The viruses are:
Correct answer: C. Non-cellular
- A. Cellular
- B. Prokaryotes
- C. Non-cellular
- D. Eukaryotes
- E. Visible with naked eye
Explanation
Viruses are classified as non-cellular because they lack the cellular structures that define living cells, such as a cell membrane, cytoplasm, and organelles. Instead, they consist of genetic material (either DNA or RNA) surrounded by a protein coat called a capsid. Unlike cellular organisms, viruses cannot perform metabolic processes or reproduce on their own; they must infect a host cell to replicate. This distinguishes them from cellular life forms, including prokaryotes and eukaryotes.Option A (Cellular) is incorrect because viruses do not have the structures that define cellular life. Option B (Prokaryotes) is incorrect because viruses do not fit the definition of prokaryotic cells, which have a cell membrane and cytoplasm. Option D (Eukaryotes) is incorrect because viruses do not have the complex structures found in eukaryotic cells. Option E (Visible with naked eye) is incorrect because viruses are too small to be seen without specialized equipment.
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About Acellular Life
Viruses are acellular infectious particles whose capsid, nucleic acid and host-dependent replication distinguish them from living cells. HIV infection covers transmission, replication, effects on helper T cells, progression to AIDS, symptoms, prevention and treatment, while AIDS is the disease state caused by advanced immune-system damage rather than a separate virus.
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