Smooth endoplasmic reticulum has many ribosomes attached to it.
Answer
false
Explanation
Rough endoplasmic reticulum derives its name from attached ribosomes; smooth endoplasmic reticulum is devoid of them. Smooth ER is associated with lipid synthesis and processes such as drug metabolism. **Key takeaway:** Ribosome presence distinguishes rough from smooth ER. **Glossary:** Ribosome: cellular site of protein synthesis.