BIOLOGY - UNIT 6: MICROBIOLOGY
nucleoid
area of prokaryotic cell that is dense with genetic material
salinity
concentration of salt in water
normal flora
microorganisms commonly found living in or on a human
symbiosis
mutually positive relationship
During a latent infection caused by a virus, the viral replication is _________ until some outside stimulant causes the virus to enter the lytic cycle.
postponed indefinitely
A virion is able to recognize the correct host cell when the _________ of the host cell and the viral attachment protein of the virion match up
receptor site
lysis
rupturing of a cell
virologist
scientist who studies viruses
thallus
structure of an alga
Rickettsia is an example of an __________ which can only replicate inside a host cell.
obligate intracellular parasite
saprophyte
obtain food from dead organic material
Bacteria which are part of the normal flora may cause disease when the immune system is compromised. This ailment is called a(n) ________.
opportunistic infection
pathogen
organism which causes disease
parasite
organism which lives in or on another organism
host
organisms in which a parasite lives
viroid
pathogenic RNA molecule
prion
pathogenic abnormal protein structure
___________ is a group of bacteria that used to be classified as algae.
Cyanobacteria
_________ is the material found in the bacterial cell wall that forms a molecular basis of the Gram stain.
Peptidoglycan
phycology
the study of algae
Bacteria share genetic material through the processes called bacterial conjugation, transformation, and ___________.
transduction
Viruses which typically have a lipid covering called an envelope are released from the host cell through ___________.
viral budding
virion
virion
anaerobic
without free oxygen