A zwitter ion is a molecule containing

Options

A. more than one cationic or anionic function
B. polar and nonpolar groups
C. both cationic and anionic funtions
D. none of the above

Explanation

To solve the question "A zwitter ion is a molecule containing," we need to understand what a zwitter ion is and then analyze the options provided.

### Step-by-Step Solution:

1. **Definition of Zwitter Ion**:
A zwitter ion is a molecule that has both positive and negative charges, but the overall charge of the molecule is neutral. This means it contains both cationic (positively charged) and anionic (negatively charged) groups.

2. **Understanding the Structure**:
- A common example of a zwitter ion is glycine, which is an amino acid. In glycine, the amino group (-NH3+) carries a positive charge, while the carboxylate group (-COO-) carries a negative charge.
- The presence of these two functional groups allows the molecule to have both types of charges.

3. **Analyzing the Options**:
- **Option A**: More than one cationic or anionic function - This is incorrect because a zwitter ion specifically has one of each, not multiple.
- **Option B**: Polar and non-polar groups - This is also incorrect as zwitter ions are characterized by their ionic nature, not by the presence of polar and non-polar groups.
- **Option C**: Both cationic and anionic functions - This is correct as zwitter ions contain both types of charges.
- **Option D**: None of the above - This is incorrect since we have identified a correct option.

4. **Conclusion**:
The correct answer is **Option C**: Both cationic and anionic functions.

### Final Answer:
A zwitter ion is a molecule containing both cationic and anionic functions.