Question

Explain the functions of Smooth Endoplasmic Reticulum & Rough Endoplasmic Reticulum.

Answer 1

Smooth Endoplasmic Reticulum Function:

• Smooth ER is responsible for the synthesis of essential lipids such as phospholipids and cholesterol.
• Smooth ER is also responsible for the production and secretion of steroid hormones.
• It is also responsible for the metabolism of carbohydrates.
• The smooth ER store and release calcium ions. These are quite important for the nervous system and muscular system.

Rough Endoplasmic Reticulum Function:

• The majority of the functions of rough ER is associated with protein synthesis.
• Rough endoplasmic reticulum also plays a vital role in protein folding.
• Also ensures quality control (regarding correct protein folding).
• The second most important function after protein synthesis and protein folding is protein sorting.