Microbiology Chapter 4 Prokaryotes

20 Questions | Total Attempts: 2296

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Prokaryote Quizzes & Trivia

Quiz on prokaryotes.


Questions and Answers
  • 1. 
    Which of the following is the smallest virus?
    • A. 

      Influenza virus

    • B. 

      AIDS virus

    • C. 

      Measles virus

    • D. 

      Poliovirus

    • E. 

      West Nile virus

  • 2. 
    What mircoscope will help to see the stucture of viruses?
    • A. 

      Confocal

    • B. 

      Scanning

    • C. 

      Transmission

    • D. 

      A and B

    • E. 

      B and C

  • 3. 
    • A. 

      A cell wall is usually present and is cemically complex

    • B. 

      The flagella is complex and consist of mutiple microtubules

    • C. 

      Cell division occurs by binary fission

    • D. 

      Ribosomes are the smaller size 70S

    • E. 

      No meiosis, only transfer of DNA fragments

  • 4. 
    What is not true about eukaryotes?
    • A. 

      Mitosis

    • B. 

      Cell wall, if present, is chemically simple

    • C. 

      Larger size 80S ribosome located in organelles

    • D. 

      Glycocalyx present in some cells that lack a cell wall

    • E. 

      Tyically 10 to 100 nanometers in diameter

  • 5. 
    What is not a function of a bacterial cell wall?
    • A. 

      Attachment sites for bacteriophages

    • B. 

      Maintain cell shape

    • C. 

      Platform for surface appendages

    • D. 

      Counter acting the effects of osmotic pressure

    • E. 

      Locomotion for most of the cell

  • 6. 
    Uncapsulated bacteria are the most dangerous.
    • A. 

      True

    • B. 

      False

  • 7. 
    What is not true about gram positive cell wall?
    • A. 

      Consists of many polymer layers of peptidoglycan connected by amino acid bridges

    • B. 

      Comprised of a low percentage of peptidoglycans

    • C. 

      Has an alternating sequence of N-aceylglucosamine and N-acetyl-muraminic acid

    • D. 

      Peptidoglycan layers are connected to the other by a brigde made of amino acids and amino acid derivates

    • E. 

      Lipoteichoic acid and teichoic acid are found

  • 8. 
    What separates the outer plasma membrane from the peptidoglycan layer in gram negative cell walls?
    • A. 

      Lipid A

    • B. 

      Lipopolysaccharide layer (LPS layer)

    • C. 

      Fimbriae

    • D. 

      Periplasmic space

    • E. 

      Dipicolinate acid

  • 9. 
    What is located adjacent to the exterior peptidoglycan layer in gram negative cell walls?
    • A. 

      Lipid A

    • B. 

      Lipopolysaccharide layer (LPS layer)

    • C. 

      Fimbriae

    • D. 

      Periplasmic space

    • E. 

      Dipicolinate acid

  • 10. 
    The lipid portion of the LPS layer contains a toxic substance called what?
    • A. 

      Lipid A

    • B. 

      Lipoposaccharide layer (LPS layer)

    • C. 

      Small acid-soluble spore proteins (SASPS)

    • D. 

      Periplasmic space

    • E. 

      Strong spore coat

  • 11. 
    What is false about gram positive bacteria?
    • A. 

      Its flagellar structure has two rings in the basal body

    • B. 

      Has high susceptibility to penicillin and sulfanamide

    • C. 

      Has low susceptibility to streptomycin, chloramphenicol and tetracycline

    • D. 

      Lipid and lipoprotein content is low

    • E. 

      Resistant to onionic detergents, sodium ozide and drying

  • 12. 
    What is not true about gram negative bacteria?
    • A. 

      High susceptibility to penicilin and streptomycin

    • B. 

      Peptidoglycan layer is thin

    • C. 

      Low resistance to sodium ozide and drying

    • D. 

      Low susceptibility to onionic detergents

    • E. 

      Low inhibition by basic dyes

  • 13. 
    What chemical produced by endospores is thought to lend to their high resistance?
    • A. 

      Mot-A

    • B. 

      Small acid-soluble spore proteins (SASPS)

    • C. 

      Dipicolinic acid (DPA)

    • D. 

      Fimbriae

    • E. 

      Protein switch

  • 14. 
    What protects the DNA of the spore cell from UV radiation, dessication and dry heat?
    • A. 

      Mot-B

    • B. 

      Small acid-soluble proteins (SASPS)

    • C. 

      Dipicolinic acid (DPA)

    • D. 

      Fimbriae

    • E. 

      Protein switch

  • 15. 
    What is the conversion back to a vegetative cell?
    • A. 

      Transformation

    • B. 

      Polymorphism

    • C. 

      Pleomorphism

    • D. 

      Staining

    • E. 

      Germination

  • 16. 
    What contributes to an endospores' resistance and is composed of highly crosslinked Keratin?
    • A. 

      Lipid A

    • B. 

      Fimbriae

    • C. 

      Periplasmic space

    • D. 

      Strong spore coat

    • E. 

      Protein switch

  • 17. 
    Which of the following is an example central endospore?
    • A. 

      Bacillus megaturium

    • B. 

      Spirillum minor

    • C. 

      Salmonella

    • D. 

      Spirillum volutans

    • E. 

      Vibrio cholera

  • 18. 
    Which of the following is a lophotrichous?
    • A. 

      Spirillum minor

    • B. 

      Spirillum volutans

    • C. 

      Salmonella

    • D. 

      Clostrium tetani

    • E. 

      Vibrio cholera

  • 19. 
    What are short attachment pili called?
    • A. 

      F

    • B. 

      Sex pili

    • C. 

      Fimbriae

    • D. 

      Flagella

    • E. 

      Vegetative cells

  • 20. 
    What is the appearance of two or more distinctly different forms in the life cycle of some organisms?
    • A. 

      Transformation

    • B. 

      Polymorphism

    • C. 

      Pleomorphism

    • D. 

      Staining

    • E. 

      Germination