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Viruses are made up of a nucleic acid surrounded by proteins.
✨ Viruses are simple structures composed of nucleic acid (DNA or RNA) surrounded by a protective protein coat (capsid).
✨ Some viruses also have a lipid envelope, but the basic structure is always nucleic acid plus protein.
✨ They are not cells and lack organelles, so they cannot replicate independently.
✨ Instead, viruses must infect a host cell and use its machinery to reproduce.
✨ This simplicity is what makes viruses unique among microorganisms—they are obligate intracellular parasites.
This question is from BIO 253 QUIZ 2-Handros College of Nursing which contains 9 questions.
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