Viruses And Acellular Life Exam (2024) – All Questions & Answers (Graded A+)

Viruses And Acellular Life Exam (2024) – All Questions & Answers (Graded A+) Viruses And Acellular Life Exam (2024) – All Questions & Answers (Graded A+) Approximately what percent of earth's biodiversity has been described? - ANSWER - 10-15% The chapters of life on earth are characterized by? - ANSWER - transitions or innovations in form and function Shared ancestry - ANSWER - phylogenetic relationships What are nodes? - ANSWER - last common ancestors between branches levels of classification - ANSWER - Kingdom, Phylum, Class, Order, Family, Genus, Species The 6 kingdoms split by cell types - ANSWER - Archaebacteria, Eubacteria, Protista, Fungi, Plantae, Animalia The 2 domains based on genetic similarity - ANSWER - vertebrates, invertebrates what is W5H? - ANSWER - who, how, what, where, when, why Viruses and other acellular life key features - ANSWER - Not considered 'alive' in the strict sense, Lack cells, really just particles or collections of molecules, But do exhibit some 'life-like' properties (self-replication) Viruses structure features, how to distinguish them - ANSWER - Nucleic acid (RNA or DNA), wrapped in a protein 'capsid' What do viruses do? - ANSWER - They infect living organisms, propagating (i.e. making copies of) themselves What are prions? - ANSWER - Free-floating proteins; no nucleic acid or protein coat Where and when did viruses evolve? - ANSWER - Viruses are diverse in form and in their hosts. Evolutionary origins are unclear examples of viruses - ANSWER - HIV, West Nile Virus, Influenza, Ebola Virus Prion disease example - ANSWER - Bovine Spongiform Encephalitis