The answer is number 4 hope this helps
Answer:
Histone
Explanation:
Histones are the proteins that package the DNA in eukaryotes. DNA winds around a core of eight histones creating an structure called nucleosome that determines genome organization. Nucleosomes group and ungroup in an orderly manner allowing gene trasncription or silencing, respectively.
Osteoporosis, which literally means porous bone, is a disease in which the density and quality of bone are reduced. As bones become more porous and fragile, the risk of fracture is greatly increased. The loss of bone occurs silently and progressively.
This compressed, slender body shape is beneficial because it allows the fish to easily fit into vertical crevices. This is probably why the fish live on coral reefs and in rocky areas, because there are enough crevices for these fish to fit into.
The correct answer is: [C]:
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"T<span>he neuron releases chemical messengers (neurotransmitters) or electrical signals."
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