Food Storage: Relative Humidity and Gas Concentration
30 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What role does the bacterial capsule play?

  • Prevents the bacterium from drying out
  • Serves as a virulence factor
  • Mediates adherence of cells to surfaces
  • All of the above (correct)
  • What is the function of flagella in bacteria?

  • Help in biofilm formation
  • Contain genetic information
  • Protect against antimicrobial agents
  • Serve as propellers for movement (correct)
  • Which structure contains the bacterium's genetic information?

  • Flagella
  • Cell wall
  • Chromosome (correct)
  • Cytoplasm
  • Which component forms the outer layer of the bacterial cell envelope?

    <p>Cell wall</p> Signup and view all the answers

    What is the main function of the cytoplasm in bacteria?

    <p>Metabolism and replication</p> Signup and view all the answers

    Which structural component is crucial for genetic fingerprinting in bacteria?

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

    What is the primary focus of food microbiology?

    <p>Understanding microorganisms in raw and processed food</p> Signup and view all the answers

    Which microorganism is the most abundant in nature according to the text?

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

    Why are pathogens in food products a major concern?

    <p>They result in public health issues and illnesses</p> Signup and view all the answers

    How do bacterial cells reproduce under favorable conditions?

    <p>By dividing at a constant rate</p> Signup and view all the answers

    What defines food microbiology as a science?

    <p>Examination of bacteria and viruses in food</p> Signup and view all the answers

    What is the primary atmospheric gas used to control microorganisms in foods?

    <p>Carbon dioxide (CO2)</p> Signup and view all the answers

    What is the generation time of bacterial cells mentioned in the text?

    <p>$30$ minutes</p> Signup and view all the answers

    What are some substances produced by foodborne organisms that can inhibit or kill other microorganisms?

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

    What is the phenomenon called when one microorganism inhibits or destroys another nonspecifically in the same environment?

    <p>General microbial interference</p> Signup and view all the answers

    What role does relative humidity play in food storage environments?

    <p>It influences water activity (aw) within foods</p> Signup and view all the answers

    In modified-atmosphere packaging of foods, what gas can be used effectively due to its ability to control microorganisms?

    <p>Carbon dioxide (CO2)</p> Signup and view all the answers

    From a regulatory perspective, what is identified as the main source of food contamination in meat and poultry?

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

    Which of the following is a source of bacterial contamination for food handlers?

    <p>Hands and outer garments</p> Signup and view all the answers

    Which bacterial genus mentioned in the text can survive in the environment?

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

    What is a common location where bacteria may contaminate food utensils during slaughter and processing operations?

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

    What contributes significantly to the contamination of vegetables and fruits?

    <p>Soil and water organisms</p> Signup and view all the answers

    Which factor plays a major role in the transfer of pathogenic agents between countries according to the text?

    <p>Globalization of food supply</p> Signup and view all the answers

    Which of the following is NOT mentioned as a possible source of bacterial contamination in food products?

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

    What poses a risk of introducing pathogens to a country, as mentioned in the text?

    <p>International travel</p> Signup and view all the answers

    What is a known source of Listeria monocytogenes to dairy and meat animals according to the text?

    <p>Animal feeds</p> Signup and view all the answers

    Which of the following organisms is NOT listed as a notable pathogen found in the intestinal biota according to the text?

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

    What is identified as a primary source for E.coli, Salmonella, and Listeria in the text?

    <p>Animal hides</p> Signup and view all the answers

    Which of the following is NOT mentioned as an example of bacteria found in soil and water that may contaminate food?

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

    Where are salmonellae carried to poultry and other farm animals from?

    <p>Animal feeds</p> Signup and view all the answers

    More Like This

    Food Storage Best Practices Quiz
    8 questions
    Food Storage and Preservation Quiz
    5 questions
    Food Storage Quiz
    10 questions

    Food Storage Quiz

    CuteChrysoberyl avatar
    CuteChrysoberyl
    Use Quizgecko on...
    Browser
    Browser