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The changing of normal cells into neoplastic (cancerous) cells
Transformation
The flexible membrane surrounding the capsid of some viruses
Envelope
DNA viruses are assembled in this area of the host cell
Nucleus
The phase of viral replication in which the viral capsid is dissolved releasing the core.
Uncoating
The phase of viral replication in which the vius enters the host cell.
Penetration
The protein coat surrounding the viral nucleic acid
Capsid
the antigentic drift occuring in some viruses is responsible for repeated _______
epidemics
Bacteriophage DNA that is permanetly incorporated into the DNA of a bacterial cell
Prophage
Glycoproteins occurring on the capsid or envelope that function in the attachment of the cirus to the host cell membrane
Spikes
The nucleic acid in viruses is called the ________
Core
A culture medium for viruses
Eggs
Changes in viral structure due to frequent spontaneous mutations
Antigentic Drift
Organisms (ie:viruses) that are unable to multiply outside a host cell
Intracellular Parasites
In order for adsorption to occur the viral spikes must be _________ to the receptor sites on the host cell
Complementary
Viruses must obtain this from the host cell.
Energy
The movement of neoplastic cells from one part of the body to another resulting in the formation of a secondary tumor.
Metastasis
The viral core may consist of DNA or ______
RNA
A virus that infects bacterial cells
Bacteriophage
The process during which viruses acquire their envelope
Budding
The phage of viral replication in which mature virus particles leave the host cell
Release
A cancer causing gene
Oncogene
RNA virus capable of transcribing their RNA into DNA in the host cell's cytoplasm
Retroviruses
The bacteriophage is an example of a _______ shaped virus.
Complex
The condition that occurs when a provirus becomes permantely incorporated in the host cells DNA remains dormant and is inherited by all daughter cells
Lysogeny
The helical shaped, hollow structure that is part of a bacteriophage
Tail
Granules occurring in the cytoplasm or nucleus of a viral infected host cell at the site of viral replication
Inclusion Bodies
The accumulation of abnormal or transformed cellse
Tumor
In order to infect a bacterial cell the tail of the bacteriophage must attach to the _______ _________
Cell Wall
The enzyme produced by the retoviruses
Reverse Transcription
Viruses are measured in this unit
Nanometers
Method of release for bacterial viruses and some animal viruses
Lysis
Subunits of the capsid
Capsomers
Capsomers are formed of chains of identical ______ _______
Amino Acids
Viruses that lack an envelope are called ________ viruses
Naked
Condition that occurs when a prophage is expressed giving the bacterial cell a new, different property (the ability to produce disease)
Lysogenic Conversion
a culture medium for viruses consisting of viable animal cells.
Tissue Cultures
A coiled or corkscrew shaped virus
Helical
Viral DNA that has become permanently incorporated into the DNA of a host cell is called a _________
provirus
Infections that occur as a result of repeated activation of a lysogenic provius which enters the lytic cycle
Recurrent
Viable viruses that are weakened unable to produce disease
Attenuated
Condition that occurs when viruses cross the placenta and infected the fetus
Teratogenesis
RNA viruses are replicated and assembled in this are of the host cell
Cytoplasm
The phase of viral replication in which viral components are assembled into complete virus particles
Maturation
A virus whose capsid is composed of 20 equilateral triangles
Icosahedral
Due to their simple structure viruses are described as _________ organisms
Acellular
Viral proteins are produced at these host cell structures
Ribosomes
A tumor that is often nonencapsulated invasive and frequency metatasizes
Malignant
A common use of attenuated viruses
Vaccines
Soluble substances often produced as a result of lysogenic conversation in bacteria
Toxins
The phase of viral replication in which viruses adhere to the host cell membrane
Adsorption
Type of viral reproductive cycle which results in the lysis of the infected host cell
Lytic
the virus envelope in derived from this part of the host cell
Membrane
A type of CPE consisting of areas in the monolayer of host cells where the multiplying viruses have lysed the cells
Plaques
An encapsulated, noninvasive tumor
Benign
A single virus particle
Viron
The polyhearl structure of a bacteriophage surrounding the viral DNA
Head
Author
jess03
ID
42973
Card Set
Virus Crossword
Description
Micro
Updated
2010-10-19T01:06:21Z
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