Daily Newsletter March 5, 2012

Daily Newsletter March 5, 2012

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Administrative Note: There are two notes today.
1) This is a milestone week. On Thursday you will have your milestone exam.
2) We have passed the midpoint of the semester, and this is when a planned change is to occur. You will notice that each news letter has guiding comments or questions to help you build your own Learning Objectives for this week.

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Today's Topic: Vocabulary

Generally your not asked to work on vocabulary as a sole topic, but in this case it is important to become familiar with various terms used to describe optimal conditions for bacterial growth. Your challenge today will involve working through this vocabulary.

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Today's Challenge: Vocabulary.
Provide a definition and example for each of these terms:

• Defined media
• Complex (undefined) media
• Broth (liquid) culture
• Solid (agar) culture
• Aseptic Technique
• Pure Culture
• Chemostat
• Batch culture
• Psychrotroph
• Psychrophile
• Mesophile
• Thrmophyle
• Hyperthermophile
•  Acidophile
• Alkaliphiles
• Halophiles
• Osmophiles
• Xerophiles
• Obligate Aerobes
• Facultative Anaerobes
• Obligate Anaerobes
• Microaerophiles
• Aerotolerant anaerobes*
• Superoxide
• Fastidious
• Growth Factors
• Trance Minerals

*Aerotolerant Anaerobes:  This is an oxygen utilization term that is often down played.  There are bacteria that do not require oxygen as a terminal electron acceptor, but they are able to survive in atmospheric oxygen.  This is different than the obligate anaerobes which are killed (or inhibited) in atmospheric oxygen.  Look to the Streptococci as aerotolerant.

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Learning Objectives:
This first newsletter has an easy objective, learn the terms listed above. By writing out a definition and an example, you will have a better grasp on these terms. You will see these terms repeatedly, as they help us to identify growth conditions for bacteria. It would benefit you to learn them.