Cisternae locations in cell organelles

Steps:

• Define cisternae as flattened, membrane-bound sacs in the endomembrane system.
• Recall primary location: stacked cisternae form the Golgi apparatus (option 1).
• Note secondary location: cisternae-like structures in the endoplasmic reticulum (option 2).
• Exclude other organelles like mitochondria or lysosomes (option 3), which lack cisternae.

Why A is correct:

• Cisternae are defining features of both Golgi apparatus and endoplasmic reticulum per cell biology definitions.

Why the others are wrong:

• B includes 3, but cisternae are absent in structures like mitochondria.
• C omits 2, ignoring endoplasmic reticulum cisternae.
• D excludes 1, missing the primary stacked cisternae in Golgi.

Not enough information: Labels for options 1, 2, and 3 are missing, making full verification impossible.

Final answer: A