Question 19M.1A.HL.TZ2.8
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1A.HL.TZ2.8 |
| Level | HL | Paper | 1A | Time zone | TZ2 |
| Command term | Identify | Question number | 8 | Adapted from | N/A |
Which statement correctly describes genome and proteome?
A. Only the genome but not the proteome can be analysed using gel electrophoresis.
B. The genome and the proteome are the same in all tissues in an organism.
C. In cells of different tissues, the genome is the same while the proteome varies.
D. Only mutations in the proteome but not in the genome cause any variability.
[1]
C
This question showed some weakness of understanding among better candidates. In section 3.1 it states that the genome is the whole of the genetic information of an organism while in the protein section 2.1 it mentions the fact that every individual has a unique proteome. In 3.5 it clearly states that gel electrophoresis is used to separate proteins or fragments of DNA according to size, therefore excluding A as an answer. Answer B is incorrect, as it is mentioning tissues (unicellular organisms do not have tissues) and the proteome differs in different tissues. Answer D is too obviously wrong so hardly any candidate chose it.
