username2899906
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On a class test, I got this question wrong:

"In the space below, draw a diagram to show the dipeptide produced when two molecules of glycine are joined together"

As the mark scheme doesn't actually contain a drawing of it, I don't know how it is actually meant to look. Please help!
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Bio 7
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H2N-CH2-CO - NH-CH2-CO2H

Use that to draw the structural formula. You can google Glycine Dipeptide and find it there also.
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Reality Check
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(Original post by Goldfish4343)
On a class test, I got this question wrong:

"In the space below, draw a diagram to show the dipeptide produced when two molecules of glycine are joined together"

As the mark scheme doesn't actually contain a drawing of it, I don't know how it is actually meant to look. Please help!
Glycine is the simplest AA. You should know already that a-amino acids consist of a central carbon atom bonded to an NH3 (at physiological pH it exists as NH2+), COOH (again, as COO-), H and a variable group, named R. In Glycine, R = a single hydrogen.

From this information, try drawing out a glycine dipeptide. You know the R group you need - all you need to do is draw the condensation reaction between the two monomers to form the peptide bond.
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