How do molecules move that are facilitated by active transport?lower concentration to higher concentrationthrough the cell membranehigher concentration to lower concentration
Question
How do molecules move that are facilitated by active transport?lower concentration to higher concentrationthrough the cell membranehigher concentration to lower concentration
Solution
Molecules that are facilitated by active transport move from a lower concentration to a higher concentration. This process requires energy because it is moving substances against the concentration gradient. The energy is usually provided by ATP (Adenosine Triphosphate).
Here are the steps:
- The molecule to be transported binds to a specific site on the carrier protein on the outside of the cell membrane.
- ATP (Adenosine Triphosphate) provides the energy for the change in shape of the carrier protein.
- The change in shape of the carrier protein allows the molecule to be released on the other side of the membrane.
- The molecule is released into the area of higher concentration.
- The carrier protein returns to its original shape, ready to transport another molecule.
This process allows cells to maintain concentration gradients that are different from their surroundings.
Similar Questions
A process that requires cellular energy to move a substance against its concentration gradient is called:Question 16Select one:a.active transport.b.passive transportc.facilitated transport.d.osmosis.e.diffusion.
Which type of cellular transport moves molecules across the membrane by expending energy?
How does active transport help a cell maintain homeostasis?A.Large molecules flow through channel proteins to keep their concentrations stable.B.Cells are moved to areas where the concentrations of substances are the most stable.C.Carrier proteins use energy to move molecules from an area of lower concentration to one of higher concentration.D.Molecules flow rapidly from an area of higher concentration to one of lower concentration to meet the needs of the cell.
Which statement best describes active transport across the plasma membrane?Movement of molecules from an area of higher concentration to an area of lower concentration, requiring energyMovement of molecules from an area of lower concentration to an area of higher concentration, requiring energyMovement of molecules from an area of higher concentration to an area of lower concentration, not requiring energyMovement of molecules from an area of lower concentration to an area of higher concentration, not requiring energy
The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane-bound carrier proteins is called:Question 17Select one:a.osmosis.b.facilitated diffusion.c.active transport.d.endocytosis.e.exocytosis.
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