Identify the content that is not present in the semen of men.

Options

A. Citrate
B. Ascorbic acid
C. Acid phosphatase
D. Citric acid

Answer

**Step-by-Step Solution:**

1. **Understand the Composition of Semen**: Semen is a fluid produced by males that contains various components essential for reproduction. The primary components include sperm cells, water, plasma, mucus, and enzymes.

2. **Identify the Key Components**: The main components of semen include:
- Sperm (which carries genetic material)
- Water (which serves as a solvent)
- Plasma (which provides nutrients)
- Mucus (which helps in lubrication)
- Enzymes (which facilitate various biological processes)

3. **List the Enzymes Present in Semen**: Some of the specific enzymes and substances found in semen include:
- Citrate
- Ascorbic acid
- Acid phosphatase

4. **Determine the Content Not Present in Semen**: The question asks for a content that is not present in semen. Among the options provided, citric acid is identified as absent. This is because semen is an alkaline solution, and citric acid is acidic.

5. **Conclude the Answer**: Based on the analysis, the content that is not present in the semen of men is citric acid.

**Final Answer**: Citric acid is not present in the semen of men.

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