Answer Choices:
A. any disease caused by a prion
B. any disease of public health importance*
C. any disease that is highly infectious
D. any disease with a high ID50
Answer:
B
Question: Antibodies are produced by which type of white blood cell?
Answer Choices:
a. neutrophils
b. lymphocytes
c. eosinophils
d. basophils
Answer:
b
Question 163:
Which statement about the structure of the heart is accurate?
Answer Options:
a. The superior and inferior venae cavae enter the left atrium, and the pulmonary veins enter the right atrium.
b. The superior and inferior venae cavae enter the right atrium, and the pulmonary veins enter the left atrium.
c. The superior and inferior venae cavae enter the left ventricle, and the pulmonary veins enter the right ventricle.
d. The superior and inferior venae cavae enter the right ventricle, and the pulmonary veins enter the left ventricle.
Correct Answer: b
Question 164:
Which part of the cardiovascular system brings blood into the right atrium of the heart?
Answer Options:
a. coronary artery
b. pulmonary artery
c. superior vena cava
d. septum
Correct Answer: c
Question 165:
Deoxygenated blood flows through the pulmonary structures in what order?
Answer Options:
a. pulmonary trunk → pulmonary semilunar valve → pulmonary arteries
b. pulmonary trunk → pulmonary arteries → pulmonary semilunar valve
c. pulmonary semilunar valve → pulmonary arteries → pulmonary trunk
d. pulmonary semilunar valve → pulmonary trunk → pulmonary arteries
Correct Answer: a
Question: Bacteria, fungi, and protozoa often use similar virulence factors and mechanisms of pathogenicity.
Answer:
True
Question: Which of the following is the definition of pathogenicity?
Answer Choices:
A. the ability of a microbial agent to cause disease*
B. the ability of a microbial agent to cause infection
C. the ability of a microbial agent to prevent disease
D. the ability of a microbial agent to produce an antimicrobial compound
Answer:
A
Question: ________ is a yellowing of the skin and eyes due to the lysis of erythrocytes resulting from infection with either hepatitis B virus or Plasmodium falciparum.
Answer:
Jaundice
Question: Identify which pathogen is the least virulent on the basis of ID50.
Answer Choices:
A. pathogen A with an ID50 of 1000 cells*
B. pathogen B with an ID50 of 50 cells
C. pathogen C with an ID50 of 1 cell
D. pathogenicity cannot be determined from ID50 values
Answer:
A
Question: Florence Nightingale’s 1958 book included graphs showing that many casualties she observed were due to which of the following?
Answer Choices:
A. helminths contracted on the battlefield
B. preventable infectious diseases*
C. wounds sustained in combat action
D. prions
Answer:
B
Question: Dying blood cells are phagocytized by Kupffer cells in the
Answer Choices:
a. lungs.
b. kidneys.
c. liver.
d. stomach.
Answer:
c
Question: In what type of condition is aldosterone secreted?
Answer Choices:
A. low blood pressure
B. low glucose level
C. high inflammation
D. high CO2 levels
Answer:
A. low blood pressure
Question: What is the toxic component of endotoxin?
Answer Choices:
A. lipid A*
B. the core oligosaccharide
C. the O-antigen
D. the peptidoglycan subunits
Answer:
A
Question: Joseph Lister required surgeons to use _______ when washing hands and cleaning surgical tools as a means of reducing nosocomial infections.
Answer Choices:
A. soap and water
B. alcohol
C. phenol (carbolic acid)
D. iodine
Answer:
C
Question: A health-care provider who does not have signs or symptoms of disease and is not infected but transmits a pathogen from one patient to another is said to be a(n) _______ carrier.
Answer Choices:
A. active
B. passive
C. incidental
D. asymptomatic
Answer:
B
Question: Which is the target for the diphtheria toxin?
Answer Choices:
A. charged tRNA molecules
B. elongation factor 2*
C. mRNA molecules
D. the eukaryotic ribosome
Answer:
B
Question: Which of the following is not a notifiable disease?
Answer Choices:
A. giardiasis
B. gonorrhea
C. MRSA*
D. Zika
Answer:
C
Question: Which of the following is not a function of the hepatocytes?
Answer Choices:
a) Synthesis of blood components
b) Reabsorption of nutrients
c) Inactivation of toxins
d) Bile production
Answer:
b) Reabsorption of nutrients
Question: Which pathogen cannot pass the blood–placenta barrier and infect a fetus?
Answer Choices:
A. Herpes simplex virus 1
B. Listeria monocytogenes
C. Salmonella typhi*
D. Toxoplasma gondii
Answer:
C
Question: In the A-B toxin, which subunit is necessary for making the initial attachment to the host cell?
Answer Choices:
A. the A subunit
B. the B subunit*
C. Depending on the toxin, it could be either the A or B subunit.
D. Neither, because A-B toxins do not function this way.
Answer:
B