Virus Crossword

The changing of normal cells into neoplastic (cancerous) cells

The flexible membrane surrounding the capsid of some viruses

DNA viruses are assembled in this area of the host cell

The phase of viral replication in which the viral capsid is dissolved releasing the core.

The phase of viral replication in which the vius enters the host cell.

The protein coat surrounding the viral nucleic acid

the antigentic drift occuring in some viruses is responsible for repeated _______

Bacteriophage DNA that is permanetly incorporated into the DNA of a bacterial cell

Glycoproteins occurring on the capsid or envelope that function in the attachment of the cirus to the host cell membrane

The nucleic acid in viruses is called the ________

A culture medium for viruses

Changes in viral structure due to frequent spontaneous mutations

Organisms (ie:viruses) that are unable to multiply outside a host cell

In order for adsorption to occur the viral spikes must be _________ to the receptor sites on the host cell

Viruses must obtain this from the host cell.

The movement of neoplastic cells from one part of the body to another resulting in the formation of a secondary tumor.

The viral core may consist of DNA or ______

A virus that infects bacterial cells

The process during which viruses acquire their envelope

The phage of viral replication in which mature virus particles leave the host cell

A cancer causing gene

RNA virus capable of transcribing their RNA into DNA in the host cell's cytoplasm

The bacteriophage is an example of a _______ shaped virus.

The condition that occurs when a provirus becomes permantely incorporated in the host cells DNA remains dormant and is inherited by all daughter cells

The helical shaped, hollow structure that is part of a bacteriophage

Granules occurring in the cytoplasm or nucleus of a viral infected host cell at the site of viral replication

The accumulation of abnormal or transformed cellse

In order to infect a bacterial cell the tail of the bacteriophage must attach to the _______ _________

The enzyme produced by the retoviruses

Viruses are measured in this unit

Method of release for bacterial viruses and some animal viruses

Subunits of the capsid

Capsomers are formed of chains of identical ______ _______

Viruses that lack an envelope are called ________ viruses

Condition that occurs when a prophage is expressed giving the bacterial cell a new, different property (the ability to produce disease)

a culture medium for viruses consisting of viable animal cells.

A coiled or corkscrew shaped virus

Viral DNA that has become permanently incorporated into the DNA of a host cell is called a _________

Infections that occur as a result of repeated activation of a lysogenic provius which enters the lytic cycle

Viable viruses that are weakened unable to produce disease

Condition that occurs when viruses cross the placenta and infected the fetus

RNA viruses are replicated and assembled in this are of the host cell

The phase of viral replication in which viral components are assembled into complete virus particles

A virus whose capsid is composed of 20 equilateral triangles

Due to their simple structure viruses are described as _________ organisms

Viral proteins are produced at these host cell structures

A tumor that is often nonencapsulated invasive and frequency metatasizes

A common use of attenuated viruses

Soluble substances often produced as a result of lysogenic conversation in bacteria

The phase of viral replication in which viruses adhere to the host cell membrane

Type of viral reproductive cycle which results in the lysis of the infected host cell

the virus envelope in derived from this part of the host cell

A type of CPE consisting of areas in the monolayer of host cells where the multiplying viruses have lysed the cells

An encapsulated, noninvasive tumor

A single virus particle

The polyhearl structure of a bacteriophage surrounding the viral DNA