What is facilitated diffusion?

Question

Knowing this, how do you match this type of movment across a cell membrane to its definition:

1._____Diffusion
2._____Osmosis
3._____Facilitated diffusion
4.____Active transport

a. Diffusion of molecules through a protein channel
b. diffusion of water through a membrane
c. movement of molecules to achieve equilibrium
d. movement of molecules against a concentration

Answer 1

Facilitated diffusion (or facilitated transport) is a process of diffusion, a form of passive transport facilitated by transport proteins.

More info at the site below, if you need it.

Answer 2

Facilitated Transport Definition

Answer 3

Facilitated diffusion is passive, moves along the concentration gradient, but requires a carrier protein.

1. C
2. B
3. A
4. D

Answer 4

1) Diffusion -- c.
2) Osmosis -- b.
3) Facilitated Diffusion -- a.
4) Active Transport -- d.

Answer 5

RE:
What is facilitated diffusion?
Knowing this, how do you match this type of movment across a cell membrane to its definition:

1._____Diffusion
2._____Osmosis
3._____Facilitated diffusion
4.____Active transport

a. Diffusion of molecules through a protein channel
b. diffusion of water through a membrane
c. movement of...

Answer 6

"Facilitated" means to make things easier.

Regular diffusion through a plasma membrane means that materials just slip through the membrane in between the phospholipids.

Faciliated diffusion happens when materials, for whatever reason, can't slip between the phospholipids but have to have a kind of channel to be able to get through the membrane. They go through special channel proteins - kind of like a passageway to get through the membrane, but still without using any of the cell's energy.

So the match for 3. facilitated diffusion is A. diffusion of molecules through a protein channel.

1C
2B
4D Against a concentration gradient means to go from low to high concentration instead of the normal diffusion way which is from high to low concentration.

Answer 7

1. C
2. B
3. A
4. D

Answer 8

1-C
2-B
3-A
4-D

Answer 9

Do your own homework.