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Date May 2017 Marks available 1 Reference code 17M.2.HL.TZ1.2
Level Higher level Paper Paper 2 Time zone Time zone 1
Command term State Question number 2 Adapted from N/A

Question

Nucleosomes help to regulate transcription in eukaryotes.

State the components of a nucleosome.

[1]
a.i.

Nucleosomes help to regulate transcription in eukaryotes.

State a chemical modification of a nucleosome that could impact gene expression.

[1]
a.ii.

Markscheme

DNA and histone

a.i.

methylation/acetylation/phosphorylation/epigenetic tags/modification of nucleosome tails/N-terminal tails

a.ii.

Examiners report

[N/A]
a.i.
[N/A]
a.ii.

Syllabus sections

Additional higher level » Topic 7: Nucleic acids » 7.1 DNA structure and replication
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Additional higher level » Topic 7: Nucleic acids
Additional higher level

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