Differentiate between Facilitated diffusion and active transport

Explanation

### Step-by-Step Solution:

1. **Definition of Facilitated Diffusion**:
- Facilitated diffusion is a type of passive transport that allows molecules to cross the plasma membrane with the help of transport proteins. It does not require energy (ATP) because it relies on the natural movement of molecules down their concentration gradient.

2. **Definition of Active Transport**:
- Active transport is a process that moves molecules against their concentration gradient, from an area of lower concentration to an area of higher concentration. This process requires energy, usually in the form of ATP, to function.

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