Most of the naturally occurring ………………………. have D-configuration while most of the naturally occurring …………………….. have L-configuration.

Explanation

To answer the question: "Most of the naturally occurring ………………………. have D-configuration while most of the naturally occurring …………………….. have L-configuration," we need to fill in the blanks with the appropriate biomolecules.

### Step-by-Step Solution:

1. **Understanding D and L Configuration**:
- D and L configurations refer to the stereochemistry of chiral molecules. Chiral molecules can rotate polarized light in different directions: clockwise (D) or counterclockwise (L).

2. **Identifying Naturally Occurring D-Configuration**:
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