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Question
What is the approximate diameter of a eukaryotic cell nucleus?
Options
10⁻⁶ m (1 micrometre)
10⁻⁹ m (1 nanometre)
10 micrometres
10⁻³ m (1 millimetre)
MCQ
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Solution
The eukaryotic cell nucleus has a diameter of approximately 10⁻⁶ m or 1 micrometre. Despite this very small size, the nucleus must contain and organise the entire complement of genomic DNA (approximately 2.2 metres in length when stretched), requiring multiple levels of hierarchical DNA packaging.
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