Cell Structure, Virus Classification, and Bacteriology History Quiz
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Questions and Answers

Which of the following is a characteristic of the complex viral structure?

  • Helical shape
  • Icosahedral shape (correct)
  • Uniform shape
  • Simplistic design
  • Which Baltimore classification group includes viruses with double-stranded DNA?

  • Group II
  • Group I (correct)
  • Group IV
  • Group III
  • Who is credited as the 'father of the microscope'?

  • Robert Hooke
  • Aristotle
  • Hans and Zacharias Janssen
  • Antony Van Leeuwenhoek (correct)
  • What key development in microscopy did Robert Hooke contribute to?

    <p>Improved upon the microscope and made detailed observations (B)</p> Signup and view all the answers

    Which scientist promoted the idea of sterile surgery and the use of carbolic acid to reduce post-operative infections?

    <p>Joseph Lister (D)</p> Signup and view all the answers

    Which scientist constructed the first electron microscope?

    <p>Ernst Ruska (D)</p> Signup and view all the answers

    Which of the following is NOT a component of the bacterial identification process mentioned in the text?

    <p>Vitamin B and amino acids (C)</p> Signup and view all the answers

    Which Lancefield group of streptococci is associated with strains pathogenic for humans?

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

    What is the primary purpose of using Lancefield grouping in the serological classification of streptococci?

    <p>To determine the sources of the streptococcal strains (C)</p> Signup and view all the answers

    Which of the following is true about the 16S rRNA gene used in genotypic identification of bacteria?

    <p>It is the most informative region of the bacterial genome (A)</p> Signup and view all the answers

    What is the primary purpose of using electron microscopy in the bacterial identification process described in the text?

    <p>To observe the morphology of the bacterial colonies on agar (D)</p> Signup and view all the answers

    Which Lancefield group of streptococci is associated with strains from mastitis in cows, normal milk, human throat, and human vagina?

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

    What was Ferdinand Julius Cohn's primary contribution to microbiology?

    <p>Classifying algae and plants based on their distinguishing features from green plants (A)</p> Signup and view all the answers

    Which of the following is NOT one of Koch's postulates?

    <p>The organism must be able to survive and replicate outside the host organism (B)</p> Signup and view all the answers

    What was the significance of Koch's postulates in the field of microbiology?

    <p>It established a framework for identifying the causative agents of diseases (A)</p> Signup and view all the answers

    Which of the following diseases did Robert Koch NOT isolate the causative agent for?

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

    What was Louis Pasteur's major contribution to the field of microbiology?

    <p>Developing the germ theory of disease (B)</p> Signup and view all the answers

    What was the significance of Pasteur's pasteurization process?

    <p>It killed germs and prevented the spread of disease (A)</p> Signup and view all the answers

    Which of the following is NOT a characteristic used for phenotypic classification of bacteria?

    <p>Antibiotic resistance profile (D)</p> Signup and view all the answers

    What is the primary reason for the difference in Gram staining between Gram-positive and Gram-negative bacteria?

    <p>The actual reason remains unclear as stated in the text (A)</p> Signup and view all the answers

    Which of the following is a Gram-positive coccus?

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

    What is the primary function of the cell wall in prokaryotes?

    <p>To help determine the shape of the bacteria and maintain its structural integrity (A)</p> Signup and view all the answers

    Which of the following organisms have a cell wall structure different from the two major groups of bacteria (Gram-positive and Gram-negative)?

    <p>Acid-fast bacilli (D)</p> Signup and view all the answers

    Which of the following statements is correct?

    <p>All prokaryotes have a cell wall (B)</p> Signup and view all the answers

    What is the correct nomenclature for Escherichia coli?

    <p>Domain: Eubacteria, Phylum: Proteobacteria, Class: Gamma Proteobacteria, Order: Enterobacteriales, Family: Enterobacteriac eae, Genus: Escherichia (D)</p> Signup and view all the answers

    Which domain does Staphylococcus aureus belong to?

    <p>Domain: Bacteria (A)</p> Signup and view all the answers

    What should the nomenclature of Staphylococcus aureus be according to the rules provided?

    <p>Genus: Staphylococcus Species:Aureus (C)</p> Signup and view all the answers

    In the nomenclature rules provided, what should informal or trivial names begin with?

    <p>Informal names begin with a lower case letter (A)</p> Signup and view all the answers

    What is the correct order of taxonomic classification for Escherichia coli?

    <p>Order - Enterobacteriac eae, Family - Enterobacteriales, Genus - Escherichia (C)</p> Signup and view all the answers

    Which phylum does Staphylococcus aureus belong to?

    <p>Phylum: Firmicutes (A)</p> Signup and view all the answers

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