient?
diffusion
Where and when does diffusion occur?
Diffusion occurs when there is a concentration gradient i.e. a substance moves from higher to lower concentration.
When a substance moves across the plasma membrane along a concentration gradient at a rate faster than would be expected by simple diffusion alone but without the expenditure of metabolic energy?
It is called facilitated diffusion. It is a type of passive transport.
