Because there is a higher concentration inside the cell then out side ....because it requires energy to move the molecules outside in a different direction then they would normally move, it is like riding a bike up a hill it requires energy.
because transport proteins in the cell membrane "pick up" molecules outside the cell and carry them in by using energy.
Active transport is the movement of molecules from its lower concentration to its higher concentration. Energy is required as it is against diffusion which requires no energy.
Transport proteins use energy to transport substances against their concentration gradient.
no beacause you are a nerd
because
Yes.
facilated diffusion cause when yer active you use energy
Active Transport is carried out in our body cells. Active Transport uses energy to transport materials.
They are used in Facilitated Diffusion, helping to transport ions, macromolecules, and other substances incapable of entering a cell by themselves to cross through the plasma membrane of the cell.
Active Transport is the passage of materials across the membrane through the expenditure of energy. Passive Transport is the passage of materials across the membrane without the expenditure of energy. Bulk Transport is the type of active transport. Diffusion and Osmosis are type of passive transport.
because
Yes, active transport requires carrier proteins in order to function. These require ATP to carry things in and out of the cell.
Carrier Proteins. Some don't require ATP (Facillitated transport) and some do require ATP (Active transport) to change shape.
Active transport involves carrier proteins. Carrier proteins bind themselves to particles and transport them to highly concentrated areas within a cell.Facilitated diffusion and active transport require carrier proteins.
integral proteins
Both facilitated transport and active transport require the substance that passes the membrane to pass through intermembrane proteins. However, unlike active transport, facilitated transport does not require ATP because it is not actively going against the concentration gradient.
no, but active transport on the other hand, does require transport proteins to transport the large molecules into the cell.
Proteins that carry out passive transport include channel proteins and carrier proteins. Passive transport is "passive" because it does not use energy. The use of passive transport is also called "facilitated diffusion." Proteins that carry out passive transport includes the proton pump and the sodium-potassium pump; these require energy to function.
Active transport requires energy, unlike passive transport. The carrier proteins in active transport act as a "pump" ( fueled by ATP) to carry/attach themselfves to useful proteins for the cell.
passive
They are two major active transport proteins.
atp and transport proteins. novanet.