What is respiratory substrates? What are the kinds of respiratory substrates?

Explanation

### Step-by-Step Solution

1. **Definition of Respiratory Substrate**:
- A respiratory substrate is a substance that is utilized by organisms during the process of respiration to produce energy. It is essential for cellular respiration, which is the process by which cells convert nutrients into energy.

2. **Types of Respiratory Substrates**:
- There are three main kinds of respiratory substrates:
- **Carbohydrates**: These are organic compounds made up of carbon, hydrogen, and oxygen. They are the most common respiratory substrates and include sugars like glucose, which can be broken down during respiration to release energy.
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