What stores materials that the cell won't use immediately?

If a set of instructions that determines all of the charactersitics of an organism is comparedto a book,and a chromosme is compared to chaper in the book,then what might be compared to a paragraph in the book?

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Me the formula cacl2 represents the compound