Which of the following requires a host cell?

• algae
• protozoans
• bacteria
• virus

The purpose of a vaccine is...

• destroy virus
• stimulate an immune response
• prevent inflammation
• cure a disease

What is a difference between a virus and bacteria?

• virus is larger
• virus is wider
• virus can't reproduce n its own
• virus does not contain genetic material

Antibiotics are helpful in treating an infection when the number of bacteria becomes too large for the body's immune system to fight on its own. What process enables the bacteria to multiply inside the body?

• binary fission
• fertilization 
• meiosis
• nitrogen fixation

How are parasites and viruses similar?

• both are contagious diseases
• both infect host organisms
• Both reproduce host cells
• both breakdown using oxygen

Which infection of the human body can be likely treated with antibiotics?

• viral infection
• protist infection
• fungal infection 
• bacteria infection

Which best compares an epidemic and a pandemic?

• an epidemic is caused by bacteria, while a pandemic is caused by viruses
• a pandemic is spread by humans, while an epidemic is spread by insects
• a pandemic is in a small region and an epidemic is in a larger region
• a pandemic is in a larger population than an epidemic

Scientists are trying to prevent an epidemic of a highly contagious disease. What information should the scientists study first?

• how the disease reproduces
• the treatment of the disease
• the symptoms of the disease
• how the disease is transmitted

Which of the following has had the greatest impact on preventing epidemics in the 21st century?

• immunizations 
• new medicines
• good hygiene

In the midwestern US, the flu was greater than expected. Which best describes the outbreak?

• pandemic
• epidemic