A Level Biology Practice Exam

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What are prokaryotes primarily characterized as?

  1. Multi-celled organisms

  2. Single-celled prokaryotic organisms

  3. Eukaryotic plant cells

  4. Simple multicellular organisms

The correct answer is: Single-celled prokaryotic organisms

Prokaryotes are primarily characterized as single-celled organisms. This classification reflects their cellular structure, as prokaryotic cells lack a nucleus and membrane-bound organelles, which distinguishes them from eukaryotic cells. Prokaryotes include bacteria and archaea, both of which typically exist as single cells that can reproduce independently. Their simpler organization allows them to thrive in a wide range of environments. The other options mention multi-celled organisms or eukaryotic cells, which do not accurately reflect the fundamental characteristics of prokaryotes.

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