The peptide bond joining amino acids into proteins is a specific example of the ……………….. Bond.

Options

A. Amide
B. carbonyl
C. Ester
D. Glycosidic

Answer

To answer the question, "The peptide bond joining amino acids into proteins is a specific example of the ……………….. Bond," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Peptide Bond**:
- A peptide bond is a type of chemical bond that links amino acids together in proteins. It forms between the carboxyl group of one amino acid and the amino group of another.

2. **Identify the Type of Bond**:
- The peptide bond is specifically formed through a condensation reaction, where a molecule of water is released. This bond is classified under a broader category of bonds.

3. **Recall Functional Groups**:
- The peptide bond can be recognized as a specific type of amide bond. Amides are characterized by the presence of a carbonyl group (C=O) directly attached to a nitrogen atom (N).

4. **Differentiate from Other Bonds**:
- Other types of bonds mentioned include:
- **Carbonyl Bond**: This refers to the C=O bond but does not involve the nitrogen.
- **Ester Bond**: This involves a carbonyl and an oxygen atom connected to another carbon, typically in the context of fats and oils.
- **Glycosidic Linkage**: This is a bond between sugars, not relevant to amino acids.

5. **Conclusion**:
- Since the peptide bond is formed between the amino group of one amino acid and the carboxyl group of another, it is specifically an amide bond.

### Final Answer:
The peptide bond joining amino acids into proteins is a specific example of the **amide bond**.

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