MasteringMicrobiology – Ch. 24 HW – Flashcards
8 test answers
Unlock all answers in this set
Unlock answers 8question
What are some of the current challenges to production of the influenza vaccine? Select all that apply. a. The virus undergoes antigenic changes on a regular basis. b. The production of vaccine is a lengthy process. c. Production is difficult because the vaccine is composed of all important strains identified during the previous flu season. d. The vaccine does not stimulate a strong antibody response because it is an intracellular pathogen. e. In order to yield a vaccine, the virus must be produced in eggs.
answer
a,e
Unlock the answer
question
Predict which of the following would be outcomes of treatment with Tamiflu. Select all that apply. a. overall decrease in the replication rate of influenza b. decreased ability of influenza to attach to host cells c. a decrease in the release of viral particles from the cell d. decreased production of the NA protein by the host cell e. an increase in the ability of the immune system to combat the infection
answer
a,c,e
Unlock the answer
question
Why are poxviruses frequently used in vaccinations and gene therapy? a. They can last outside the body for a very long time. b. They are large viruses that make useful vectors. c. They are not enveloped, so they are easy to manipulate. d. They can infect many different types of species.
answer
b
Unlock the answer
question
Smallpox (Orthopoxvirus variola) is the first human disease considered to be globally eradicated. All of the following factors played a huge role in its eradication EXCEPT for __________. a. the removal of animal reservoirs in nature b. rapid diagnosis due to obvious signs and symptoms c. the existence of an inexpensive, effective vaccine d. the fact that there are no asymptomatic carriers, so the disease is always diagnosable
answer
a
Unlock the answer