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Organic Chemistry and Analysis (OA3.2 Amino acids, peptides and proteins)
Quick questions on Amino Acids, Peptides and Proteins (OA3.2) - Eduqas A-Level Chemistry
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is charge at extreme pH?Show answer
In acid the molecule is positive (carboxylate protonated); in alkali it is negative ( deprotonated). Reversing these loses the mark.
What is peptide bond is an amide?Show answer
The peptide bond is the amide linkage formed by condensation; describing it as an ester or a simple "join" loses marks.
What is q1?Show answer
Draw the zwitterion of the amino acid glycine, . [1 mark]
What is q2?Show answer
Name the bond formed when two amino acids react, and the type of reaction. [2 marks]
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