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The site where the old DNA strands separate and the new DNA strands will be synthesized is called the
Agents that can denature microbial proteins include all of the following (moist heat, alcohol. acids, metallic ions, x rays) except
____is a control method that removes microorganisms rather than inhibiting or killing them
Name the four major subdivisions of activity found in the bacterial growth curve
Lag, Loq, Stationary, decline
Why is the normal process of bacterial chromosomal replication called the semi-conservative method of replication?
One parental strand pairs with one new strand. One strand is conserved
If it was not for ethylene oxide, we would not be able to use plastic Petri dishes for culturing bacteria
A septicemic state in a patient refers to the presence of a pathogenic organism in the bloodstream that is the cause of the disease
Name the two options or cycles that bacteriophages may excercise when infecting a host cell
Lytic cycle, lysogeny cycle
___is a halogen used in gaseous and liquid form for large scale disinfection of drinking water and sewage
X rays are known as a form of ionizing radiation because
they cause the cell to lose electrons which creates an ion
___solution was introduced in the late nineteeth century for treating syphillis infections
The three types of filtration that are used for sterilization are
inorganic filtration, membrane filtration, organic filtration
In the process or autoclaving material, it is the ___ that is the sterilizing agent, not the ___.
List the three basic physical requirements that must be met for successful sterilization using the autoclave
15 minutes, 121.5 C, 15 pounds per square inch
Virulence factors include all the following except (capsules, ribosomes, exoenzymes, endotoxin, exotoxin)
What are the two major drawbacks for the use of penicillin
Allergic reaction can occur, immunity to penicillin if used too much
Name the three forms of bacterial recombination that may occur
Conjugation, transduction, transformation
DNA fragments pass through cell wall and plasma membrane of recipients. enzyme degrades one parent strand
A disease that has a steady frequency over time in a particular geographic location is an ____
Why can 1.5 mm of DNA fit into a cell that is only .5um
DNA is in a loop structure and chromosomes attach to each other at anchorage points that result in a flower structure
Name the 5 typical stages of an infectious disease
Incubation, prodrome, acme, decline, convalescence
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