Which of the following is not metabolized in the body .

Options

A. Sucrose
B. D-Glucose
C. L-Glucose
D. Aspartame

Answer

To determine which of the following substances is not metabolized in the body, we will analyze each option provided in the question.

**Step 1: Understand the options provided.**
We need to identify the substances given in the question. Common options might include sugars, amino acids, or artificial sweeteners.

**Step 2: Analyze Sucrose.**
Sucrose is a disaccharide sugar that is metabolized in the body. It is broken down into glucose and fructose by the enzyme sucrase. Glucose can then be used for energy or stored as glycogen in the liver and muscles.

**Step 3: Analyze Aspartame.**
Aspartame is an artificial sweetener that is also metabolized in the body. It breaks down into aspartic acid and phenylalanine, both of which can be utilized by the body.

**Step 4: Analyze L-Glucose.**
L-Glucose is a stereoisomer of D-Glucose. While D-Glucose is metabolized by the body, L-Glucose is not naturally occurring in the body and cannot be metabolized. The enzyme hexokinase, which is involved in the glycolysis pathway, does not metabolize L-Glucose.

**Step 5: Conclusion.**
Based on the analysis, the substance that is not metabolized in the body is L-Glucose.

**Final Answer: L-Glucose is not metabolized in the body.**

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