8.L.1.2

How are quarantines used to slow the spread of an epidemic?

• Quarantine prevents individuals from eating food that is potentially contaminated

• Quarantines allow enough time for antibiotics to take effect in infected individuals

• Quarantines keep infects individuals separate so they cannot pass the disease to others

• Quarantines keep people inside their homes so that family members can provide care for each other

Which is distinction between an epidemic and a pandemic?

• the symptoms of the disease

• the geographical area affected

• the species of organisms infected

• the season in which the disease spreads

The Spanish Flu of 1918 occurred during World War I and killed between 30 to 50 million people worldwide. Which best explains the spread of this virus?

• The Spanish Flu quickly became a pandemic due to the close quarters and distances traveled by troops.

• The Spanish Flu quickly became an epidemic due to the close quarters and distances traveled by troops.

• The Spanish Flu quickly became a pandemic due to the lack of antibiotics and poor hygiene of the troops.

• The Spanish Flu quickly became an epidemic due to the lack of antibiotics and poor hygiene of the troops.

How is the prevention of an epidemic different from the prevention of a pandemic?

• Preventing an epidemic requires the use of antibiotics, while preventing a pandemic requires the use of vaccines.

• Preventing a pandemic requires uninfected and infected people to wash their hands, while preventing an epidemic requires people to wear gloves.

• Preventing a pandemic requires vaccinating large numbers of people dispersed over a wide geographic area, while an epidemic requires vaccinating fewer people spread over a smaller area.

• Preventing an epidemic requires vaccinating large numbers of people spread over a wide geographic area, while a pandemic requires vaccinating fewer people spread over a smaller area.

Which is the most likely reason bacteria populations do not grow at exponential rates in nature?

• Conditions necessary for growth occur for a long time.

• Conditions necessary for growth occur only for a short time.

• The environment changes, and conditions are always favorable.

• The environment changes, and conditions are not always favorable.

The 2003 SARS (sudden acute respiratory syndrome) virus was contained to about 8000 cases, mostly in Asia. Which is the best explanation for the prevention of a pandemic?

• Infected people in Asia were given massive doses of antibiotics to kill the virus and prevent it from spreading beyond Asia.

• Travel from Asia to other countries was halted for several weeks to prevent further spread of the virus beyond Asia.

• Travel from Asia to other countries was increased for several weeks to prevent the spread of the virus beyond Asia.

• Infected people were given vaccinations to kill the virus and prevent it from spreading beyond Asia.

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.

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

• bacteria

• fungi

• protist

• viruses

Which will most likely occur when the quality of sanitation in an area improves?

• The number of disease carriers will increase.

• The number of infectious disease cases will decrease.

• The amount of available food resources will decrease.

• The amount of necessary medical treatment will increase.

Which best distinguishes an infectious disease from a noninfectious disease?

• Infectious diseases can be cured with antibiotics; noninfectious diseases cannot.

• Infectious diseases can be prevented with vaccines; noninfectious diseases cannot.

• Infectious diseases can be spread from one organism to another; noninfectious diseases cannot.

• Infectious diseases cannot be transmitted from one organism to another; noninfectious diseases can.