MICRO TEST 3 DR AL LSUE
COMPREHENSIVE EXAM STUDY GUIDE
FULL QUESTIONS AND CORRECT ANSWERS
⩥ The LD50 is a
Answer: dose that will kill 50% of the test population
⩥ which of the following contribute to a pathogen's invasiveness?
Answer: all of these (capsule, cell wall, hyaluronidase)
⩥ Which of the follow statements about exotoxins is generally true?
Answer: They have specific methods of action
⩥ The organism that has a parasite living within it is the
Answer: Host
⩥ The period with the least degree of symptoms is the _________
period.
Answer: incubation
, ⩥ _________ immunity is an epidemilogical concept that explains the
resistance of a population to infection and the spread of an infectious
organism due to the immunity of a high percentage of the population.
Answer: Herd
⩥ A nosocomial infection is
Answer: Always acquired during the course of hospitalization
⩥ Which of the following is not a reservoir of infection
Answer: none
⩥ The most frequently used portal of entry for pathogens is the
Answer: mucous membrane of the respiratory tract
⩥ Diseases of animals that can be transmitted to humans are so called
Answer: zoonoses
⩥ Any microorganism that spends a portion of its life associated with
another organism of a different species is engaged in
Answer: Symbiosis
⩥ Which of the following is a major focus on epidemiologists?
COMPREHENSIVE EXAM STUDY GUIDE
FULL QUESTIONS AND CORRECT ANSWERS
⩥ The LD50 is a
Answer: dose that will kill 50% of the test population
⩥ which of the following contribute to a pathogen's invasiveness?
Answer: all of these (capsule, cell wall, hyaluronidase)
⩥ Which of the follow statements about exotoxins is generally true?
Answer: They have specific methods of action
⩥ The organism that has a parasite living within it is the
Answer: Host
⩥ The period with the least degree of symptoms is the _________
period.
Answer: incubation
, ⩥ _________ immunity is an epidemilogical concept that explains the
resistance of a population to infection and the spread of an infectious
organism due to the immunity of a high percentage of the population.
Answer: Herd
⩥ A nosocomial infection is
Answer: Always acquired during the course of hospitalization
⩥ Which of the following is not a reservoir of infection
Answer: none
⩥ The most frequently used portal of entry for pathogens is the
Answer: mucous membrane of the respiratory tract
⩥ Diseases of animals that can be transmitted to humans are so called
Answer: zoonoses
⩥ Any microorganism that spends a portion of its life associated with
another organism of a different species is engaged in
Answer: Symbiosis
⩥ Which of the following is a major focus on epidemiologists?
