Active transport is used to move molecules and ions across a membrane against their concentration gradient. "Active" means that the transporter requires energy to do its job (eg. glucose).
osmosis
facilitated diffusion
In diffusion a substance moves from a high concentration to a lower one. In active transport it is the opposite, the substance moves from a low to a high concentration. Active transport always requires energy while no energy is needed in diffusion. diffusion is also down concentration gradient (just as osmosis), while active transport is against concentration gradient.
Primary Active Transport.
Well, if it's moving into an area of higher concentration (that is, moving against the concentration gradient) that sounds like active transport (but it may go under different names, such as diffusion against the gradient)
Passive Transport.
Active Transport
osmosis
Active transport requires energy as it moves against a concentration gradient. It actively propels molecules from an area of low concentration to an area of high concentration
Active Transport is the cell process that moves substances against a concentration gradient.
Active transport moves solutes against their concentration gradient; facilitated diffusion moves substances down their concentration gradient.
active transport
ative transport
Active transport requires energy, as this moves against a concentration gradient. Simple diffusion does not require any energy input - as this moves down a concentration gradient.
Active transport moves substances against the concentration gradient.
Active transport requires energy and moves particles against the concentration gradient. To move necessary molecules from an area of high concentration to an area that is lower using chemical energy is called primary active transport.
its active transport because it expands in opp direction and pushes