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#virus classification

4 public questions tagged with this topic.

H1N1, H1N2, H2N1, H3N1 and H3N2 are subtypes of which influenza virus?

The principle of microbial physiology explains that growth regulation and host interactions follow molecular programs. Hence influenza A fits best because it corresponds to prokaryotic strategies, as documented in authoritative sources on microbiology.

Ref: Madigan et al., Brock Biology of Microorganisms, 15th Edition, Chapter 13, Virology, explains viral replication and virus-host interactions detailing microbial genetics.

Which one of the following viruses contains single stranded DNA as the genome?

This outcome reflects nucleic acid structure and recombination, where hairpin formation, Holliday junction resolution and translation control ensure fidelity. Option A captures this correctly because it matches molecular mechanisms, consistent with textbook descriptions and experimental observations in molecular biology.

Ref: Watson et al., Molecular Biology of the Gene, 7th Edition, Chapter 9, Transcription and RNA Processing, describes RNA hairpin formation, secondary structures and regulatory mechanisms controlling gene expression.

Smallest lipid containing enveloped animal virus belongs to

enzyme catalysis and lipid structure analysis shows substrate affinity, transition state stabilization and phospholipid composition govern function. Consequently Flaviviridae emerges as the valid choice since it reflects catalytic efficiency and membrane organization, aligning with established principles in biochemistry literature.

Ref: Lehninger Principles of Biochemistry, Chapter 9, Lipids and Membranes, explains phospholipid components, glycerol, fatty acids, phosphate group and membrane structure providing foundation for lipid biochemistry.

Which is not an RNA virus?

Mechanistically, nucleic acid structure and recombination involves hairpin formation, Holliday junction resolution and translation control ensure fidelity. This validates HPV because it matches molecular mechanisms, a pattern repeatedly demonstrated in molecular biology research.

Ref: Lodish et al., Molecular Cell Biology, 8th Edition, Chapter 8, RNA Processing and Translation, covers mRNA hairpins, puromycin mechanism and aminoacyl-tRNA function governing protein synthesis.