Viruses — Flashcards

Flashcard 571: Transmission of Adenovirus includes respiratory droplets, fecal-oral route, or _____ contact

Answer: direct

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 polyomaviruses? (DNA, RNA (sense), etc.)_____

Answer: Double-stranded DNA

Flashcard 575: Which type of virus is parainfluenza (croup)?_____

Answer: Paramyxovirus

Flashcard 576: Which virus is said to be wheel-shaped?_____

Answer: Rotavirus

Flashcard 577: Which viral genetic phenomenon is characterized by the acquisition of a new viral surface protein (e.g., Hemagglutinin) from another virus during co-infection?

Answer: Phenotypic mixing

Flashcard 578: Orthomyxovirus has _____ segments

Answer: 8 (#)

Flashcard 579: How many different MHC class I molecules are typically expressed on a single nucleated cell?

Answer: 6 (2 alleles each for HLA-A, HLA-B, and HLA-C)

Flashcard 580: What type of viruses are picornaviruses? (DNA, RNA (sense), etc)_____

Answer: Positive sense RNA