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  • Question
  • Mycoplasmas are different from the other prokaryotes by


  • Options
  • A. presence of chitin in cell walls
  • B. presence of murrain in cell walls
  • C. presence of proteins in cell walls
  • D. absence of cell wall itself

  • Correct Answer
  • absence of cell wall itself 


  • Micro Organisms problems


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    • 1. Evolutionary relationships between groups of organisms are determined using which of the following type of information?

    • Options
    • A. Comparisons of nucleotide sequences
    • B. Comparisons of biochemical pathways
    • C. Comparisons of structural features
    • D. All of the above
    • Discuss
    • 2. The first organism in most natural food chains is

    • Options
    • A. a herbivore
    • B. a decomposer
    • C. photosynthetic
    • D. carnivorous
    • Discuss
    • 3. Which one is not studied in microbiology?

    • Options
    • A. Bacteria
    • B. Animal behaviour
    • C. Fungi
    • D. Algae
    • Discuss
    • 4. The endosymbiosis hypothesis provides an explanation for how

    • Options
    • A. eukaryotes developed from prokayotes
    • B. prokaryotes developed from eukaryotes
    • C. algae developed from protozoa
    • D. protozoa developed from algae
    • Discuss
    • 5. All of the following individuals contributed to cell theory except

    • Options
    • A. Robert Hooke
    • B. Matthias Schleiden
    • C. Theodor Schwann
    • D. Rudolf Virchow
    • Discuss
    • 6. Who discovered the bacteria that cause cholera?

    • Options
    • A. Pierre Berthelot
    • B. Robert Koch
    • C. Louis Pasteur
    • D. Rudolf Virchow
    • Discuss
    • 7. Genetic and biochemical similarities between contemporary cyanobacteria and eukaryotic chloroplasts are accepted to mean that

    • Options
    • A. eukaryotes evolved from bacteria
    • B. eukaryotes evolved from archaea
    • C. oxygenic photosynthesis first evolved in eukaryotes
    • D. cyanobacteria arose from chloroplasts which escaped from plant cells
    • Discuss
    • 8. The idea of selective toxicity was first proposed by

    • Options
    • A. Antony van Leeuwenhoek
    • B. Paul Ehrlich
    • C. Louis Pasteur
    • D. Alexander Fleming
    • Discuss
    • 9. One of the reasons for the evolutionary success of the kingdom Monera is that its members are nutritionally diverse. Which of the following(s) is/are the way(s) of obtaining energy?

    • Options
    • A. Photoautotrophy
    • B. Photoheterotrophy
    • C. Chemoheterotrophy
    • D. All of the above
    • Discuss
    • 10. The phospholipids present in cytoplasm membrane of eubacteria is mainly

    • Options
    • A. phosphoglycerides
    • B. polyisoprenoid
    • C. phospholipoprotein
    • D. none of these
    • Discuss


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