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MONOMErS & POLYMERS

Discussion of all aspects of biological molecules, biochemical processes and laboratory procedures in the field.

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MONOMErS & POLYMERS

Postby bio1fall » Tue Oct 20, 2009 1:44 am

I need some examples of monomers & polymers to understand them....

something maybe like..
name.. & molecular formula...

I have an idea of monomer....
maybe like the functional groups??
Carbxyl.. CHO2? is that even right???

ahh im so lost.
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Postby mith » Tue Oct 20, 2009 4:03 am

find the polymer before finding the monomer.

Example, styrofoam is made from polystyrene
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Postby kolean » Tue Oct 20, 2009 12:42 pm

Mono means one, and the mono'mer' is one unit of something.
Poly means many, thus poly'mer' is many units of something.

A classic example in biochemistry could be amino acids. Amino acid (the monomer)s are connected by a peptide bond, to make a polypeptide. Polypeptides can be long enough to make a complete protein product.

Another example could be sugars/carbohydrates. Look at a monomer of a sugar unit (glucose for instance) and then think what many sugars covalently bonded together could be (starch or glycogen).

Think of oils (lipids).

In chemistry, "poly" of many units make up plastics. Just look up what recycling symbols on containers to find the ones that we use the most in everyday life. Like milk containers are usually '1' which is PETE.
http://www.thedailygreen.com/green-home ... ics-460321
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Re:

Postby JackBean » Thu Oct 22, 2009 8:32 am

kolean wrote:Think of oils (lipids).

Really lipids and polymers? :?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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Postby kolean » Fri Oct 23, 2009 3:26 am

True. I was thinking of the repeating carbon unit in the fatty acids, but that is just a long molecule of carbon and hydrogen. And there is double bonds here and there, so not a true repeating unit. And most fatty acids are attached to the backbone of glycerol, but suppose that all three fatty acids were the same, could it then be a polymer? A defined polymer of 3?
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Postby JackBean » Fri Oct 23, 2009 5:23 am

You mean trimer? :-P
I don't think so, because you have some molecule connecting your units. That doesn't seem like oligo/polymer to me
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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Postby kolean » Fri Oct 23, 2009 2:43 pm

Yeah. Lipids are not polymers; no repeating units connected by a bond. Oops. :oops:
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Re: MONOMErS & POLYMERS

Postby littlegirl » Thu May 27, 2010 7:15 pm

hey so umm i have a question what are the symbols of mers and polymers???
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Postby JackBean » Fri Jun 04, 2010 7:28 am

symbols? What symbols?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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