Gram-Positive Cocci Quiz

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Questions and Answers

Which phyla do the genera Staphylococcus and Micrococcus belong to?

  • Firmicutes and Bacteroidetes
  • Proteobacteria and Firmicutes
  • Firmicutes and Actinobacteria (correct)
  • Actinobacteria and Proteobacteria

How many recognized species, including subspecies, are there in the genus Staphylococcus?

  • 60
  • 40
  • 25
  • 49 (correct)

Which families have the Staphylococcus spp. been combined with into the order Bacillales?

  • Bacillaceae, Planococcaceae, and Listeriaceae (correct)
  • Planococcaceae, Listeriaceae, and Dermacoccaceae
  • Micrococcaceae, Listeriaceae, and Dermacoccaceae
  • Enterobacteriaceae, Bacillaceae, and Planococcaceae

Which genera have some of the Micrococcus species been reclassified into?

<p>Kocuria, Nesterenkonia, Kytococcus, and Dermacoccus (A)</p> Signup and view all the answers

Which family does the organism Alloiococcus otitidis belong to based on its biochemical reactions?

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

What is the average size of bacteria measured in μm?

<p>0.4-2 μm (C)</p> Signup and view all the answers

Which genus is known as the smallest living organism?

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

Which type of organisms release exotoxins except for Listeria?

<p>Major gram positive organisms (C)</p> Signup and view all the answers

Which type of toxins are usually produced by gram negative organisms?

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

Which type of toxin has a stability to heating described as stable?

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

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