A membranelike layer that covers the capsids of some viruses
What is envelope
100
A circular shaped virus
What is spherical
100
A virus whose replication includes the Lysogenic cycle
What is temperate virus
100
Prions convert normal brain proteins into ____ particles
What is prion
100
____ are not alive because they do not grow, lack cell parts, and do not metabolize
What is viruses
200
A protein sheath that surrounds the nucleic acid core in a virus
What is capsid
200
A spiral shaped virus
What is helical
200
A method of viral replication in which a viral genome is replicated as a provirus without destroying the host cell
What is Lysogenic cycle
200
Viroids infect
What is plants
200
Viruses can reproduce only within ____ cells
What is host
300
Viral DNA that has attached to a host cell's chromosome and that is replicated with the chromosome's DNA
What is provirus
300
Bilipid membrane that surrounds the capsid
What is envelope
300
A method of viral replication that results in the destruction of a host cell and the release of many new virus particles
What is the Lytic cycle
300
A viroid is made up of a short, circular, _____ _____ of RNA
What is single strand
300
The grouping of viruses is based on the type of ____ they infect
What is organism
400
A virus that contains single-stranded RNA and produces a reverse transcriptase, which converts RNA to DNA
What is retrovirus
400
A protein coat
What is a capsid
400
Describes a microorganism that causes disease and that is highly infectious; strictly, refers only to viruses that reproduce by the Lytic cycle
What is virulent
400
Infectious protein particles that do not have a genome
What is prion
400
The enzyme reverse transcriptase uses RNA as a template to make ____
What is DNA
500
An enzyme that catalyzes the formation of DNA from RNA template
What is reverse transcriptase
500
A capsid who's shape has 20 triangular faces and 12 corners
What is icosahedron
500
The viral genome of bacteriophage that has entered a bacterial cell, has become attached to the bacterial chromosome, and is replicated with the host bacterium's DNA
What is Prophage
500
The smallest known particles that are able to replicate
What is viroids
500
Phage DNA that is integrated into a host cell's chromosomes is a _____