__________ arranges the DNA into the chromosomes in a eukaryotic cell.
Correct answer: C. Histone
- A. Hormones
- B. Elastin
- C. Histone
- D. Nucleosome
Explanation
Histones are small positively charged proteins that the negatively charged DNA winds around, condensing roughly two metres of DNA into a nucleus a few micrometres across. A nucleosome is the resulting bead of DNA wrapped around eight histones, so it is the product of the packaging rather than the agent doing it, which makes it the deliberate near miss here. Elastin is a structural protein of connective tissue.
This question appeared on the UHS MDCAT 2025 paper, which you can sit online with every answer explained.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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