What is the most correct about enzymes?

Options

A. All enzymes are basically proteins
B. All proteins are basically enzymes
C. Some proteins are enzymes
D. Some enzymes are proteins

Answer

### Step-by-Step Text Solution

1. **Understanding Enzymes**: Enzymes are biological catalysts that speed up chemical reactions in living organisms. They are crucial for various metabolic processes.

2. **Composition of Enzymes**: The majority of enzymes are proteins. This means that they are made up of amino acids and have a specific three-dimensional structure that is essential for their function.

3. **Exceptions to the Rule**: While most enzymes are proteins, there are exceptions. One notable exception is ribozymes, which are RNA molecules that can also catalyze biochemical reactions.

4. **Evaluating Statements**: When evaluating statements about enzymes, it's important to recognize that while the statement "All enzymes are proteins" is mostly true, it is not entirely accurate due to the existence of ribozymes.

5. **Conclusion**: The most correct statement regarding enzymes is that "Most enzymes are proteins, but some are RNA (ribozymes)." Therefore, while the statement "All enzymes are proteins" is close to being correct, it is not 100% accurate.