Question

What makes endoplasmic reticulum smooth?

Answer 1

• $\text{The smooth endoplasmic reticulum (SER) is an organelle that is involved in the production of steroid hormones}$$\text{and phospholipids.}$
• $\text{The SER is called smooth compared to the rough endoplasmic reticulum (RER). The RER is involved in protein}$ $\text{production and folding for this it requires ribosomes that are associated with the RER membrane, giving it a}$ $\text{'rough' appearance. The SER doesn't require ribosomes for its task and is therefore smooth.}$