How does bacteria sense food?

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deostroll
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How does bacteria sense food?

Post by deostroll » Wed Dec 05, 2007 4:27 am

It need not be a "bacteria" in question. How do unicellular organisms generally sense food? Or else comment on if sense is the appropriate word to be used in the prevous question...
PS: I happen to be a philosopher, rather than a true scientist...

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mith
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Post by mith » Wed Dec 05, 2007 6:51 am

chemotaxis
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MichaelXY
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Post by MichaelXY » Wed Dec 05, 2007 6:58 am

Mith, you are a venerable fountain of knowledge. Have you considered playing Jeopardy?

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Post by mith » Wed Dec 05, 2007 8:06 am

I'd fail on the pop cultures part. I've probably only seen one whole episode of mash.
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Post by MrMistery » Wed Dec 05, 2007 1:11 pm

asides from dave's future in television trivia, a bacteria tastes just like a human smells and tastes: a specific particle binds to a receptor on the surface of the bacteria, initiating a signal transduction pathway that tells it "Hey, there's food round these parts"
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Post by deostroll » Wed Dec 05, 2007 1:49 pm

MrMistery wrote:asides from dave's future in television trivia, a bacteria tastes just like a human smells and tastes: a specific particle binds to a receptor on the surface of the bacteria, initiating a signal transduction pathway that tells it "Hey, there's food round these parts"


So this is necessarily a kind of environment change around the cell?
PS: I happen to be a philosopher, rather than a true scientist...

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Post by mith » Wed Dec 05, 2007 4:32 pm

sense requires stimulus
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