Unit 5 Pathogens Review

Which sentence BEST describes a pandemic?

• The disease causes high fever and vomiting.

• The disease passes through direct contact with an infected person.

• The disease is fatal if not treated immediately.

• The disease has spread to every country in the Northern Hemisphere.

Which disease is correctly paired with the cause of the disease?

• athlete’s foot - fungi

• malaria - viruses

• influenza - bacteria

• pneumonia - protists

The symptoms of strep throat infection are a red and swollen throat. What is the MOST likely cause of strep throat?

• eating raw vegetables

• drinking lemonade

• invading bacteria

• running in cold weather

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

• a virus

• a bacterium

• a fungus

• a parasite

The bacteria that causes bubonic plague is transmitted to humans by fleas. Which term best describes the role of the fleas in transmitting bubonic plague?

• decomposer

• parasite

• pathogen

• vector

Why do doctors suggest that people get a flu vaccine each year?

• Viruses replicate more rapidly over time.

• Viruses can mutate from year to year.

• Vaccines are absorbed by the body after a year.

• Vaccines get stronger over time.

Which best explains how a virus infects its host?

• The virus must fuse with the cells of the host organism.

• The virus must circulate in the blood of the host organism.

• Viral nucleic acids must enter the cells of the host organism.

• Viral proteins must inactivate the proteins of the host organism.

Which aspect of modern life could MOST likely cause an epidemic to turn into a pandemic?

• vaccination

• transportation

• communication

• sanitation

Why are viruses considered to be nonliving organisms?

• They do not have genetic information.

• They are not able to move on their own.

• They do not interact with their environment.

• They are not able to reproduce without a host cell.

Millions of people living all over the world have cancer. Is cancer a pandemic?

• No, because cancer is not contagious.

• No, because cancer is not always fatal.

• Yes, because millions of people have cancer.

• Yes, because people all over the world have cancer.