PLEASE HELP Explain how cells are able to differentiate and how is cell is able to tell when a specific gene should be produced before translation occurs. Use the following terms in your answer DNA, gene expression, proteins, transcription factors, RNA polymerase.

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Answer;

2 atoms of nitrogen

Explanation;A compound is a substance that is made up of different types of atoms from different elements. For example water is a compound made up of hydrogen and oxygen atoms.In this case; Ni(NO₃)₂, is an example of a compound. It is made up of 1 nickel atom,  2 atoms of nitrogen, and six atoms of oxygen.