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UVU - MICR 2060 - Class Notes - Week 5

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> > > > UVU - MICR 2060 - Class Notes - Week 5
background image This week in Microbiology we covered many types of medium that allow bacterial  growth. We even had a worksheet that went through some of the mediums and certain 
characteristics for them and found out what pathogen was harming a patient, which ended up 
being E. Coli. Here is a brief summary of this past week: 
Tuesday, 2­5­19 There are two kinds of media 1. Complex, which are certain organic substances that are used to see if they help in the  growth of bacterium. 2. Defined, which are used for basic research.  Enriched agar (addition of blood) 1. Chocolate agar, this is a brown color that indicated bacteria is lysed all the way 2. Blood agar, this is red and indicated that bacteria is partially lysed.  A selective medium allows certain bacteria to grow while inhabits other bacteria from growing 
on the plate
Differential medium has ingredients that allow us to see the appearance of different bacteria Simmon’s Citrate agar  1. Allows us to see if microbe is fermenting  2. pH indicator to see if acidic or basic from the by­products produced
3. sign to see if microbe is growing is if the color changes from green to blue
Thursday, 2­7­19 Growth is shown in increasing cells. The equation for growth is optimal density/time. The 
growth rate doubles, ex: 1 cell makes 2, 2 cells make 4, ect.
Cells grow by binary fission 1. Replication of DNA, RNA, cytoplasm and other intracellular particles 2. In bacilli, the cell elongates
3. Splitting of the cell through the middle to produce two daughter cells
Generating time gets effected by 1. Temperature 2. pH change
3. osmotic pressure
4. amount of nutrients

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School: Utah Valley University
Department: OTHER
Course: microbiology
Professor: Margaret Beucher
Term: Spring 2019
Tags:
Name: Fifth week, class notes
Description: A little overview of culturing bacteria
Uploaded: 02/11/2019
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School: Utah Valley University
Department: OTHER
Course: microbiology
Professor: Margaret Beucher
Term: Spring 2019
Tags:
Name: Fifth week, class notes
Description: A little overview of culturing bacteria
Uploaded: 02/11/2019