What are different factors which affect rate of facilitated diffusion?

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Facilitated Diffusion**:
- Facilitated diffusion is a type of passive transport where molecules move across a cell membrane through protein channels or carriers. This process occurs along the concentration gradient, meaning substances move from an area of higher concentration to an area of lower concentration without the need for energy (ATP).

2. **Factors Affecting the Rate of Facilitated Diffusion**:
- **Size of the Molecules**: The size of the molecules significantly impacts the rate of diffusion. Smaller molecules can pass through the membrane more easily and quickly than larger molecules. Therefore, smaller substances tend to diffuse faster.

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