Microbiology

How do viruses cause disease?

• by secreting toxins
  
• by producing excess waste
  
• by damaging or killing cells
• by competing with healthy cells for nutrients

Which is the easiest way for a person to prevent microbial infections?

• Avoid contact with animals.
• Isolate themselves at home.
• Sterilize everything in the home.
• Wash hands frequently with hot water and soap.

Which characteristic makes bacteria suitable for scientific research of disease?

• They are multicellular.
• They reproduce rapidly.
• They keep virus populations under control.
• They grow in four stages allowing growth control.

Which best explains why antibiotics are ineffective in treating viral infections?

• Viruses destroy the antibiotic.
• Antibiotics only kill living cells.
• Antibiotics increase the rate of viral growth.
• Viruses escape antibiotics by hiding in cells.

Which best compares a virus to a bacterium?

• A virus is a large, living particle, and a bacterium is a large, living cell.
• A virus is a tiny, nonliving particle, and a bacterium is a large, living cell.

Which is the best method for preventing a parasitic disease?

• vaccination
• wearing a mask
• limiting physical contact with others
• avoiding contaminated food and water

Which is true regarding bacterial and viral infections?

• Bacterial infections are treated with antibiotics, while viral infections can be prevented through use of vaccines.
• Viral infections are treated with vaccines, while bacterial infections are prevented through use of antibiotics.
• Viral infections are treated with antibiotics, while bacterial infections are treated with vaccines.
• Both viral infections and bacterial infections are treated with vaccines.

Which leads to the conclusion that strep throat is a bacterial infection? 

• Strep throat is treated with vaccines.
• Strep throat is treated with antibiotics.
• A strep infection will go away without being treated.
• A person who has strep throat can never have it again.

Humans with HIV can transmit the HIV virus to other humans even though they do not show the symptoms of the disease. Which term best describes the unaffected individual?

• carrier
• contagion
• mutagen
• vector

Which helps humans to resist an infectious disease?

• heredity
• immunity
• pathogens
• vectors

Tags

NGSS.HS-LS4-2