Differentiate between the following pairs on the basis of what is given in the brackets:
Anabolism and Catabolism (Mechanism)

Explanation

### Step-by-Step Solution:

1. **Definition of Metabolism**:
- Metabolism refers to the sum total of all chemical reactions occurring in living organisms. It encompasses all processes that convert food into energy and building blocks for growth.

2. **Understanding Anabolism**:
- Anabolism is a metabolic process that is known as a **constructive process**.
- It involves the **utilization of simpler substances** to build **complex substances**.
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