Question

1. Giardiasis is an intestinal parasite that can transmitted through person-to-person contact and infested swimming pools. This parasite is best classified as (Select one:)

a. inherited.

b. contagious.

c. iatrogenic.

d. nosocomial.

e. asymptomatic.

2. Studies have found that lab coats are typically washed every 1 to 2 weeks. These lab coats often contain harmful germs that can be transmitted to patients during routine examinations. If this happens, the infection would be considered (Select one:)

a. iatrogenic.

b. zoonotic.

c. congenital.

d. asymptomatic.

e. vector associated.

f. healthcare associated.

3. Pregnant women are often cautioned against cleaning cat litter boxes. This is because Toxoplasma, an intestinal parasite of cats, can be transmitted from infected feces to the expectant mother and ultimately to the fetus. For these reasons, Toxoplasma is considered

a. a zoonotic disease.

b. a noninfectious disease.

c. an addictive disease.

d. a nosocomial disease.

e. a communicable disease.

f. a necrotizing disease.

4. To date, there is no cure for HIV. Because of this, the will be present in an infected individual throughout their lifetime. This makes HIV a (Select one:)

a. chronic disease.

b. nosocomial disease.

c. zoonotic disease.

d. convalescent disease.

e. latent disease.

5. The attachment of a pathogen to host cells requires that (Select one:)

a. the resident microbiota be unbalanced.

b. pathogen toxins enter the cell by endocytosis.

c. pathogen adhesins bind specifically to host glycoproteins.

d. host antibodies attach to the pathogen adhesins.

6. Which statement best explains why the virus that causes dog flu does not infect humans? In other words, why is this type of flu specific to dogs? (Select one:)

a. The dog flu virus does not often come into contact with human cells.

b. The toxins produced by the dog flu virus are not toxic to human cells.

c. The replication cycle of dog flu virus is must slower inside a human cell.

d. The dog flu virus interacts specifically with receptors on the surface of dog cells.

7. According to the World Health Organization (WHO), an estimated 240 million people are chronically infected with hepatitis B. This number describes hepatitis B's (Select one:)

a. mortality.

b. prevalence.

c. virulence.

d. incidence.

8. What is a notifiable disease? (Select one:)

a. A disease that has a high mortality rate

b. A disease that must be reported to the CDC.

c. A disease that is suspected to be caused by terrorists.

d. A disease that is highly contagious.

9. John Snow studied cholera in London in the 1800s. He determine that the source of this epidemic was a contaminated well. In this example, the contaminated well was the  (Select one:)

a. carrier.

b. host.

c. pathogen.

d. reservoir.

10. Mosquitoes are responsible for transmitting the zika virus. In this case, the mosquitoes are

Select one:

a. pathogens.

b. biological vectors.

c. the disease.

d. asymptomatic transmitters.

e. active carriers.

Answer 1

1: B. Contagious

Since Giardiasis can transmitted through person-to-person contact and infested swimming pools; it is contagious. The contagious parasites spread from one person to other by direct contact.
Inherited parasites are transmitted from one generation to next. Iatrogenic parasites are the one that are carried from one person to next due to some medical errors. Nosocomial parasites transmit in hospitals, Asymptomatic parasites are the one that do not cause any symptom upon infection.