SCIENCE QUIZ 4
nucleoid
area of prokaryotic cell that is dense with genetic material
salinity
concentration of salt in water
First, -blank- stain is applied, a series of rinses are used, and then a -blank- stain is applied. A -blank- bacteria culture will stain purple or blue, while a -blank- bacteria culture will stain pink.
crystal violet, safranine, Gram-positive, Gram-negative
Thermoacidophiles thrive in -blank- environments.
hot, acidic
The thread-like structures which are the building blocks of fungi are called
hyphae
Peptidoglycan
is the material found in the bacterial cell wall that forms a molecular basis of the Gram stain
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 -blank- 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 -blank- of the host cell and the viral attachment protein of the virion match up.
receptor site
One of the limitations of the light microscope is the
resolving power
lysis
rupturing of a cell
virologist
scientist who studies viruses
virion
single virus unit
thallus
structure of an alga
All known diseases cause by prions affect the -blank- of the host organisms.
nervous system
Rickettsia is an example of an -blank- 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 -blank-
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
e. release c. uncoating b. penetration d. replication a. attachment
picture thingy
The earth's ocean have a salinity of approximately 3.5% while the Dead Sea has a salinity of approximately -blank-
30%-35%
-blank- is a group of bacteria that used to be classified as algae.
Cyanobacteria
-blank- is composed of large deposits of the silicon exoskeletons of members of the phylum Bacillariophyta.
Diatomaceous earth
-blank- is caused by four known Plasmodium species which rely on a mosquito insect vector.
Malaria
phycology
the study of algae
Bacteria share genetic material through the processes called bacterial conjugation, transformation, and
transduction
Viruses which type have a lipid covering called an envelope are resealed from the host cell through -blank-
viral budding
anaerobic
without free oxygen