Biology Quiz: Commensalism and Parasitism
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Questions and Answers

What is the role of a microbiologist in relation to antimicrobial treatment?

  • To advise on proper treatment guidelines
  • To prescribe antibiotics
  • To develop new antimicrobial regimens
  • To provide accurate diagnosis and rapid reporting (correct)
  • Where do some bacteria that make up our normal flora live?

  • On the surface of our eyes, skin, and in the ear (correct)
  • Only on the surface of our skin
  • In the urinary bladder
  • Only on the surface of our eyes
  • What is the term for the relationship where one organism benefits and the other is unaffected?

  • Mutualism
  • Commensalism (correct)
  • Symbiosis
  • Parasitism
  • What can occur when normal flora bacteria leave their habitat?

    <p>They can cause infections</p> Signup and view all the answers

    Why is it important to avoid overuse/misuse of antimicrobials?

    <p>To target only the pathogenic microorganisms</p> Signup and view all the answers

    What is the goal of antimicrobial treatment in relation to normal flora?

    <p>To target only the pathogenic microorganisms</p> Signup and view all the answers

    What is the estimated number of bacteria on the skin of a human adult?

    <p>10^12</p> Signup and view all the answers

    Which of the following is an example of mutualism in the human microbiome?

    <p>E. coli synthesizing vitamin K and some B vitamins</p> Signup and view all the answers

    What is the term for the microbes that are always present on or within the body?

    <p>Resident flora</p> Signup and view all the answers

    Which type of symbiotic relationship is characterized by one organism benefiting and the other being unaffected?

    <p>Commensalism</p> Signup and view all the answers

    What is the term for the relationship between the normal flora and the host?

    <p>Symbiosis</p> Signup and view all the answers

    Which of the following microorganisms is an example of a pathogenic microorganism that can cause infections when the normal flora is greatly reduced?

    <p>C. albicans</p> Signup and view all the answers

    What is the role of normal flora in preventing disease?

    <p>By producing substances that inhibit or kill nonindigenous species</p> Signup and view all the answers

    What is the definition of parasitism?

    <p>A relationship in which one organism lives at the expense of the other</p> Signup and view all the answers

    What can occur when normal flora changes its anatomic location?

    <p>The normal flora can cause disease</p> Signup and view all the answers

    What is the study of parasites that infect humans known as?

    <p>Medical parasitology</p> Signup and view all the answers

    What is an example of a protozoan parasite?

    <p>Plasmodium</p> Signup and view all the answers

    What is the term for a parasite that lives within another living organism?

    <p>Endoparasite</p> Signup and view all the answers

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