Apentix/AP Biology/Unit 2: Cell Structure and Function/Question
AP Biologymediummcq1 pt

Which structural feature most clearly distinguishes eukaryotic cells from prokaryotic cells?

A.A circular chromosome carrying the cell's genetic information
B.Ribosomes suspended in the cytoplasm that build polypeptides
C.Membrane-enclosed organelles that separate incompatible chemical reactions
D.A plasma membrane built of a phospholipid bilayer

Explanation

Core Concept

Eukaryotic cells use membrane-bound organelles to create specialized internal compartments. Prokaryotes typically lack those membrane-bound organelles, but they are not simply one featureless cytoplasmic compartment: they can contain specialized internal regions and structures. The current AP framework explicitly uses this more nuanced distinction.

Correct Answer

CMembrane-enclosed organelles that separate incompatible chemical reactions

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