Study sets, textbooks, questions
Upgrade to remove ads
Exam 3 review part 1
Terms in this set (38)
A piece of medical equipment is heat-sensitive and water-sensitive. The best method of sterilization for this equipment would be
treatment with a gaseous agent like ethylene oxide
An antimicrobial drug that blocks the transport of NAG and NAM from the cytoplasm is targeting which of the following cellular processes?
cell wall synthesis
An antimicrobial disk on a Kirby-Bauer plate that shows no zone of inhibition indicates that the microbe being tested is __________ to the drug.
Inhibiters of DNA synthesis specifically effective on prokaryotes are
The majority of broad spectrum antibacterial medications inhibit _________ synthesis.
Second-generation drugs are semisynthetic drugs developed to combat _________ against an existing drug.
Some bacterial cells are resistant to a variety of antimicrobials because they actively pump the drugs out of the cell.
Alterations in the structure of which of the following are an important aspect of Gram-negative bacterial resistance to antimicrobial drugs?
Which of the following can result when antibiotic therapy disrupts the normal microbiota?
both pseudomembranous colitis and thrush
Factors in the evolution of antibiotic resistance in bacteria
-Due to natural genetic variation within populations, resistant bacteria will be present--even in the absence of antibiotic.
-Resistance can emerge due to mutations in chromosomal genes.
-Bacteria can acquire plasmids conferring resistance through horizontal gene transfer.
Factor NOT part of the evolution of antibiotic resistance in bacteria
The exposure of bacteria to an antibiotic causes the bacteria to produce resistance genes.
Novel antimicrobials produced by bacteria in a remote area of a temperate rainforest in the Pacific Northwest have been discovered.
Which of the following terms would accurately describe this drug?
Which of the following statements most accurately describes the principle of selective toxicity?
the ability of an antimicrobial to kill microbes with minimal damage to the host
A new drug blocks the adhesins on the surface of a bacterial pathogen. What would likely be the major effect of this drug?
It will prevent infection by this pathogen.
Infection and disease are NOT the same thing because __________.
one can be infected without showing any signs or symptoms of disease
A patient's immune system is typically fully responsive during which of the following stages of disease?
An epidemiologist collects drinking glasses, tissues, and bed sheets from the apartment of an individual infected with a particular disease. Which of the following modes of transmission is being investigated for this disease?
indirect contact transmission
Fecal-oral infections are usually a result of __________.
Which of the following might result in a nosocomial infection (HAI)?
a hospital aide forgetting to wash his or her hands before tending a patient
The bacterium that causes tuberculosis can be expelled from the lungs by a cough and remain viable in the air for an hour or more. If a person inhales the bacteria from the air, what type of transmission has occurred?
A person is exposed to desert air containing fungus spores and develops valley fever as a result. Valley fever is an example of a ________ disease.
Toxins that affect the lining of the gastrointestinal tract are
Rubella, or three-day measles, passes through the _______ route to establish congenital infection of a fetus.
Nervous system function may be impaired by the action of
Lipid A is a(n) ________ that stimulates the body to release chemicals that cause fever, inflammation, diarrhea, hemorrhaging, shock, and blood coagulation.
Normal microbiota may cause disease if they are introduced into an unusual site in the body.
There were 100 new cases of syphilis last year in a given population of 100,000 people. At that time, 500 people in this population already had syphilis. The incidence of syphilis in this population is __________.
100 per 100,000
What is microbial antagonism?
the ability of the normal flora to outcompete and outgrow pathogens
What is a superinfection?
a disease caused by an organism that is often an opportunist or one that was present in low numbers. It is a sequel to removal of the normal flora by antibiotic treatment.
What causes thrush?
Candida albicans, especially in patients taking antibiotics. Antibiotics kill off the normal bacterial flora, and then the yeast can proliferate.
Which of the following classifications would best describe Candida albicans?
a unicellular chemoheterotroph that has a nucleus
If the patient were to get a subsequent urinary tract infection, what should the doctor prescribe knowing that she is susceptible to thrush?
The doctor should prescribe an antibiotic specific for the bacterial species causing the urinary infection.
A strain of Neisseria gonorrhea has a mutation which has caused it to lose the ability to produce fimbriae and become less virulent as a consequence. What function has this pathogen lost?
the ability to adhere to cells of the body
Rabies is an example of a zoonosis that is hard to control because __________.
its reservoir contains both domestic and wild animals
All of the following might lead to a disease caused by an opportunistic pathogen EXCEPT __________.
an encounter with an infected animal
May lead to a disease caused by an opportunistic pathogen
-changes in diet
Microbes known as transient microbiota are
organisms that remain in the body for a short time
The degree to which a microbe is able to cause disease is known as its
Sets found in the same folder
Exam 3 review part 2
Exam 3 Study Guide CH 14 & 15
Exam 3 Study Guide CH 16
Exam 3 Study Guide CH 17
Other sets by this creator
Lipid Lowering Agents for CAD
Fluid & Electrolytes CH 13
Other Key Terms
Other Quizlet sets
Accounting - D196 - other notes/questions
Problem Set #7
APES All Review