Microbes and Diseases

Many diseases are transmitted by sneezing. What must the droplets contain?

• disease-causing particles

• cells exposed to the diseases

• toxins released by diseased cells

• disease-specific antibodies

Which is the best way to help prevent the flu from becoming a pandemic?

• getting a vaccination

• taking antibiotics

• eating fruits and vegetables

• washing hands often

Which antibiotic was developed from a fungus and has been used to cure many illnesses that could have led to epidemics?

• aspirin

• ethanol

• penicillin

• acetaminophen

A mosquito can spread the West Nile Virus but remains unaffected by the disease. Which best describes the mosquito?

• vector

• mutagen

• pathogen

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

• a mosquito

• flea

• tick

After World War I, an outbreak of the Spanish flu killed 50 million to 100 million people around the world. Which best describes this occurrence?

• Epidemic, because it happened within a relatively short time span.

• Epidemic, because it affected many individuals in multiple countries.

• Pandemic, because it happened within a relatively short time span.

• Pandemic, because it affected many individuals in multiple countries.

Why are diseases transmitted through the bites of infected animals not considered contagious diseases?

• The infected animals do not show symptoms.

• The person in direct contact with the animal is the only one infected.

• Humans do not become sick from animal diseases.

• The diseases are treatable with antibiotics

The Black Plague killed about 100 million people in the fourteenth century. The bacteria that caused the plague was carried by fleas on rats and traveled great distances. Which would most directly limit the spread of the disease?

• cleaner water sources

• refrigeration of food and water

• garbage sanitation and rodent reduction

Which is an example of a parasitic disease?

• AIDS

• influenza

• elephantitus

• strep throat

A student sorted a list of diseases and conditions into two groups. The diseases and conditions in Group 1 are

• inherited conditions.

• infectious diseases

• caused by environmental conditions.

• not treatable with medications.