Final answer:
The substance that nearly every cell in the animal body contains, which provides instructions for making proteins, is DNA.
Step-by-step explanation:
The substance that nearly every cell in the animal body contains, which provides instructions for making proteins, is DNA.
DNA is a nucleic acid found in cells and serves as a blueprint for making proteins. Genes, which are segments of the DNA molecule, code for the order of amino acids in each protein. Ribosomes are the structures in the cytoplasm where proteins are made.