Pathogens

Lyme disease is spread by ticks that attach to an animal to feed. Which describes the role of the tick?

• The tick is virus

• The tick is a donor

• The tick is a vector

• The tick is a bacteria

Which pathogen, by being the smallest, is able to spread and infect the greatest number of hosts?

• Bacteria

• Fungi

• Parasites

• Viruses

Five students get sick with a cold after a weekend field trip to the aquarium with their classmates. Which best explains why these students became sick?

• Contact with an infected fish

• Contact with an infected person

• Contact with contaminated food

• Contact with contaminated water

Which is the best explanation for why there is a continued need to develop new antibiotics to fight bacterial infections?

• Bacteria learn to avoid antibiotics that have been used for years.

• Drug companies want to sell as many drugs as they can to consumers.

• Bacteria are constantly mutating and developing resistance to antibiotics.

• Doctors need many drug options to treat many different patients with different characteristics.

What reason BEST explains why more people get colds in colder temperatures?

• Viruses need colder temperatures to survive.

• Colder temperatures cause people to stay inside, closer together.

• Viruses need colder temperatures to infect people.

• Colder temperatures lower a person's body temperature.

What condition is MOST likely to spread an illness between people?

• a virus suspended in the air

• an accident on a playground

• a genetic mutation in somatic cells

• an occurrence of acid rain

Diseases that can be transmitted between organisms are

• Infectious

• Inherited

• Environmental

• Congential

Which disease is correctly paired with the cause of the disease (or pathogen)?

• athlete’s foot - fungi

• malaria - viruses

• influenza - bacteria

• pneumonia - protists

Ten people became sick with the flu after attending a school dance. What is the scenario that could best explain how the people got sick?

• contact with environmental sources

• contact with an infected animal

• contact with a contaminated object

• contact with an infected person

Malaria is a common disease in many countries. What is the cause of this disease?

• a virus

• a bacterium

• a fungus

• a parasite