Complex with nucleus and membrane bound organelle- can be unicellular or multicellular

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Prepare for your College Biology Exam 1 with flashcards and multiple choice questions. Test your understanding with detailed explanations and hints to ensure success in your biology exam!

Multiple Choice

Complex with nucleus and membrane bound organelle- can be unicellular or multicellular

Explanation:
Having a nucleus and membrane-bound organelles is what defines a eukaryotic cell. This level of internal organization allows more complex structure and function, and eukaryotes can be either single-celled or multicellular, as seen in organisms from yeast to humans. In contrast, prokaryotes like bacteria lack a true nucleus and membrane-bound organelles, and viruses aren’t cells at all—they’re just genetic material inside a protein shell that must hijack a host cell to replicate. So the description best fits eukaryotes.

Having a nucleus and membrane-bound organelles is what defines a eukaryotic cell. This level of internal organization allows more complex structure and function, and eukaryotes can be either single-celled or multicellular, as seen in organisms from yeast to humans. In contrast, prokaryotes like bacteria lack a true nucleus and membrane-bound organelles, and viruses aren’t cells at all—they’re just genetic material inside a protein shell that must hijack a host cell to replicate. So the description best fits eukaryotes.

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