[Campbell Biology P.154] Which of the following statements correctly differentiates the prim... | Practice Question
Which of the following statements correctly differentiates the primary functions of smooth endoplasmic reticulum ER and rough endoplasmic reticulum ER ?
A: Smooth ER is primarily involved in protein synthesis and modification, while rough ER is responsible for lipid synthesis and detoxification.
B: Smooth ER mainly functions in calcium ion storage and detoxification, whereas rough ER is the site for synthesis of secretory proteins and membrane assembly.
C: Both smooth ER and rough ER are primarily involved in the degradation of waste products within the cell.
D: Rough ER produces transport vesicles for intercellular transport, while smooth ER forms the nuclear envelope.
Explanation
The passage clearly states that smooth ER stores calcium ions and is involved in detoxification, while rough ER is studded with ribosomes for the synthesis of secretory proteins and is a 'membrane factory' for the cell.