Ribosomes are also called Palade particles.

Answer

### Step-by-Step Solution:

1. **Understanding Ribosomes**:
- Ribosomes are essential cellular structures responsible for protein synthesis. They can be found either freely floating in the cytoplasm or attached to the endoplasmic reticulum (ER).

2. **Historical Context**:
- In 1955, George Palade discovered these organelles but did not initially assign them a specific name. At that time, they were referred to as "Palade particles."

3. **Renaming of Palade Particles**:
- Later, these Palade particles were renamed ribosomes. This renaming reflects their function and structure, as they are crucial for assembling amino acids into proteins.

4. **Function of Ribosomes**:
- Ribosomes serve as the sites of protein synthesis, translating messenger RNA (mRNA) into polypeptide chains, which then fold into functional proteins.

5. **Location of Ribosomes**:
- Ribosomes can be found in two primary locations:
- Free ribosomes in the cytoplasm, which typically synthesize proteins that function within the cytosol.
- Bound ribosomes on the rough endoplasmic reticulum (RER), which synthesize proteins destined for secretion or for use in the cell membrane.

6. **Conclusion**:
- Based on the historical context and the function of ribosomes, the statement "Ribosomes are also called Palade particles" is true.