DP Chemistry (last assessment 2024)
Question 19M.3.hl.TZ2.b
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.3.hl.TZ2.b |
| Level | hl | Paper | 3 | Time zone | TZ2 |
| Command term | Describe | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
19M.3.hl.TZ2.b
Amino acids contain both acidic and basic functional groups.
Describe what is meant by the genetic code and how it relates to protein synthesis.
[2]
Markscheme
sequence of bases in DNA [✔]
codon/triplet code/each set of three bases codes for an amino acid [✔]
Examiners report
This part was poorly answered by many candidates and was unable to state that genetic code is a sequence of bases in DNA and each codon codes for an amino acid. Often complex answers were written which were incorrect.
