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What movement of the substances through a cell membrane against a concentration gradient requires energy?
Wiki User
∙ 8y ago
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.
Wiki User
∙ 14y ago
Wiki User
∙ 8y agoThe movement of a substance through a cell membrane against its concentration gradient is called active transport. Primary active transport requires energy, usually in the form of ATP. Secondary active transport makes use of another substance moving down its concentration gradient to pump a substance against its concentration gradient.
Wiki User
∙ 12y agoFacilitated diffusion across a biological membrane requires TRANSPORT PROTEINS and moves a substance DOWN its concentration gradient.
Wiki User
∙ 9y agoFacilitated diffusion across a biological membrane requires energy. Passive diffusion across a cellular membrane does not require any energy from the cell.
Wiki User
∙ 8y agoIt is active transportation. It requires energy of ATP
Wiki User
∙ 11y agofalse
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What is the movement of chemical substances usually across the cell membrane againts a concentration gradient requires cells to energy?
active transport
Movement of water down its concentration gradient?
Diffusion is the movement of water from a higher concentration of water to a lower. Osmosis is a special form which requires a cell membrane.
What are the two things needed for osmosis to take place?
Partially permeable membrane(visking tubing) and water
Compare and contrast active transport and facilitated diffusion-?
Active transport moves solutes against their concentration gradient; facilitated diffusion moves substances down their concentration gradient.
The movement of water across a membrane is termed?
it is called osmosis and it is the net movement of water particles across a semi-permable membrane against the concentration gradient!
How does difference in concentration relate to movement of substances across the membrane?
the concentration gradient will help to bring stuff into the cell and to move stuff out. Osmosis likes to move with the concentration gradient. Moving with a concentration gradient is passive transport and moving against it is active transport
What is the movement of chemical substances usually across the cell membrane againts a concentration gradient requires cells to energy?
active transport
In which type of process do substances move down their concentration gradient across the membrane?
Active transport is a process that removes substances from a cell against the concentration gradient. The molecules move from low concentration to high concentration during this process.
How long does movement occur across a concentration gradient?
As long as there is a concentration gradient. This is because diffusion occurs which is the net movement of substances from a region of high concentration to a region of low concentration.
In diffiusion movement of particles across a membrane is drven by what differences?
In diffusion, the movement of particles across a membrane is driven by an electrochemical gradient-the ion's concentration gradient and the membrane potential. Substances will passively diffuse down their concentration gradient to where they are less concentrated. Since the inside of a cell is negative compared to its outside, the membrane potential will drive the passive transport of cations into the cell and anions out of the cell due to electrostatic attractions.
Movement of water down its concentration gradient?
Diffusion is the movement of water from a higher concentration of water to a lower. Osmosis is a special form which requires a cell membrane.
What is the movement of small molecule across a cell membrane up its concentration gradient called?
eflux
What is the energy source for co-transport?
the movement of one of the transported substances down its concentration gradient
What are the two things needed for osmosis to take place?
Partially permeable membrane(visking tubing) and water
What is the movement of water through a selectively permeable membrane?
The movement of water through a selectively permeable membrane is called diffusion. Water will always diffuse down a concentration gradient, from high solute concentration to low solute concentration.
The movement of electrons down a concentration gradient via electron transport membrane is used to generate what?
ATP.
What is the process that moves particles from areas of higher concentration?
The answer is is OSMOSIS the spontaneous net movement of water across a membrane from a region of low concentration to a solution with a high concentration, down a solute concentration gradient.
