From Mock A · Paper 2: Organic and Physical Chemistry
8.32 marks
Draw the species formed by glycine (H₂NCH₂COOH) at pH 1 and at its isoelectric point.
From Mock A · Paper 2: Organic and Physical Chemistry
8.42 marks
Explain how cisplatin acts as an anticancer drug and give one disadvantage.
From Mock A · Paper 2: Organic and Physical Chemistry
8.52 marks
Explain why there are two hydrogen bonds between adenine and thymine but three between guanine and cytosine.
From Mock A · Paper 3: Practical skills, all content and multiple choice
321 mark
Which bonds hold the α-helix of a protein in shape?
From Mock B · Paper 2: Organic and Physical Chemistry
11.12 marks
Explain what is meant by a zwitterion, using aminoethanoic acid as an example.
From Mock B · Paper 2: Organic and Physical Chemistry
11.22 marks
Explain how cisplatin acts as an anticancer drug.
From Mock B · Paper 2: Organic and Physical Chemistry
11.32 marks
Explain the role of hydrogen bonds in the secondary structure of proteins.
From Mock B · Paper 3: Practical skills, all content and multiple choice
371 mark
In DNA, the bases are attached to
From Mock C · Paper 2: Organic and Physical Chemistry
11.13 marks
Explain how the primary and tertiary structures of a protein differ, and how the tertiary structure is maintained.
From Mock C · Paper 2: Organic and Physical Chemistry
11.22 marks
Explain how DNA's two strands are held together.
From Mock C · Paper 2: Organic and Physical Chemistry
11.33 marks
Explain why many drugs are made as a single enantiomer rather than a racemic mixture.
From Mock C · Paper 3: Practical skills, all content and multiple choice
371 mark
At low pH, an amino acid exists mainly as
Score 0 / 23 · 0 of 12 marked
This paper is written by Plasmo in the style of the AQA A-Level Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.
Amino acids, proteins and DNA Exam Questions: AQA A-Level Chemistry | Plasmo