Microbiology

Which best explains how a virus affects other organisms?

• Viruses increase the survival of other organisms.
• Viruses immediately destroy all cells they come in contact with.
• Viruses live and reproduce in between the cells of other organisms.
• Viruses invade the cells of other organisms, using them to reproduce.

Which is true about viruses?

• Each virus has its own seasonal activity.Viruses increase the survival of other organisms.
• Each virus is transmitted through the air.
• Each virus has its own shape and structure.
• Each virus is transmitted through poor sanitation

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 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 helps humans to resist an infectious disease?

• heredity
• immunity
• pathogens
• vectors

How does pasteurization make food safe to eat?

• It changes dangerous chemicals in the food into safer chemicals
• It encourages the growth of important gut-bacteria
• It heats the food enough to kill all bacteria
• It causes milk to sour and turn into butter

Which of the following pathogens causes cholera in humans?

• Fungi

• Bacteria

• Virus

• Protozoan

Which disease is preventable by properly maintaining water systems and can spread by AC units?

• Legionnaires

• Pneumonia

• Scarlet Fever

• Salmonella

Which disease causes paralysis and can lead to death. It is found in canned food.

• Botulism

• Salmonella

• Gangrene

• Black Plague