Amino acids bonded together in long peptide chains form:

Options

A. nucleic acids
B. organic acids
C. proteins
D. hydrocarbons

Explanation

To solve the question "Amino acids bonded together in long peptide chains form:", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Amino Acids**:
- Amino acids are the building blocks of proteins. Each amino acid has a basic structure that includes an amino group, a carboxyl group, and a variable side chain (R group).

2. **Peptide Bonds**:
- When amino acids link together, they do so through a specific type of bond called a peptide bond. This bond forms between the carboxyl group of one amino acid and the amino group of another, releasing a molecule of water (a process known as dehydration synthesis).

3. **Formation of Peptide Chains**:
- As more amino acids are added through peptide bonds, they create long chains known as polypeptides. These chains can vary in length and sequence, which ultimately determines the structure and function of the resulting protein.

4. **Final Structure - Proteins**:
- When these polypeptide chains fold and undergo various modifications, they form functional proteins. Proteins are essential macromolecules that play numerous roles in biological processes, including catalysis (as enzymes), structure, transport, and signaling.

5. **Evaluating Options**:
- Now, let’s look at the options provided:
- **Nucleic acids**: Formed from nucleotides, not amino acids.
- **Organic acids**: Not related to the structure of proteins.
- **Proteins**: Correct answer, as they are formed from long chains of amino acids.
- **Hydrocarbons**: Not related to amino acids.

6. **Conclusion**:
- Therefore, the answer to the question is that amino acids bonded together in long peptide chains form **proteins**.

### Final Answer:
Amino acids bonded together in long peptide chains form **proteins**.

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