Organisms that get chemical energy from carbon sources found in food are called

Heterotrophic organisms use organic compounds —usually from other organisms — as carbon sources.Autotrophic organisms use carbon dioxide (CO2) as their only or main source of carbon. Many autotrophicbacteria are photosynthetic and get their carbon from the carbon dioxide in the atmosphere.

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.