Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

TopicSkillDifficulty

12 questions

SA-AC-PD-0011 markL1 FoundationCalculatorAmino acids

A zwitterion has

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SA-AC-PD-0121 markL1 FoundationCalculatorPeptides

The link between amino acids in a protein is

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SA-AC-PD-0021 markL2 StandardCalculatorAmino acids

In strongly acidic solution, glycine exists as

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SA-AC-PD-0032 marksL2 StandardCalculatorPeptides

Calculate

M_r

of the dipeptide formed from glycine (

M_r

75) and alanine (

M_r

89).

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SA-AC-PD-0041 markL2 StandardCalculatorPeptides

How many water molecules are released when 5 amino acids form a single polypeptide chain?

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SA-AC-PD-0051 markL2 StandardCalculatorPeptides

Proteins are hydrolysed in the lab by

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SA-AC-PD-0061 markL2 StandardCalculatorPeptides

At its isoelectric point, an amino acid in electrophoresis

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SA-AC-PD-0071 markL2 StandardCalculatorAmino acids

Amino acids have high melting points because

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SA-AC-PD-0081 markL2 StandardCalculatorDNA

In DNA, guanine pairs with

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SA-AC-PD-0091 markL2 StandardCalculatorDNA

Cisplatin works as an anticancer drug by

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SA-AC-PD-0101 markL2 StandardCalculatorAmino acids

Which amino acid is not optically active?

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SA-AC-PD-0111 markL2 StandardCalculatorDNA

The two strands of DNA are held together by

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