Which of the following represents all the molecular interactions in a cell?

The interactome is the correct choice because it encompasses all the molecular interactions that occur within a cell. This includes the interactions between various types of molecules, such as proteins, nucleic acids, lipids, and small metabolites. By studying the interactome, researchers can gain insights into how these molecules communicate and work together to drive cellular processes, functioning as a complex network that is essential for understanding cellular functions and behaviors.

In contrast, the metabolome focuses specifically on the complete set of metabolites, which are small organic molecules involved in metabolism. The proteome refers to the entire set of proteins expressed by a genome in a particular cell or organism at a specific time, while the genome represents the complete set of genetic material in an organism. Although all these concepts are significant in molecular biology, they do not collectively represent the full range of molecular interactions that the interactome does.