8.L.1.1 & 8.L.1.2 Assessment

Which best compares bacteria and viruses?

• Bacteria are smaller than viruses.
• Bacteria cause disease, but viruses do not.
• Bacteria are living organisms, but viruses are not.
• Bacteria have genetic material, but viruses do not.
  

Which pair correctly matches a vector and the infectious disease it carries?

• human – influenza

• mosquito - malaria

Which best explains why viruses are dangerous to humans?

• They are all airborne.

• They are easily spread and cannot be treated once you have them.

• They are better suited to live in cold environments.

• They cannot be treated for several months after infection.

Which best explains how a nonliving virus is able to reproduce?

• A virus becomes living when in contact with a host organism.
• A virus infects a host organism by injecting its DNA into the cells of the host organism.
• A virus infects a host organism by pulling the DNA from the cells of the host organism into itself. 
•  A virus becomes living when a sufficient number of viruses invade a host organism and cause an infection.

Which is an example of a disease caused by a virus?

• influenza

• malaria

• kidney disease

• Lyme disease

How does the structure of a virus compare to that of a bacterium?

• They are both multicellular and living.
• They are both single-celled and nonliving.
• The virus is nonliving so it has no cells, whereas the bacterium is single-celled.
• The bacterium is nonliving, so it has no cells, whereas the virus is single-celled.
  

Which is the best way to prevent the spread of pathogens?

• Wear gloves while outside.

• Educate the public about disease transmission.

• Wash hands frequently

• Stay at home during flu season whenever possible.

Which is most often used to destroy bacteria?

• fungus
• vitamin
• vaccine
• antibiotic

Why do some antibiotics become ineffective over time?

• because they only kill certain viruses
• because they mutate before being used
• because they are overused for treatments
• because they only work for a few hours a day
  

How are viruses different from most other microbes?

• They are nonliving.
  
• They can cause disease.
• They contain genetic material.
  
• They are only seen with a microscope.