Which one is not properly paired

Options

A. `{:("Golgi apparatus",-,"Breaking of complex macromolecules"):} `
B. `{:("Endoplasmic reticulum", -, "Protein synthesis"):}`
C. `{:("Chloroplast",-,"Photosynthesis"):} `
D. `{:("Mitochondria",-,"Oxidative phosphorylation"):} `

Answer

To determine which pairing is not properly matched, we will analyze each of the organelles and their respective functions:

1. **Golgi Apparatus**:
- **Function**: The Golgi apparatus is primarily involved in the packaging and modification of proteins received from the rough endoplasmic reticulum (ER).
- **Given Pairing**: Breaking of complex macromolecules.
- **Analysis**: This is incorrect. The Golgi apparatus does not break down macromolecules; it modifies and packages proteins.

2. **Endoplasmic Reticulum (ER)**:
- **Function**: The rough endoplasmic reticulum (RER) is involved in protein synthesis due to the presence of ribosomes, while the smooth endoplasmic reticulum (SER) is involved in lipid synthesis.
- **Given Pairing**: Protein synthesis.
- **Analysis**: This is correct. The RER is indeed responsible for protein synthesis.

3. **Chloroplast**:
- **Function**: Chloroplasts are the sites of photosynthesis in plant cells, containing chlorophyll.
- **Given Pairing**: Photosynthesis.
- **Analysis**: This is correct. Chloroplasts are responsible for photosynthesis.

4. **Mitochondria**:
- **Function**: Mitochondria are known as the powerhouse of the cell, where ATP (energy) is produced, and oxidative phosphorylation occurs.
- **Given Pairing**: Oxidative phosphorylation.
- **Analysis**: This is correct. Mitochondria are indeed the site of oxidative phosphorylation.

**Conclusion**: The only incorrect pairing is the Golgi apparatus with the breaking of complex macromolecules. The correct function of the Golgi apparatus is related to the packaging and modification of proteins.

### Final Answer:
The pairing that is not properly matched is **Golgi Apparatus - Breaking of complex macromolecules**.