micro exam 2 (ch.5) Flashcards

used to describe viral RNA genome that CANNOT be immediately translated into protein

single stranded RNA genomes that are ready for immediate translation into proteins are _____ RNA

process that occurs during or after penetration when viruses lose their capsid *or envelope if they have one

phage that is a bacteriophage that incorporates itself into the host genome as a lysogenic prophage

viruses that can infect only certain tissues are described as having a tissue specificity OR

three main criteria used to classify viruses

describes physical rupture of cell

when cells are infected but cells are not immediately lysed

when individual viral gees exist on separate pieces of genomic RNA, the genome is_____

multinucleated mass of cells caused by viral infection

total nucleic acid content of a virus can be referred to as

similarities of temperate and lytic phages

complete set of viruses that are associated with the human body

methods that a virus can use to gain entry into an animal cell

persistence of bacteriophage DNA within a host chromosome

bacterium acquires a new trait from its temperate phage

noncellular infectious agent that depends on other viruses for replication

infectious agent made up of only protein and associated with spongiform encephalopathies

3 purposes of viral cultivation

disease characterized b brain tissue pathology due to prions

virus that synthesizes DNA directly from RNA using reverse transcripticase

describes the phage DNA that is latently incorporated into the bacterial host genome

type of virus that parasitizes other viruses infecting the same host cell

two in vivo methods for viral cultivation

enzyme capable of taking an RNA genome and generating a DNA copy is called

process in which a virus is engulfed by a cell and enclosed in a vacuole or vesicle

treating viral diseases....

clear area where virus-infected monolayers of cells have been disrupted or destroyed

infectious aged that lacks a capsid and only consists of a strand of RNA

an animal virus which has intergrated its DNA into the DNA of its host cell

mass of viruses or damaged organelles caused by viral infection of a cell

phage type that can incorporate itself into the host genome as a lysogenic prophage

ways that enveloped animal viruses are released from the host cell

viral capsid proteins are synthesized during the ___ stage of the synthesis phase of the viral life cycle

viruses can cause cancer by

cultured cells grow in the form of ___, a single confluent sheet of cells that supports viral multiplication

capsomeres are composed of

most host cell receptors that viruses attach to are ___ that cells use in normal function

two noncellular infectious agents that are medically important are

cellular organisms that viruses can infect

challenging for scientists to design antiviral drugs because

helical capsid

icosahedral capsid

virus types released from host cells by lysis

exocytosis or___ of enveloped viruses occurs from the host cell membrane during the release stage of viral multiplication

virus that specifically infects bacteria

phage DNA that is latently incorporated into the bacterial host genome is called

segmented RNA genome

identify all the types of nucleic acid genomes which have been discovered carried by various bacteriophages

infectious agent made up of only protein

viruses were discovered by

viruses CANNOT

clear area where a virus-infected cell lysed and infected all the neighboring cells and lysed those too

pathways that could produce proteins used by viruses

persistence of bacteriophage DNA within a host chromosome

most human viral infections are

when bacteriophages infect pathogenic bacteria and result in a new pathogenic trait it is called

cell culture is the same as

single confluent sheet of cells that support viral multiplication and grow cultured cells

virus types released from host cells by lysis

integrated its DNA into the DNA of its host cell

T-even bacteriophage nucleic acid enters the host cell by

capsids of naked helical viruses are

capsids of enveloped helical viruses are

viroids are composed of only

most RNA viruses will assemble the vision within the host cells...

antiviral drugs target

process of ___ a prophage is activated and enters the lytic cycle

in enveloped viruses, viral spike proteins insert into the host cell membrane in order to be incorporated into the new virion

viral DNA polymerase genes are expressed during the ___ of the synthesis phase

most bacteriophages have ____ DNA genomes