Question

in the living cell, histone proteins pack dna into a repeating array of dna - protein particles called what? choose one: o heterochromatin o euchromatin o nucleosomes o octamers o beads on a string

Explanation:

Histone proteins bind to DNA and form a basic unit of chromatin structure known as nucleosomes. Nucleosomes are the repeating DNA - protein particles formed by the packaging of DNA by histones. Heterochromatin and euchromatin are different states of chromatin condensation. Octamers are the histone - protein complexes (two each of H2A, H2B, H3, and H4) around which DNA wraps to form a nucleosome. "Beads on a string" is a description of the appearance of chromatin at a certain level of organization where nucleosomes are the "beads" and linker DNA is the "string".

Answer:

C. nucleosomes