bacterial reproduction and growth

• in what way does bacteria reproduce


  asexually by binary fission (ideally in a sustainable envrionment)
• what is needed for bacteria to reproduce quickly by binary fission


  a sustainable environment
• in optimum conditions how often do bacteria divide


  every 20 minutes
• what 4 categories are the micro-organisms growth requirements split into


  nutrients , temperature , ph and oxygen requirement
• list example of how nutrients may be provided to bacteria in a lab


  a nutrient agar or nutrient liquid broth
• what is the usual source of carbon for a bacteria growth medium


  glucose
• what are the nutrients found in a nutrient broth or an agar plate ( to help with the growth of bacteria)


  nitrogen and carbon
• how is nitrogen provide to bacteria growing in a lab


  as nitrate ions in a growth medium
• what is nitrogen needed for bacteria growth


  for the synthesis of nucleic acids and amino acids
• what regulates a bacteria's metabolism


  enzymes
• what temperature range is required for enzymes to regulate a bacteria's metabolism


  25-45 degrees Celsius
• what i the standard human body temp


  37 degrees
• what conditions do most bacteria favour


  alkaline
• in what conditions do most fungi grow better in


  neutral and slightly acidic
• in what conditions do bacteria grow better in


  slightly alkaline conditions
• what is meant by a obligate aerobes


  these are organisms that can only survive and metabolise in the presence of oxygen
• what is meant by a obligate anaerobes


  these are organisms that can only survive and metabolise in the absence of oxygen
• what is meant by a facultative anarobes

  these are organisms that prefer to metabolise in the presence of oxygen but can survive without it
• an animal that requires oxygen to survive and metabolise is known as what


  obligate aerobes
• an animal that can only survive and metabolise in the absence of oxygen is known as what


  obligate anaerobes
• an animal that can prefers to survive and metabolise in the presence of oxygen is known as what

  facultative anarobes
• give an example of a obligate anaerobe that grows in wounds


  clostridium perfringens
• What does Clostridium perfringens cause?


  gas gangrene
• What does Clostridium perfringens produce to cause gas gangrene


  toxins or poisons
• what are the symptoms caused by clostridium perfringens in wounds


  blisters under the skin , foul smelling fluid and jaundice
• how do you treat the symptoms caused by clostrididum perfringens


  the use of a hyperbaric oxygen chamber with the air pressure 2.5x higher than atmospheric pressure
• how will a hyperbaric chamber help with the clostridium perfringens


  since c. perfringens is an obligate anaerobe it cannot survive and grow in the presence or oxygen
• list examples of substrates that can be used to release energy in respiration


  glucose fatty acid glycerol and amino acids
• give an example of a facultative anaerobe


  E. coli
• give an example of a obligate aerobe


  mycobacterium tuberculosis