Lesson 7

What is an aquifer?

• A type of freshwater lake

• A layer of earth or rock that contains freshwater

• A type of reservoir

• A form of runoff

What does a groundwater system use as its source?

• A river

• A lake

• An aquifer

• The ocean

What is the role of water in the transmission of waterborne diseases?

• Active carrier of the infectious agent

• Passive carrier of the infectious agent

• Neutralizer of the infectious agent

• Enhancer of the infectious agent

Which pathogen is discussed in the chapter on food safety?

• Shigella

• Adenoviruses

• Vibrio cholera

• Cyclospora cayetanensis

What type of organism is Cryptosporidium parvum?

• Bacterium

• Virus

• Protozoan

• Fungus

Which of the following is not a bacterial enteropathogen?

• Shigella

• Escherichia coli

• Vibrio cholera

• Adenoviruses

What type of location was associated with the 2007 outbreak in Idaho?

• A splash park

• A zoo

• A municipal water supply

• A swimming pool

What can contaminate water used for recreation and drinking?

• Sewage containing oocysts

• Chlorine

• Salt

• Sand

What is the main challenge in treating water contaminated with Cryptosporidium?

• Resistance to chlorine treatment

• High cost of treatment

• Lack of technology

• Limited water supply

What is an example of a water conservation measure in the domestic setting as discussed in the textbook?

• Watering your lawn on only even days

• Banning swimming pools

• Using only bottled water

• All of the above