A virus also lacks the ability to even duplicate its own genetic material without the help of a host cell. The set of features a virus lacks is much larger. O

A virus also lacks the ability to even duplicate its own genetic material without the help of a host cell. The set of features a virus lacks is much larger. On the other hand, all animals depend on another form of life to provide energetic molecules. As this organism (presumably) depends on ATP from another source, we depend on energy providing molecules like carbs, fat, protein.