The Fascinating World of Bacteria and Archaea

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Questions and Answers

What is the name of the process that bacteria use to divide?

  • Mitosis
  • Budding
  • Binary fission (correct)
  • Meiosis

How can bacteria be classified?

  • By habitat only
  • By staining techniques only
  • By cell shape, staining techniques, and base sequences (correct)
  • By base sequences only

What is the name of the region where bacterial DNA is located?

  • Nucleolus
  • Nucleoplasm
  • Nucleus
  • Nucleoid (correct)

What is the main difference between asexual and sexual reproduction in bacteria?

<p>Asexual reproduction does not involve genetic recombination (A)</p> Signup and view all the answers

What is the role of bacteria in nitrogen fixation?

<p>They convert atmospheric nitrogen into a usable form for plants (C)</p> Signup and view all the answers

What is the main difference between bacteria and archaea?

<p>Archaea are more ancient life forms (B)</p> Signup and view all the answers

How are bacteria used in the biotechnology industry?

<p>To mass-produce medicines (C)</p> Signup and view all the answers

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Study Notes

  • Bacteria have two types of reproduction: asexual and sexual
  • Bacterial DNA is located in the nucleoid region and has a single circular chromosome
  • Bacteria use binary fission to divide
  • Bacteria have a high metabolic diversity and can live in a variety of habitats
  • Bacteria can be classified by cell shape, staining techniques, and base sequences
  • Bacteria can cause illnesses but can also be helpful, such as in making yogurt and producing antibiotics
  • Bacteria play a crucial role in decomposition and nitrogen fixation
  • Companies use bacteria in the biotechnology industry to mass-produce medicines
  • Archaea are ancient life forms that can live in harsh environments
  • Bacteria are almost as old as the planet itself, dating back more than 3½ billion years

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