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Cell quiz

Every question below is derived from a reviewed claim about cell, with a real explanation shown once you submit.

ExplorerQuestion 1 of 4

According to cell theory, what is the basic structural and functional unit of all living things?

InvestigatorQuestion 2 of 4

A bacterium (a prokaryote) keeps its DNA inside a membrane-bound nucleus, just like a human cell does.

InvestigatorQuestion 3 of 4

Which organelle produces most of a eukaryotic cell's usable chemical energy (ATP)?

ScientistQuestion 4 of 4

The cell membrane is described as 'selectively permeable'. Explain what that means for how a cell controls its internal environment.