IInfectious Diseases Concepts

Which statement about microbes is accurate?

• All microbes cause illness.

• Most microbes are beneficial and help the body function.

• Microbes only exist in environments outside the human body.

• Microbes are primarily responsible for all human diseases.

How many bacterial cells are estimated to be in the human body compared to human cells?

• About the same number.

• Half as many.

• At least ten times more.

• Significantly fewer.

What is a key characteristic of viruses?

• They are single-celled organisms that can replicate independently.

• They require another cell for their growth and replication.

• They are much larger than bacteria.

• They can only survive in extreme environments.

How do bacteria differ from viruses in terms of replication?

• Bacteria are smaller and require a host cell for replication.

• Bacteria are single-celled organisms that can live and replicate in the environment.

• Bacteria are complex cellular life forms with internal structures.

• Bacteria are only found in water and dirt.

What is true about the presence of microbes on Earth?

• They are only found in specific, limited environments.

• They are the most abundant life form and occupy every conceivable ecological niche.

• They have only existed for a few thousand years.

• They are primarily found in sterile, man-made environments.

What proportion of global deaths annually are attributed to a handful of deadly infectious diseases like HIV/AIDS, tuberculosis, and malaria?

• Less than 1%.

• About 1/10.

• About 1/5.

• More than half.

How does the influenza virus primarily spread from an infected person to someone else?

• Through direct contact with contaminated food.

• Via insect vectors like mosquitoes.

• Through droplets from a sneeze or cough.

• By touching contaminated surfaces only.

Which of the following is a recommended practice to combat antibiotic resistance?

• Save leftover antibiotics for future illnesses.

• Take antibiotics for viral infections like the common cold.

• Complete the full course of antibiotics if prescribed.

• Stop taking antibiotics as soon as symptoms improve.