Most of the naturally occuring sugars have ...........configuration while most of the naturally occuring .........have L-configuration.

Explanation

To solve the question, we need to identify the configurations of naturally occurring sugars and amino acids.

1. **Identify the configuration of naturally occurring sugars:**
- Most naturally occurring sugars are classified as D-configuration. This is based on the orientation of the hydroxyl (-OH) group on the penultimate carbon (the second to last carbon) in the sugar molecule. In D-sugars, the hydroxyl group on this carbon is on the right side when the molecule is drawn in a Fischer projection.

2. **Identify the configuration of naturally occurring amino acids:**
- Most naturally occurring amino acids have an L-configuration. This refers to the orientation of the amino group (-NH2) in relation to the carboxyl group (-COOH) in the amino acid structure. In L-amino acids, the amino group is on the left side in a Fischer projection.

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