Carrier proteins.
protein carrier or channel
isotonic
In facilitated diffusion, substances will still diffuse down their concentration gradient but they make use of a transport protein.
Active transport moves solutes against their concentration gradient; facilitated diffusion moves substances down their concentration gradient.
Facilitated diffusion is a type of diffusion specifically for larger molecules, to help them cross a selectively permeable membrane with the help of integral proteins that act as carriers. Facilitated diffusion is a passive process, i.e. it does not need energy/ATP.
Facilitated diffusion = down concentration gradient, it just uses a carrier protein (doesn't need energy)Active transport =goes UP concentration gradient with the help of a carrier protein and ENERGY
they move from an area of high concentration to low concentration in an effort to create equilibrium.
Carrier proteins
In facilitated diffusion, substances will still diffuse down their concentration gradient but they make use of a transport protein.
The substances are moving from areas of high concentration to areas of low concentration with the help of a protein channel.
Active transport moves solutes against their concentration gradient; facilitated diffusion moves substances down their concentration gradient.
Diffusion is the movement of molecules or partocles from an area of high concentration to an area of lower concentration, and Facilitated diffusion is when substances difuse across cell membranes more rapidly than you might expect.
Facilitated diffusion is a type of diffusion specifically for larger molecules, to help them cross a selectively permeable membrane with the help of integral proteins that act as carriers. Facilitated diffusion is a passive process, i.e. it does not need energy/ATP.
They both transport substances up their concentration gradients.
Substances can move into and out of a cell through passive diffusion, facilitated diffusion, and active transport. In passive diffusion, molecules move from an area of high concentration to low concentration. Facilitated diffusion involves the use of carrier proteins to help molecules pass through the cell membrane. Active transport requires energy to move molecules against their concentration gradient.
Facilitated diffusion
Facilitated diffusion = down concentration gradient, it just uses a carrier protein (doesn't need energy)Active transport =goes UP concentration gradient with the help of a carrier protein and ENERGY
they move from an area of high concentration to low concentration in an effort to create equilibrium.
Facilitated diffusion requires energy. This is because facilitated diffusion is the transfer of molecules from a lower concentration to a higher concentration.membrain pouch