Multiple choice

The nucleosomes

  1. contain only DNA and non histone proteins

  2. have a core of histones with DNA wound around

  3. contain histones that are a family of small, negatively charged proteins

  4. contain histones that cannot be displaced by chromatin remodelling complexes

  5. containing DNA itself provides energy for its folding
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The basic repeating structural (and functional) unit of chromatin is the nucleosome, which contains nine histone proteins and about 166 base pairs of DNA.

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