Microbiology Lab Techniques
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Questions and Answers

What is the primary function of flagella in bacterial cells?

  • Adherence and transfer of genetic material
  • Locomotion (correct)
  • Formation of bacterial spores
  • Protection from dehydration

    • What is the purpose of a bacterial capsule?

  • To facilitate locomotion
  • To adhere to other cells
  • To transfer genetic material
  • To protect from dehydration and evade the host's immune system (correct)

    • What is the most common method used for the removal of microorganisms?

  • Chemical agents
  • Autoclave
  • Application of heat (correct)
  • Desiccation

    • What is the term for the removal or destruction of all forms of life, including bacterial spores?

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

    What is the primary function of a hot plate in a laboratory setting?

    <p>To heat solutions and materials uniformly without the danger of an open flame</p> Signup and view all the answers

    What is the purpose of Bacillus stearothermophilus in autoclave quality control?

    <p>To ensure proper sterilization</p> Signup and view all the answers

    What is the primary purpose of the results from this test?

    <p>To determine which drugs are likely to be most effective in treating a person's infection</p> Signup and view all the answers

    What does a Susceptible result indicate about a bacterial strain?

    <p>It is inhibited by a concentration of the antibiotic associated with a high likelihood of therapeutic success</p> Signup and view all the answers

    What is the mechanism of action of penicillin?

    <p>It binds to the beta-lactam ring to inhibit DD-transpeptidase</p> Signup and view all the answers

    What is the consequence of a bacterial strain being resistant to an antibiotic?

    <p>The antibiotic will have no effect</p> Signup and view all the answers

    What is a common side effect of penicillin?

    <p>Stomach ache</p> Signup and view all the answers

    What is the outcome of penicillin's action on bacterial cell walls?

    <p>The cell walls are destroyed</p> Signup and view all the answers

    What is the term for strong chemicals used to disinfect inanimate objects?

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

    What is the process of reducing or inhibiting the growth of microorganisms on living tissue?

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

    What is the term for the presence of pathogens in the blood and tissues?

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

    What type of chemicals denature protein and inhibit enzymatic activity?

    <p>Heavy metals</p> Signup and view all the answers

    What is the collective term for physical and chemical killing of microorganisms?

    <p>Chemical sterilization</p> Signup and view all the answers

    What type of agent is used in facial washes and soaps to reduce surface tension?

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

    What is the causative agent of Pityriasis versicolor?

    <p>Malassezia furfur</p> Signup and view all the answers

    Which of the following diseases is caused by Candida albicans?

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

    What is the name of the disease caused by Histoplasma capsulatum?

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

    Which of the following is a subcutaneous fungal infection?

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

    What is the causative agent of Black piedra?

    <p>Piedraia hortae</p> Signup and view all the answers

    What is the name of the disease caused by Blastomyces dermatitidis?

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

    What is the mechanism of action of penicillin on bacteria?

    <p>Inhibiting cell wall synthesis</p> Signup and view all the answers

    What is the function of cerumen in the auditory canal?

    <p>To protect the auditory canals from infection</p> Signup and view all the answers

    What is the term for the body's ability to resist infection without prior exposure?

    <p>Innate immunity</p> Signup and view all the answers

    What is the role of basophils in the immune response?

    <p>To trigger allergic reactions</p> Signup and view all the answers

    What is the pH of the skin, which helps to defend against infection?

    <p>pH 5.6</p> Signup and view all the answers

    What is the term for diseases that occur when the body's immune system mistakenly attacks its own cells?

    <p>Autoimmune diseases</p> Signup and view all the answers

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