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What do cells need to move materials opposite the concentration gradient?
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What is concerntration gradient?
As used in the process of diffusion, the concentration gradient is the graduated difference in concentration of a solute within a solution (as expressed per a unit distance). Molecules tend to move from areas of greater concentration to areas of lesser concentration. i.e. down the gradient.
Which term describes the difference in the substance across a cells membrane?
Concentration Gradient.. :)
How does a cell maintain differences in concentration of certain ions on either side of the plasma membrane?
Cells maintain unequal concentrations of ions on opposite sides of a cell membrane through active transport.
Which term describes the differene in the conentrations of a substance across a cells membrane?
concentration gradient
How does active trasport differ from passive trasport?
active transport is when cells must move materials in an opposite direction against concentration gradient. it requires energy. passive doesn't require energy. like a balloon , when u blow it up it requires energy and when u left the air go out it doesn't.
What is required when cells must move materials against a concentration gradient?
Active transport which requires ATP.
What kind of concentration forms whenever there is a difference in concentration between one place and another?
noThe correct answer if you are dealing with cells is concentration gradient
What is osmosis diffusion?
(WATER CELLS ONLY)Water cells move from a higher concentration gradient (more water cells) to a lower concentration gradient (less water cells) through a partially permeable membrane (allows certain substances in and out) and goes with the concentration gradient (high -> low)
Which term describes the difference in the concentration of a substance across a cells membrane?
concentration gradient
What is moving down the concentration gradient in all cells?
All small molecules can move down the concentration gradient as water O2, CO2 etc.
What is a characteristic that diffusion and active transport have in common and both process?
Both involve the transport of materials across the cell membrane. Active transport goes against the concentration gradient and requires ATP. Diffusion goes with the concentration gradient, or from high to low concentration, and does not require ATP. ATP is the standard unit of energy in cells.
What is concerntration gradient?
As used in the process of diffusion, the concentration gradient is the graduated difference in concentration of a solute within a solution (as expressed per a unit distance). Molecules tend to move from areas of greater concentration to areas of lesser concentration. i.e. down the gradient.
Which term describes the difference in the substance across a cells membrane?
Concentration Gradient.. :)
How does a cell maintain differences in concentration of certain ions on either side of the plasma membrane?
Cells maintain unequal concentrations of ions on opposite sides of a cell membrane through active transport.
Most water enters and leaves cells by?
Water moves between cells by osmosis, down a concentration gradient.
Which term describes the differene in the conentrations of a substance across a cells membrane?
concentration gradient
How does active trasport differ from passive trasport?
active transport is when cells must move materials in an opposite direction against concentration gradient. it requires energy. passive doesn't require energy. like a balloon , when u blow it up it requires energy and when u left the air go out it doesn't.
