DP Biology (last assessment 2024)
Question 19N.3.HL.TZ0.9b
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.3.HL.TZ0.9b |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | State | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
19N.3.HL.TZ0.9b
The figure represents a section of DNA.
(b)
Open reading frames have start and stop codons. State one other characteristic of open reading frames.
[1]
Markscheme
continuous stretch of codons «between start and stop codon»
OR
can contain introns
OR
sufficient nucleotides to code for a polypeptide chain ✔
