at least one additional source per question!! 3) How could the bacterial microbi

Question

at least one additional source per question!!

3) How could the bacterial microbiome impact obesity?

4.) What is Clostridium difficile and why is a Clostridium difficile infection so difficult to treat?

5.) How can bacteria impact cardiac disease?

6) How might the bacterial microbiota affect type 2 diabetes?

7) How can bacteria impact autoimmune diseases?

**** Watch the TEDtalk video from Dr. Bonnie Bassler, a top researcher at Standford University and Research online.  http://www.ted.com/talks/bonnie_bassler_on_how_bacteria_communicate.html

8.) How does Vibrio fischeri control bioluminescence?

9.) Define pathogenicity and virulence.

10). What are anti-quorum sensing molecules and what might they replace someday?

Explanation / Answer

6.gut microbiota may also influence the development of conditions characterized by low-level inflammation, such as obesity and type 2 diabetes, through systemic exposure to bacterial lipopolysaccharide derived from the intestinal microbiota.

7.development of autoimmune diseases like arthritis is dependent on the gut microbiota.P. copri strains from recent-onset RA patients had fewer genes to metabolize purines and vitamins.

8.Bioluminescence in the marine bacterium Vibrio fischeri is controlled by the excretion of a N-acyl homoserine lactone (HSL) autoinducer which interacts with a regulator, LuxR, and activates transcription of the lux operon at high-cell density. This system has become the prototype for quorum sensing in many bacteria

9.Pathogenicity refers to the ability of an organism to cause disease (ie, harm the host). This ability represents a genetic component of the pathogen and the overt damage done to the host is a property of the host-pathogen interactions. Virulence, a term often used interchangeably with pathogenicity, refers to the degree of pathology caused by the organism.

10.anti-quorum sensing (AQS) ability of S. persica extracts on E. faecalis. Extracts from the bark, leaves, root andshoots were tested against Chromobacterium violaceum.

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