_are storage bodies for intracellular calcium.
Correct answer: B. SER (Smooth Endoplasmic Reticulum)
- A. RER (Rough Endoplasmic Reticulum)
- B. SER (Smooth Endoplasmic Reticulum)
- C. Vacuoles
- D. Golgi complex
Explanation
The correct answer is the SER (Smooth Endoplasmic Reticulum). The SER is specialized in storing calcium ions within cells and is crucial in muscle cells, where it is referred to as the sarcoplasmic reticulum. This calcium storage is important for various cellular processes, including muscle contraction. The other options are incorrect as they serve different functions: the RER is involved in protein synthesis, vacuoles are more about storage of substances like nutrients and waste, and the Golgi complex is involved in processing and packaging macromolecules.
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