Question

Chapter 7: Microbial Nutrition, Ecology, andGrowth.

Please be sure to include 2 days of posting forthis chapter.

Select one of the following and discuss:

• Types of nutrients (essential, micro, macro and traceelements)
• Carbon-based nutrition types: heterotroph, autotroph,phototroph, chemotrophs
• Chemical analysis of cell contents
• Methanogens
• Saprobic microbes
• Parasitic microbes
• Diffusion vs. Osmosis
• Facilitated diffusion
• Temperatures: psychrophile, mesophile, thermophile
• Gas requirements: obligate aerobes (give examples)
• Gas requirements: obligate anaerobes (give examples)
• Gas requirements: facultative anaerobes (give examples)
• Microaerophiles vs. aerotolerant anaerobes
• Capnophiles
• pH: neutrophiles, acidophiles and alkalinophiles
• Osmotic pressure: halophiles and osmotolerant
• Barophiles
• Relationships: symbiosis
• Relationships: mutualism
• Relationships: commensalism
• Synergism and antagonism
• Interactions between microbes and humans
• Biofilms--quorum sensing
• Basis of population growth: binary fission
• Generation time-exponential
• Steps of Growth curve (visual on page 210)
• Other methods to analyze population growth (direct count,automated counters, turbidity)

Please change the subject line to the topic you picked,we can avoid similar topics this way.

If two chapters are being discussed: the first post is due byMonday at 11:59pm and the second chapter is due by Wednesday at11:59pm. Each original post for the individual chapters MUST beposted on different days. Any replies can be made on the same dayas an original post but you are required to complete four separatedays of posting (not four posts in one day). When two chapters arebeing discussed you should post 2 times for each chapter for atotal of 4 posts. Posts done on topics already discussed will notbe given credit. Please read through the entire discussion boardbefore choosing a topic to post on.