Viruses: Question Preview (ID: 14315)

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Some viruses must insert their genetic material into the host cell's DNA. This is accomplished thanks to enzymes. The virus benefits from this action by
a) acquiring the traits of the host cell
b) changing the host cell into a virus
c) causing the host cell to produce new viruses
d) introducing random deadly mutation into the host cell

Some viruses are responsible for cancer in humans. This is due to
a) production of viral fluids in the bloodstream.
b) fermentation of acids in the digestive system.
c) destruction of cells by viral reproduction.
d) stimulation of muscle tone in the heart.

Some diseases are caused by bacteria, protists, invertebrates or viruses. How do diseases caused by bacteria and diseases caused by viruses react to antibiotics?
a) Both respond to antibiotics
b) Neither responds to antibiotics
c) Bacterial disease respond to antibiotics, viral disease do not.
d) Viral diseases respond to antibiotics, bacterial diseases do not.

Viruses and bacteria are both microscopic and can both cause disease. Viruses differ from bacteria in that all viruses
a) have cell walls
b) need a living host cell to reproduce
c) cause insect transmitted diseases
d) can be destroyed by antibiotics

When a virus invades a host the most common threat is
a) stimulation of muscle tone in the heart.
b) destruction of cells by viral reproduction.
c) production of viral fluids in the bloodstream.
d) fermentation of acids in the digestive system.

All of the following are considered classification groups of viruses except
a) DNA viruses
b) retroviruses
c) RNA viruses
d) lysogenic viruses

Viruses have a core made up of everything listed here except
a) plasmids
b) genetic material
c) DNA
d) RNA

How might a disease-causing virus be similar to a computer virus?
a) both are small
b) neither impact humans
c) it is difficult for them to spread
d) neither are dangerous

Vaccines prevent disease by
a) bringing bacteria to infect healthy cells
b) containing specific T lymphocytes
c) combining with pathogens to inactivate them
d) preparing the immune system to recognize and destroy pathogens.

Which event listed is most likely to cause a widespread influenza outbreak?
a) The northern portion of the country is affected by winter-like weather patterns.
b) People do not have immunity to a new strain of the influenza virus.
c) The influenza virus is recognized by host immune systems.
d) Winter precipitation is increased due to global warming.

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