Microorganisms: Bacteria Overview
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Questions and Answers

What is the domain to which bacteria belong?

  • Eukarya
  • Archaea
  • Bacteria (correct)
  • Monera

Which domain contains extremophiles that live in extreme environments?

  • Bacteria
  • Monera
  • Eukarya
  • Archaea (correct)

What characteristic defines bacteria as prokaryotes?

  • Ability to survive in extreme temperatures
  • Presence of true nuclei in cells
  • Microscopic size
  • Lack of a nuclear envelope (correct)

What is the size range of the smallest unicellular eukaryotes?

<p>10 to 100 microns (A)</p> Signup and view all the answers

What does it mean for bacteria to be unicellular?

<p>Composed of a single cell (B)</p> Signup and view all the answers

Which type of bacteria does not react to the Gram stain due to their thin peptidoglycan layer and outer lipid layer?

<p>Gram-negative bacteria (D)</p> Signup and view all the answers

Which bacterial shape is referred to as cocci?

<p>Sphere-shaped (C)</p> Signup and view all the answers

What is the process through which bacteria reproduce?

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

Which bacteria can enter a cryptobiotic, or dormant, stage until environmental conditions are favorable for their growth?

<p>Endospore-forming bacteria (B)</p> Signup and view all the answers

Which bacterial species is responsible for the sexually transmitted infection known as syphilis?

<p>Treponema pallidum (D)</p> Signup and view all the answers

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