Microbiology Exam 1

49 Questions | Total Attempts: 49

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Microbiology Quizzes & Trivia

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Questions and Answers
  • 1. 
    Which organism is prokaryotic and may be found in our body?
    • A. 

      Bacteria

    • B. 

      Fungi

    • C. 

      Virus

    • D. 

      Archaea

  • 2. 
    All viruses contain ____________ and ________________.
    • A. 

      Nucleic acid, a capsid

    • B. 

      A capsid, a nucleus

    • C. 

      Nucleic acid, a nucleus

    • D. 

      A cell membrane, a nucleus

  • 3. 
    Different species living together; often used for mutually beneficial interactions between different species is called SYMBIOSIS.
    • A. 

      True

    • B. 

      False

  • 4. 
    Relationship between two organisms where one organism benefits without affecting the other.
    • A. 

      Mutualism

    • B. 

      Commensalism

    • C. 

      Parasitism

  • 5. 
    A symbiotic association where both partners will gain.
    • A. 

      Mutualism

    • B. 

      Commensalism

    • C. 

      Parasitism

  • 6. 
    Non-mutual relationship between organisms of different species where one organism benefits at the expense of the other
    • A. 

      Mutualism

    • B. 

      Commensalism

    • C. 

      Parasitism

  • 7. 
    A defining feature of a eukaryotic cell is the presence of
    • A. 

      A nucleus

    • B. 

      A cell wall

    • C. 

      Cytoplasm

    • D. 

      Gram-positive cell membrane

  • 8. 
    The single-celled fungi are yeast and the filamentous fungi are molds
    • A. 

      True

    • B. 

      False

  • 9. 
    Which microbes are not cellular organisms?
    • A. 

      Viruses

    • B. 

      Bacteria

    • C. 

      Fungi

    • D. 

      Archaea

  • 10. 
    Which structures allow bacteria to adhere to each other and surfaces more easily?
    • A. 

      Cell membrane and cell wall

    • B. 

      Porins and Lipopolysaccharides

    • C. 

      Capsules and Fimbriae

    • D. 

      Cilia and Flagella

    • E. 

      Capsules and Flagella

  • 11. 
    Granules usually store _________ for bacteria.
    • A. 

      Waste

    • B. 

      Gases

    • C. 

      Reserve nutrients

    • D. 

      Simple sugars, like glucose

  • 12. 
    Which structure of the bacterial flagella generates the whipping action and movement of the flagella?
    • A. 

      Flagellin protein

    • B. 

      Ring structures within the cell wall and cell membrane

    • C. 

      The motor proteins that are found next to the flagellin proteins in the main structure of the flagella

    • D. 

      The motor proteins inside and next to the cell membrane

    • E. 

      The molecules sent out by an attractant

  • 13. 
    Which type of bacteria has a thick peptidoglycan cell wall?
    • A. 

      Gram-negative bacteria

    • B. 

      Gram-positive bacteria

    • C. 

      Archaeon

    • D. 

      Plant cell

  • 14. 
    Where is the DNA located in bacteria?
    • A. 

      In a membrane enclosed nucleus

    • B. 

      In ribosomes

    • C. 

      In the mitochondria

    • D. 

      In a region called the nucleoid

  • 15. 
    A hydrophilic molecule would be able to pass through which structure?
    • A. 

      Phospholipid bilayer

    • B. 

      Outer membrane

    • C. 

      Layers of peptidoglycan

    • D. 

      Phytane lipids

  • 16. 
    Which cell wall contains the lipid A?
    • A. 

      Gram-positive cell wall

    • B. 

      Archaeon cell wall

    • C. 

      Yeast cell wall

    • D. 

      Gram-negative cell wall

  • 17. 
    The three main shapes of Eubacteria are
    • A. 

      Helical/square/diamond

    • B. 

      Diamond/rod/oval

    • C. 

      Square/diamond/oval

    • D. 

      Helical/rod/oval

    • E. 

      Icosahedral/octagon/hexagon

  • 18. 
    A main component of the cell wall for a gram-negative bacteria is the
    • A. 

      Cell membrane

    • B. 

      Outer membrane

    • C. 

      Nuclear membrane

    • D. 

      Capsule

    • E. 

      Flagella

  • 19. 
    When do bacteria produce spores?
    • A. 

      When water is sparse.

    • B. 

      When nutrients are plentiful.

    • C. 

      When temperatures are moderate.

    • D. 

      When harsh chemicals are absent.

  • 20. 
    Why can spores cause problems?
    • A. 

      Because they do not grow and divide

    • B. 

      Because they withstand conditions often used to get rid of bacteria.

    • C. 

      Because they do not carry out metabolism

    • D. 

      Because they germinate when conditions are harsh

    • E. 

      Because they have an outer surface that causes allergic reactions.

  • 21. 
    Which describes chemotaxis?
    • A. 

      A thin structure that connects two bacterium together

    • B. 

      Bacteria moving randomly

    • C. 

      Bacteria moving toward an attractant

    • D. 

      The rotating action of the flagellum of a bacteria

  • 22. 
    What does the teichoic acid make the surface of the gram-positive cell wall?
    • A. 

      Positively charged

    • B. 

      Negatively charged

    • C. 

      Neutral

    • D. 

      Hydrophobic

  • 23. 
    Which statement is false about ribosomes?
    • A. 

      Both eukaryotic and prokaryotic ribosomes make proteins.

    • B. 

      Both eukaryotic and prokaryotic ribosomes are made up of proteins and rRNA

    • C. 

      Both eukaryotic and prokaryotic ribosomes consists of two subunits

    • D. 

      Both eukaryotic and prokaryotic ribosomes are the same size

    • E. 

      Both eukaryotic and prokaryotic ribosomes function when the two subunits come together.

  • 24. 
    Which name indicates that bacteria are organized into a cluster?
    • A. 

      Single

    • B. 

      Diplo

    • C. 

      Staphylo

    • D. 

      Strepto

    • E. 

      Tetrad

  • 25. 
    Which organism has a different type of lipids in the cell membrane than all other organisms?
    • A. 

      Bacteria

    • B. 

      Plants

    • C. 

      Animals

    • D. 

      Archaea