The cellular component that includes nucleic acid with structural protein is the chromosome.

Here's why:

* Nucleic Acid: Chromosomes are composed of DNA (deoxyribonucleic acid), which carries the genetic information of an organism.

* Structural Protein: DNA is wrapped around proteins called histones. Histones help to package and organize the DNA into a compact form, allowing it to fit within the nucleus of the cell.

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