Question

Sort the phrases based on whether they describe or give an example of facilitated diffusion, active transport, or both.

Answer 1

Answer:

1) Movement to area of lower concentration: facilitated diffusion  . It consists in the diffusion of a substance through a membrane in favor of its concentration gradient, that is to say that there is movement from an area of ​​greater concentration to another of less concentration.

2) Movement assisted by proteins: both. In the facilitated diffusion the molecules must pass through membrane proteins. In active transport, the proteins involved are called pumps that normally use chemical energy.

3) Requires energy active transport: active transport makes use of energy for the movement of molecules because the movement is against a concentration gradient.

4) Sodium ion transport out of the cell: It is a type of active transport because it requires energy to allow movement against its concentration gradient, the ATP supplies the energy.

5) Glucose transport into cell: It is a type of diffusion facilitated through membrane proteins.

6) Movement across a membrane: both