Micro 8 Review

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D

Which one of the following is true of the influenza virus?

A. Transmission usually occurs by water contamination
B. The virion has no protein associated with it
C. The virion has no envelope
D. The virion undergoes antigenic variations

B

Guillain-Barré syndrome and Reye's syndrome are both

A. accompanied by massive amounts of virus in the brain tissue.
B. associated with influenza viruses.
C. due to adenoviruses.
D. viral diseases of the skin.

C

One of the reasons for the success of the smallpox eradication campaign was that

A. smallpox could be treated with antibiotics.
B. smallpox viruses were used in the vaccine.
C. smallpox occurred only in humans.
D. smallpox was not a transmissible disease.

B

The global eradication campaign for the elimination of smallpox

A. depended upon the elimination of arthropod vectors.
B. was completed in the 1970s.
C. required that all involved health workers receive the MMR immunization.
D. was led by Edward Jenner.

B

Viruses that have spikes on their envelopes and contain both hemagglutinin and neuraminidase cause

A. chickenpox.
B. influenza.
C. smallpox.
D. the common cold.

B

A drug thought to inhibit viral disease because it is a neuraminidase inhibitor is:

A. acyclovir.
B. zanamivir.
C. amantadine.
D. rimantadine

B

All of the following statements are associated with parainfluenza except

A. the parainfluenza virus is an RNA virus.
B. this is a disease associated with summer weather.
C. parainfluenza is generally a milder disease than influenza.
D. parainfluenza is most often seen in children under the age of 6.

C

A major abrupt change in hemagglutinin and neuraminidase antigens is called

A. antigenic drift.
B. Reye's syndrome.
C. antigenic shift.
D. croup.

A

A minor change in hemagglutinin and neuraminidase antigens is called

A. antigenic drift.
B. Reye's syndrome.
C. antigenic shift.
D. croup.

A

The type of change responsible to new flu viruses that cause pandemics is:

A. antigenic drift.
B. Reye's syndrome.
C. antigenic shift.
D. croup

C

The type of influenza virus that caused the pandemic in 1918 (i.e. The Spanish Flu) was:

A. Type B H1N1
B. Type A H1N2
C. Type A H1N1
D. Type A H5N1

D

The type of influenza virus that was discovered in Hong Kong in 1997 and is associated with the "Bird Flu" is:

A. Type B H1N1
B. Type A H1N2
C. Type A H1N1
D. Type A H5N1

D

The type of animal that serves as a "mixing vessel" for the creation of new influenza viruses:

A. Birds
B. Horses
C. Humans
D. Pigs

C

Which of the following in necessary the influenza virus to enter an epithelial cell in the human respiratory tract?

A. Matrix protein (M1)
B. Hemagglutinin (H)
C. Neuraminidase (N)
D. Nucleocapsid

A

An epidemic disease is one that

A. breaks out in explosive proportions in a population.
B. remains dormant in populations.
C. follows a primary infection.
D. is transmitted solely by arthropods.

D

Which one of the following is not a direct method of disease transmission?

A. Contact with feces
B. Particles of mucus expelled from the respiratory tract
C. Hand-shaking
D. Fomites

A

Carriers and reservoirs are both considered

A. capable of transmitting infectious disease.
B. direct methods for disease transmission.
C. opportunistic in the disease process.
D. contributors to period of acme in the disease.

A

A disease that develops rapidly, shows substantial symptoms, comes to a climax, and then fades, is a(n)

A. acute disease.
B. prodromal disease.
C. systemic disease.
D. chronic disease.

B

A scientist who studies the pattern of disease in a community and attempts to locate its source is called a(n)

A. pathologist.
B. epidemiologist.
C. microbiologist.
D. infectiologist.

D

A person who harbors a pathogen and a source of infection to the next person is best referred to as a(n)

A. acute source.
B. chronic source.
C. subclinical source.
D. carrier.

C

A disease that is usually present at a low level in a certain geographic area is said to be

A. epidemic.
B. pandemic.
C. endemic.
D. ubiquitous.

C

What specific job is this person fulfilling? She isolates the cause of an outbreak, prevents its spread, and gets out public health messages to people who could have been exposed.

A. Microbiologist
B. Biologist
C. Epidemiologist
D. Public health inspector

B

Which of the following is considered a new emerging infectious disease?
A. polio
B. SARS
C. smallpox
D. cholera

B

A disease that is worldwide like HIV/AIDS is said to be
A. epidemic.
B. pandemic.
C. endemic.
D. ubiquitous.

D

An abnormally high number of measles cases in one American city would be classified as a(an)
A. epidemic.
B. pandemic.
C. endemic.
D. outbreak.

A

Nosocomial infections account for an estimated 2 million infections and 90,000 deaths each year in the United States. Which of the following is not cause?
A. No methods to control air flow in hospitals
B. A high prevalence of pathogens in a hospital
C. A high number of patients who represent compromised hosts
D. Efficient mechanisms of transmission from patient to patient

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