Viruses — Flashcards

Flashcard 571: Orthomyxovirus has _____ segments

Answer: 8 (#)

Flashcard 572: Which virus causes hemorrhagic fever with renal syndrome (HFRS)?_____

Answer: Hantaan virus (and other Old World hantaviruses)

Extra: Hantaviruses cause two distinct clinical syndromes: 1. **Hemorrhagic Fever with Renal Syndrome (HFRS)**: Caused by Old World hantaviruses (e.g., **Hantaan virus**, Seoul, Puumala). 2. **Hantavirus Pulmonary Syndrome (HPS)**: Caused by New World hantaviruses (e.g., **Sin Nombre virus**, Andes virus).

Flashcard 573: The _____ cycle is when a phage injects genetic material into a bacterium, multiplies, and then lyses the cell, releasing the new viruses.

Answer: Lytic (Lytic vs. Lysogenic)

Flashcard 574: What type of viruses are picornaviruses? (DNA, RNA (sense), etc)_____

Answer: Positive sense RNA

Flashcard 575: A definitive diagnosis of infectious mononucleosis is made by serologic testing for the EBV _____ antigen

Answer: viral capsid

Flashcard 576: Which envelope protein of Influenza determines cell tropism?_____

Answer: Hemagglutinin

Flashcard 577: What type of virus is HHV-8? (DNA, RNA (sense), etc.)_____

Answer: Double-stranded DNA

Flashcard 578: Which linear DNA virus causes hemorrhagic cystitis?_____

Answer: Adenovirus

Flashcard 579: Hemagglutinin is a virulence factor that binds _____ promoting viral entry into cells

Answer: sialic acid

Flashcard 580: Which type of virus is parainfluenza (croup)?_____

Answer: Paramyxovirus