Microbes and Disease Review

Which term is used to describe all disease-causing microorganisms?

• bacteria

• parasites

• viruses

• pathogens

Which factor does not increase the rate of disease?

• increased contact with others

• increased exposure to vectors

• vaccinations

• dirty living conditions

This graph represents the reproduction rate of which organism?

• parasite

• fungi

• virus

• bacteria

Twenty people become sick with the flu after attending a school dance. Which is the best scenario to explain why people got sick?

• contact with an infected animal

• contact with a contaminated object

• contact with an infected person

• contact with environmental sources

Which best contrasts a bacterial cell and a virus?

• A bacteria cannot reproduce independently, whereas a virus can reproduce independently.

• A bacteria is a unicellular organism that reproduces through binary fission, whereas a virus is considered non-living and requires a host cell to reproduce.

• A bacteria requires a host cell to reproduce, whereas a virus can reproduce independently.

• A bacteria is a non-living organism, whereas a virus is a uni-cellular organism.

West Nile Horse Virus Disease is a mosquito-borne viral disease. Since 2002 the number of cases has dropped dramatically. What is most likely the cause for the drop in cases?

• a vaccine available to protect horses

• a change in the types of horses living in the area

• a vaccine that protects mosquitos

• a change in the number of horses in the area

Which type of organism can be spherical, rod shaped, or spiral shaped?

• viruses

• eukaryotes

• bacteria

• parasites

What is the difference between an infectious disease and a non-infectious disease?

• Infectious diseases can be prevented, non-infectious diseases cannot.

• Infectious disease can be cured, non-infectious disease cannot.

• Infectious diseases can be transmitted from one organism to another, non-infectious diseases also can.

• Infectious diseases can be transmitted from one organism to another, non-infectious diseases cannot.

In 2009, a type of flu called swine flu started in Mexico and then spread to the United States and other countries around the world. The swine flu was considered a/an:

• epidemic

• outbreak

• pandemic

• isolated case

Plasmodium is a protozoan parasite that causes malaria. Which organism is known to carry this protozoan?

• tick

• mosquito

• flea