Microbiology: Spores Formation

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Questions and Answers

Which of the following statements about spores is NOT true?

  • it contains a complete copy of the chromosomes
  • they can allow bacteria to exist in suspended animation for centuries
  • it contains high concentrations of essential proteins and ribosomes (correct)
  • it contains a high concentration of calcium bound to dipicolinic acid

Which of the following is a true statement about spores?

  • They cannot protect DNA from intense heat and radiation
  • They contain high concentrations of essential proteins and ribosomes
  • They allow bacteria to reproduce rapidly
  • They contain a high concentration of calcium bound to dipicolinic acid (correct)

Which of the following genera of bacteria are known to form spores?

  • Staphylococcus and Streptococcus
  • Bacillus and Streptococcus
  • Bacillus and Clostridium (correct)
  • Clostridium and Staphylococcus

What function do spores serve for bacteria?

<p>Suspended animation (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic of spores?

<p>They help in immediate reproduction (C)</p> Signup and view all the answers

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Study Notes

Spore Characteristics

  • Spores can allow bacteria to exist in suspended animation for centuries
  • Spores contain a high concentration of calcium bound to dipicolinic acid
  • Spores protect the DNA from intense heat and radiation
  • Spores do not contain high concentrations of essential proteins and ribosomes
  • Spores do not contain a complete copy of the chromosomes

Spore-Forming Bacteria

  • Some Gram-positive (G+) bacteria, but not Gram-negative (G-) bacteria, form spores
  • Examples of spore-forming bacteria include Bacillus and Clostridium
  • Other Gram-positive bacteria, such as Staphylococcus and Streptococcus, do not form spores

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