Viruses And Bacteria Question Preview (ID: 8066)

Review Questions.[print questions]

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.

How might a disease-causing virus be similar to a computer virus?
a) neither impact humans
b) neither are dangerous
c) both can spread easily
d) none of the above

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

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.

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.

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 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 mutations into the host cell.

In which infection cycle does the virus remain dormant?
a) cell cycle
b) protein synthesis
c) lytic cycle
d) lysogenic cycle

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.

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 respond to antibiotics
c) Bacterial diseases respond to antibiotics, viral diseases do not
d) Viral diseases respond to antibiotics, bacterial diseases do not.

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