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

Health department officials are trying to identify the source of an outbreak of an intestinal virus. Which is the most likely source of the virus?

• polluted air
• lack of exercise
• contaminated water
• poor nutritional habits
  

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
  
• opossum – rabies
  
• mosquito – malaria
• flea – Lyme disease
  

Which environmental conditions contribute most to the spread of bacteria?

• cold temperatures and low humidity
  
• warm temperatures and low humidity
  
• cold temperatures and high humidity
  
• warm temperatures and high humidity
  

Which best explains why viruses are dangerous to humans?

• They are all airborne.
• They are easily spread.
• 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 disease can be transmitted by casual contact between two individuals?

• influenza
• malaria
• kidney disease
• Lyme disease

Which practice contributes to the antibiotic resistance of bacteria?

• failing to cover open cuts
• taking only part of a prescribed antibiotic
• completing an entire antibiotic prescription
• storing medicine and antibiotic products improperly
  

What is the main purpose of hand sanitizer?

• to promote viral contamination
• to reduce the number of virus strands
• to increase cell production on one’s hands
• to decrease the bacteria found on one’s hands
  

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.