Summary Brock Biology of Microorganisms Global edition Book cover image

Summary Brock Biology of Microorganisms Global edition

ISBN-10 1292018313 ISBN-13 9781292018317
211 Flashcards & Notes
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A snapshot of the summary - Brock Biology of Microorganisms Global edition ISBN: 9781292018317

  • 1 Introduction and Major Themes of Microbiology

  • What are Koch's four postulates (with limitations)?
    - Suspected pathogen must be present in diseased animal and not in healthy. (several human diseases do not cause disease in other animals)
    - suspected pathogen must be grown in a pure culture. (some bacteria do not grow in a pure culture on a plate) (virusses can not grow on plates)
    - cells from suspected pathogens cause disease in healthy animals.
    - suspected pathogens must be reisolated and shown to be the same as the original pathogen.
  • Wat voor toxine is het cholera toxine? 
    A) Endotoxine en AB-toxine 
    B) Enterotoxine en AB-toxine
    C) Endotoxine en cytotoxine 
    D) Enterotoxine en cytotoxine  
    B) Enterotoxine en AB-toxine
  • 2 Microbial cell structure and functiom

  • What is the function of a peptidoglycan?
    its a polymer that gives strength to the cell walls. It consists of a glycan and a peptide part.
  • What is different about archaeal cell walls?
    Pseudomurein instead of peptidoglycan. No outer membrane. S-layer
  • 3 types of cell locomotion?
    - flagellum
    - gliding motility (glide protein)
    - taxis (in response to chem/physical gradient)
  • What are the differences between fimbriae and pili?
    Pili are longer than fimbriae. Pili dont only assist in the attachment of organisms to the surface of a cell but also conjugation (NA transfer).
  • What are 3 characteristics of endospores? And the 3 stages.
    - resistent to heat, harsh chemicals and radiation
    - ideal for dispersal via wind/water etc.
    - present in some gram-positive bacteria.

    - terminal, subterminal and central
  • How is the speed and motion of a flagella determined? (inbacteria)
    The speed by the proton motive force (mot protein next to MS and C rings)
    The motion is either peritrichous (slow and one direction) or polar (fast and can spin around)
  • 3 Microbial Metabolism

  • What is a macronutrient and what is a micronutrient? (and example)
    A macronutrient is required in large amounts, e.g. potassium
    A micronutrient is required in trace amounts, e.g. metal ions (Fe)
  • 3 major prokaryotic transport mechanisms?
    - simple transport: proton motive force
    - group translocation: chem. modification of transported substance driven by phosphoenolpyruvate (PEP)
    - ABC transporter: Energy from ATP. Periplasmic binding proteins.
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