Need help to identifying uknowns substance

blackpencil75 · Post by **blackpencil75** » Mon Sep 28, 2009 5:54 am

Need help to identifying uknowns substance

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Post by blackpencil75 » Mon Sep 28, 2009 5:54 am

Now we are testing some substance on medium for micro-bacterial. We want to know how to distinguish (or demonstrate) that substance is nutrition or Growth Hormon. Thank

JackBean · Post by **JackBean** » Mon Sep 28, 2009 8:06 am

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Post by JackBean » Mon Sep 28, 2009 8:06 am

Add it to one (or half) of the Petri dish and compare the number of bacteria

http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

blackpencil75 · Post by **blackpencil75** » Tue Sep 29, 2009 3:50 am

Re: Need help to identifying uknowns substance

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Post by blackpencil75 » Tue Sep 29, 2009 3:50 am

But both of them (Nutrition or Growth Hormon) help microbacteria growth. So how you can sure that substance should be Nutrition or that thing should be Growth Hormon.

mith · Post by **mith** » Wed Sep 30, 2009 2:00 am

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Post by mith » Wed Sep 30, 2009 2:00 am

Remove food, add substance. Bacteria die without food.

Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

JackBean · Post by **JackBean** » Fri Oct 02, 2009 10:18 am

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Post by JackBean » Fri Oct 02, 2009 10:18 am

But they will also die without growth hormone, won't they?

BTW do bacteria even have growth hormones? Isn't that only case of mammals (or animals?)

http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

MrMistery · Post by **MrMistery** » Sun Oct 04, 2009 3:43 am

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Post by MrMistery » Sun Oct 04, 2009 3:43 am

what's a growth hormone in bacteria? as far as i know if you give bacteria food and oxygen they will grow indefinitely, they don't need any other chemicals to tell them to do so.

"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

JackBean · Post by **JackBean** » Sun Oct 04, 2009 11:02 pm

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Post by JackBean » Sun Oct 04, 2009 11:02 pm

I think so too

http://www.biolib.cz/en/main/

Cis or trans? That's what matters.