Ch. 17 Viruses Flashcards
The protein shell enclosing the viral genome
Capsid
Individual protein subunits making up the capsid
Capsomeres
An infectious particle consisting of Nucleic acid enclosed in a protein coat and surrounded by a membranous envelope
Viruses
Derived from the membranes if the host cell and contains host cell phospholipids and membrane proteins
Viral envelopes
Viruses that infect bacteria
Bacteriophages; phages
Viruses ONLY replicate in…
Host cells
number of host species
Host range
A phage replicative cycle that culminates in death of the host cell
Lyric cycle
A phage that replicates only by lytic cycle
Virulent phage
Restricts the ability of the phage to infect the bacterium
Restriction enzymes
Cycle that allows replication of phage genome without destroying the host
Lysogenic cycle
Phages capable of using both modes of replication within a bacterium
Temperate phages
When a phage is integrated into a bacterial chromosome through lysogenic cycle
Prophage