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Viruses And Bacteria
Test Description: Review questions.
Instructions: Answer all questions to get your test result.
1) Which event listed is most likely to cause a widespread influenza outbreak?
A
People do not have immunity to a new strain of the influenza virus.
B
The northern portion of the country is affected by winter-like weather patterns.
C
The influenza virus is recognized by host immune systems.
D
Winter precipitation is increased due to global warming.
2) How might a disease-causing virus be similar to a computer virus?
A
none of the above
B
neither impact humans
C
neither are dangerous
D
both can spread easily
3) Viruses have a core made up of everything listed here except
A
plasmids
B
DNA
C
genetic material
D
RNA
4) Viruses and bacteria are both microscopic and can both cause disease. Viruses differ from bacteria in that all viruses
A
have cell walls.
B
can be destroyed by antibiotics.
C
need a living host cell to reproduce.
D
cause insect transmitted diseases.
5) Vaccines prevent disease by
A
preparing the immune system to recognize and destroy pathogens.
B
combining with pathogens to inactivate them.
C
containing specific T lymphocytes.
D
bringing bacteria to infect healthy cells.
6) Some viruses are responsible for cancer in humans. This is due to
A
fermentation of acids in the digestive system.
B
destruction of cells by viral reproduction.
C
production of viral fluids in the bloodstream.
D
stimulation of muscle tone in the heart.
7) 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
introducing random deadly mutations into the host cell.
B
acquiring the traits of the host cell.
C
changing the host cell into a virus.
D
causing the host cell to produce new viruses.
8) In which infection cycle does the virus remain dormant?
A
cell cycle
B
lytic cycle
C
lysogenic cycle
D
protein synthesis
9) When a virus invades a host the most common threat is
A
stimulation of muscle tone in the heart.
B
fermentation of acids in the digestive system.
C
production of viral fluids in the bloodstream.
D
destruction of cells by viral reproduction.
10) 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
Neither respond to antibiotics
B
Bacterial diseases respond to antibiotics, viral diseases do not
C
Viral diseases respond to antibiotics, bacterial diseases do not.
D
Both respond to antibiotics
*select an answer for all questions
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