Microbiology Lab Exercise 7-8

  1. depending on the amount of secretions produced and their consistency, the secretions are sometimes visible around row bacteria
    slime layer
  2. slime layer form a well defined structure around the bacterium
    capsule
  3. having a very defined structure as well as a slime layer around a bacteria
    glycocalyx
  4. elimination of metabolic wastes and prevention of dehydration (drying)
    function of capsule
  5. what factors determine the exact composition of a capsule?
    polysaccharides, glycoproteins, polypeptides
  6. which two staining techniques are combined in the capsule stain
    direct staining and negative staining
  7. microorganism used in the capsule stain in lab
    K. pneumoniae
  8. Is heat fixing used in capsule stain?
    no heat fixing in capsule stain
  9. extremely resistant to heat, drying out and many chemicals
    endospore
  10. metabolic functions at an almost undetectable level
    dormant state
  11. What is the purpose of endospores
    to ensure the survival of a bacterium through periods of environmental stress
  12. what is the spore coat made of?
    cystine rich keratin like proteins
  13. the genera of bacteria that have endospores
    bacillus and clostridium
  14. what type of cultures should be used with endospore staining
    24 hr 72 hr
  15. genera of bacteria that have endospores
    bacillus magaterium
  16. why is heat used in endospore staining ?
    used to drive a stain into the endospore
  17. The names of the two methods used to stain endospores
    Schaeffer-Fulton and Dorner method
Author
hey_itsdarra
ID
323710
Card Set
Microbiology Lab Exercise 7-8
Description
exam 1
Updated