microbiology chapter 14 potential test questions
in which type of symbiosis do both members benefit from their interaction?
An axenic environment is one that _____________.
b. contains only one species
which of the following is false concerning microbial contaminants?
b. most microbial contaminants will eventually cause harm
the most frequent portal of entry for a phogen is __________
a. respiratory tract
the process by which microorganisms attach themselves to cells is __________.
which of the following is the correct sequence of events in infectious diseases?
a. incubation, prodromal period, illness, decline, convalescence
which of the following are most likely to cause disease?
d. highly virulent organisms
the nature of bacterial capsules ____________
c. affects the virulence of the bacteria
when pathogenic bacterial cells lose the ability to make adhesins, they typically _____________
a. become avirulent
a disease in which a pathogen remains inactive for a long period of tiem before becoming active is termed a(n) ________
d. latent disease
Which of the following statements is the best definition of a pandemic disease?
Which of the following types of epidemiologists is most like a detective?
b. analytical epidemiologist
consider the following case. An animal was infected with a virus. A mosquito bit the animal, was contaminated with the virus, and proceeded to bite and infect a person. Which was the vector?
a patient contracted athlete's foot after long-term use of a medication. His physician explained that the malady was directly related to the medication. Such infections are termed __
d. endogenous infection
Which of the following phrases describes a contagious disease?
b. a disease that is easily passed form host to host in aerosols
A microbe that causes disease is called a ________________
an infection that may go unnoticed because of the abscence of symptoms are called __________
asymptomatic or subclinical
the study of the cause of a disease is ______________
the study of where and when diseases occur and how they are transmitted whithin populations is _____________
diseases that are naturally spread from their usual animal hosts to humans are called _____________
nonliving reservoirs of disease, such as a toothbrush, drinking glass, and needle, are called _______________
____________ infections are those acquired by patients or staff while in health care facilities
the total number of cases of disease in a given area is its ___________
an animal that carries a pathogen and also serves as host for the pathogen is a ___________ vector
Endotoxin, also know as __________, is part of the outer (wall) membrane of Gram-negative bacteria.