Heating Element in Electric Heater Quiz

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Questions and Answers

What does the term 'microbiology' refer to?

  • The study of outer space and galaxies
  • The study of rocks and minerals
  • The study of plants and animals visible to the naked eye
  • The study of all living organisms that are too small to be visible with the naked eye (correct)

Who is credited with inventing the petri dish?

  • Robert Hooke
  • Louis Pasteur
  • Julius Richard Petri (correct)
  • Robert Koch

Which field of microbiology focuses on multicellular parasites?

  • Mycology
  • Bacteriology
  • Virology
  • Parasitology (correct)

In microbiology, what term is used to describe unicellular animal-like protists?

<p>Protozoa (B)</p> Signup and view all the answers

What is the primary purpose of agar in a petri dish?

<p>To cultivate bacteria (B)</p> Signup and view all the answers

'Virology' is the field of microbiology that focuses on which type of microorganism?

<p>Viruses (C)</p> Signup and view all the answers

What is the primary component of a steam autoclave?

<p>Erlenmeyer Flask (C)</p> Signup and view all the answers

Which laboratory tool is usually made of glass and has a conical body?

<p>Erlenmeyer Flask (A)</p> Signup and view all the answers

What is the purpose of laboratory tweezers and forceps in a lab environment?

<p>To grip and manipulate small or delicate objects (D)</p> Signup and view all the answers

Which tool is commonly used for mixing, heating, and cultivating microbes with liquid cultures?

<p>Erlenmeyer Flask (D)</p> Signup and view all the answers

What are Petri Dishes specifically designed for?

<p>Growth and testing of microbes (A)</p> Signup and view all the answers

In a laboratory setting, what are Test Tubes often used to collect?

<p>Biological samples like blood, saliva, and urine (C)</p> Signup and view all the answers

Why is it important to always ensure that the heating element in the autoclave is covered with water during use?

<p>To prevent the element from overheating and burning out (A)</p> Signup and view all the answers

What is the standard pressure used in autoclaves to achieve a chamber temperature of at least 250F?

<p>15 PSI (D)</p> Signup and view all the answers

What is the purpose of the biological indicator test for autoclaves?

<p>To validate the successful sterilization process (D)</p> Signup and view all the answers

What is the goal of sterilization in an autoclave?

<p>To heat up the material with steam, not water (A)</p> Signup and view all the answers

Which phase of sterilization in an autoclave involves reaching the desired temperature and pressure to kill microorganisms?

<p>Exposure or Sterilization Phase (B)</p> Signup and view all the answers

What is Geobacillus stearothermophilus used for in relation to autoclaves?

<p>To validate the success of an autoclave run in killing microorganisms (B)</p> Signup and view all the answers

What is the purpose of using flaming as a sterilization method?

<p>To expose items to a hot flame (D)</p> Signup and view all the answers

How do hot forced-air ovens differ from hot static-air ovens in sterilization?

<p>Hot forced-air ovens have more reliable sanitization (A)</p> Signup and view all the answers

What is the role of Ethylene Oxide in the sterilization process?

<p>Disrupt cell growth and division (D)</p> Signup and view all the answers

What is the main advantage of using hot forced-air ovens for sterilization?

<p>More reliable sanitization (C)</p> Signup and view all the answers

Why do thicker items enclosed in packaging require more time or higher temperature for sterilization?

<p>To ensure complete sterilization (B)</p> Signup and view all the answers

What is the primary function of incineration in the context of sterilization?

<p>Complete burning of items (C)</p> Signup and view all the answers

What is the purpose of alkylation within cells?

<p>Prevent normal cellular metabolism (D)</p> Signup and view all the answers

Which method is NOT used in sterilization procedures mentioned in the text?

<p>Filtration (B)</p> Signup and view all the answers

What is the main purpose of an incubator in laboratories?

<p>To provide proper conditions for growth and maintenance of microorganisms (A)</p> Signup and view all the answers

What does inoculation involve in laboratory practices?

<p>Introducing microorganisms into a culture medium (B)</p> Signup and view all the answers

What does aseptic technique aim to prevent?

<p>Contamination from pathogens (C)</p> Signup and view all the answers

Which of the following is NOT an application of incubators mentioned in the text?

<p>Radiation sterilization (C)</p> Signup and view all the answers

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