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Old 28 Oct 2009, 8:47 PM   #64 (permalink)
sam5
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Re: Biology hsc exam who ready!!

Quote:
Originally Posted by InaudibleMelody View Post
Hey guys.

I am having a lot of trouble understanding the relationship between polypeptides and proteins.. What are polypeptides anyway? I know the deal with mRNA and tRNA and how DNA controls the production of polypeptides.. But am so stuck on everything else.
atoms make up amino acids. Amino acids make up polypeptides. Polypeptides make up proteins.
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