Bacteria can talk to each other via molecules they produce
themselves. In this way, bacteria can synchronize together and function as one
large unit or colony. The phenomenon is called quorum sensing, and is important
to bacterial metabolism, growth and virulence. Watch the following video on
“How Bacteria Talk”, then read the link below on “Quorum Sensing” to learn more.

Bassler, B.(2009). How Bacteria “talk”. Accessed at

on September 14, 2016.

What is Quorum Sensing? Accessed at
https://www.nottingham.ac.uk/quorum/what.htm
on September 14, 2016.

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Instructions

Prepare a 2- to 3-page paper in which you address the
following questions:

How would you define quorum sensing in bacteria?

How can quorum sensing improve nutrient delivery to
bacteria?

Not all bacterial relationships are harmful like the example
Dr. Bassler gave for the squid and bacterial bioluminescence. Describe an
example of a microbial relationship in the human body that is beneficial. Which
body system is involved (intestinal tract, skin, etc.)? Which bacterial species
is involved? How is it beneficial for both the bacterium and host?

What does the concept of quorum sensing mean for virulence
and disease in humans?

Based on Dr. Bassler’s research on quorum sensing, what
might the “next generation” of antibiotics look like? How might they work?

SLP Assignment Expectations

Format

TUI encourages all students to comply with APA style and
format guidelines for proper citation of references. Use the formatting in your Background page as
a model.

Scholarly Content

Your SLP assignment is considered a scholarly work. Your
final work should include peer reviewed (scholarly) sources. Please use the formatting demonstrated in
your Background section to cite the tutorials and readings from the Overview.

Please keep in mind that you should not use sources such as
“Answers.com” or “Wikipedia” or “Wikianswers.”
None of these are scholarly sources and they can be “modified” by any
registered user which makes them unreliable.

Appropriate Headings and Paper Flow

Remember that you are preparing a formal academic paper.
Your paper should make use of appropriate headings and subheadings. You should not cut and paste the questions
posed and answer them like a “Question and Answer” session. Your finished paper should read like an
academic paper. Upload your final word document to the SLP assignment dropbox.

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