Quote Originally Posted by crunkjuice
they can be zombies all they want but they cannot defy physics or the laws of thermodynamics....they need energy of some source and im pretty sure they dont instantly take up photosynthesis as soon as they become a zombie and if the brain doesnt work then how do they move? the virus has enough power to move a 150+ pound body around?
The T-Virus is essentially a protein crystal with a RNA core. Once the virus makes contact with a cell it is able to infiltrate the nucleolus, and manipulate the cell's DNA. The T-Virus becomes an essential part of the cell, and as the cell replicates, the virus is copied with each division.

The T-Virus will gradually destroy a cell's mitochondria, and replace it with a special organelle which produces a new-found form of energy.[citation needed] As the body becomes self sufficient on this energy, the respiratory and circulatory systems will become vestigial, ending the body's dependence on oxygen
...