Questions: Select all that apply Identify five characteristics of Listerio monocytogenes. Spore-forming Resistant to pH extremes Intracellular parasite Flagellated Spirochete Resistant to cold Obligate anaerobe Resistant to heat

Select all that apply Identify five characteristics of Listerio monocytogenes. Spore-forming Resistant to pH extremes Intracellular parasite Flagellated Spirochete Resistant to cold Obligate anaerobe Resistant to heat
Transcript text: Select all that apply Identify five characteristics of Listerio monocytogenes. Spore-forming Resistant to pH extremes Intracellular parasite Flagellated Spirochete Resistant to cold Obligate anaerobe Resistant to heat
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Solution

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The task is to identify five characteristics of Listeria monocytogenes from the given list. Here are the characteristics and their explanations:

  1. Resistant to pH extremes: Listeria monocytogenes can survive in a wide range of pH levels, which allows it to persist in various environments, including acidic foods.

  2. Intracellular parasite: Listeria monocytogenes is known to invade and live within host cells, particularly macrophages, which helps it evade the host's immune system.

  3. Flagellated: Listeria monocytogenes is motile due to the presence of flagella, especially at lower temperatures (below 30°C).

  4. Resistant to cold: Listeria monocytogenes can grow at refrigeration temperatures, which is why it is a concern in refrigerated foods.

  5. Resistant to heat: Listeria monocytogenes is relatively resistant to heat compared to other non-spore-forming bacteria, but it is not as resistant as spore-forming bacteria.

Summary:

The five characteristics of Listeria monocytogenes are:

  • Resistant to pH extremes
  • Intracellular parasite
  • Flagellated
  • Resistant to cold
  • Resistant to heat
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