Viruses Post-Test Part 2 Of 2 Question Preview (ID: 31479)

Spring Final 2016. TEACHERS: click here for quick copy question ID numbers.

Which of the following occurs in cells but not in viruses?
a) protein synthesis
b) DNA replication
c) both A and B
d) neither A or B

Which of the following cannot be found in a virus?
a) DNA
b) RNA
c) proteins
d) nucleus

Which of the following gives the best explanation as to why host cells die rapidly during a lytic infection?
a) viruses involved in lytic infections tend to mutate more quickly
b) the host cell fills with new virus and bursts open
c) the virus incorporates its genes into the DNA of the host cell
d) lytic infections often attack cells of the immune system

Viruses have which of the following components?
a) nucleus
b) genes
c) ribosome
d) cell wall

Viruses do not have ribosomes, therefore they cannot make ______ on their own.
a) proteins
b) ADP
c) ATP
d) glucose

Why do viruses go dormant if they are outside of a host for a length of time?
a) the protein coating shrivels when it cannot find any other viruses nearby
b) without the ATP provided by the host cell, viruses do not have any energy
c) they cannot replicate without the organelles in a host cell
d) hey become dried out when not in contact with body fluids

Which of the following best describes the evolutionary advantage of dormant states in viruses?
a) viruses can survive while waiting to come in contact with other viruses
b) viruses can survive periods of dormancy by creating their own DNA
c) viruses can go through several mutations while in a dormant state
d) viruses can survive while waiting to come in contact with a host to infect

Which of the following best describes the contents of a flu vaccine?
a) medicine that activates if the flu virus becomes present in a host
b) a virus that attacks the flu virus
c) bacteria that distract the flu virus from attacking the host's cells
d) deactivated particles of the flu virus

Why do viral mutations pose such a threat to human health?
a) When something mutates it always gains characteristics that make it stronger.
b) Viral mutants can survive longer periods of dormancy.
c) Viruses mutate faster than the human immune system can build antibodies.
d) When something mutates it always gains characteristics that make it stronger.

Charles Chamberland, a French microbiologist, invented a filter in 1884 that allowed for the separation of bacteria from viruses. His invention was a turning point in the study of viruses. What property of viruses allowed Chamberland’s filter to wo
a) Viruses are much smaller than bacteria.
b) Viruses can cause disease in both plants and animals.
c) Viruses reproduce in a much different way than bacteria reproduce.
d) Viruses, unlike bacteria, are not alive.

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