Chapter 6 Microbial Growth
Psychrophile- organisms that grow in environments with optimum temperature at 15C
Psychrotrop- organisms that are not inhibited by refrigeration; cause food spoilage,
optimum temperature 20C
Mesophile- organisms that grow in env
Figure 24.12 Streptococcus pneumoniae, the cause of pneumococcal
- Outside cell wall
- Made of chains of flagellin (protein)
- Attached to a protein hook
- Anchored to the wall and membrane by the basal body
Figure 4.7 Arran
Chapter 5 Microbial Metabolism
Catabolism provides the building blocks and energy for Anabolism.
- Anabolic need ATP and need to energy to buildup, catabolic make ATP.
Catabolic reactions can fuel anabolic reactions.
CATABOLIC AND ANA
Chapter 5 Microbial Metabolism PART TWO
OVERVIEW OF RESPIRATION AND FERMENTATION
WHAT IS FERMENTATION?
- Any spoilage of food by microorganisms (general use).
- Any process that produces alcoholic beverages or acidic dairy
products (general use).
- Any la
2 0f 3 following organisms would be more difficult to kill.
An aerotolerant anaerobe growing in a tube ofThioglycollate media would be expected to be
found where in the tube.
Evenly throughout the tube.
Which of the following chemical r
Triclosan which inhibits the formation oflipids to disrupt cellular membranes and is used in a
varirty ofhousehold cleaners, hygiene products and incorporated into plastic kitcheware is an
example ofwhat class or'disinfectants'.
B i sphe
Microwaves kill by heat and are therefore highly anti-microbial
Which ofthe following statements best describes commercial sterilization?
Kills Closbidium botulinum endospores.
Which term is applied when you remove microbes from a limited area
What are the defining characteristics of the helminthes?
o Eukaryotic, complex life cycles
o Multicellular tissues and organs
o Chemoheterotrophic- Ingest and absorb food
Parasitic helminthes systems?
o Reduced digestive system
o Reduced ner
Bacteria do not grow in size they grow in population
Temperature is very important for pathogens to grow, most of th