Which of the following is not the function of smooth endoplasmic reticulum?
ExplanationThere are two types of endoplasmic reticulum: rough and smooth. The surface of the rough endoplasmic reticulum is studded with protein-manufacturing ribosomes giving it a rough appearance (hence its name). The smooth endoplasmic reticulum to which the ribosomes are not attached is a network of fluid-filled tubules. Manufacture of integral membrane proteins is the function of rough endoplasmic reticulum but not the smooth endoplasmic reticulum. The smooth endoplasmic reticulum has functions in several metabolic processes. It synthesizes lipids, phospholipids, and steroids, in muscle cells; it regulates calcium ion concentration, causes detoxification of natural metabolism products and of alcohol and drugs. It also contains the enzyme glucose-6-phosphatase, which converts glucose-6-phosphate to glucose.
