Final answer:
Proteomics is the study of the entire set of proteins expressed by a given type of cell under certain environmental conditions. A proteome is dynamic and under constant flux, making it more complicated and useful than the knowledge of genomes alone.
Step-by-step explanation:
Proteomics is the study of the entire set of proteins expressed by a given type of cell under certain environmental conditions. In a multicellular organism, different cell types will have different proteomes, and these will vary with changes in the environment. Unlike a genome, a proteome is dynamic and under constant flux, which makes it more complicated and more useful than the knowledge of genomes alone.