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

An electron micrograph shows a single cell containing a circular chromosome concentrated in a region with no enveloping membrane, scattered 70S ribosomes, and no internal membrane bounded compartments. Which conclusion follows?

A.The cell is prokaryotic
B.The cell is a eukaryote caught between divisions
C.It is a plant cell stripped of vacuoles during preparation
D.It is fungal, since fungi often lack organized nuclei

Explanation

Core Concept

A chromosome located in a nucleoid rather than a membrane-bound nucleus, bacterial-type ribosomes, and the absence of typical eukaryotic membrane-bound organelles strongly support prokaryotic identity. Prokaryotes can still contain specialized internal regions and structures, so the distinction should not be taught as 'organized compartments versus completely undivided cytoplasm.'

Correct Answer

AThe cell is prokaryotic

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