Biological position of viruses: Viruses lack a cytoplasmic membrane and they do not have the basic component of a cell. They can only replicate inside the host cell. Outside the host cell, they are non-living.
The yearling program was, however, more variable with a maximum profit of $356 per head compared with $206 for calf fed, and a maximum loss of $171 per head compared with $152 for the calf fed program.
Most importantly, production cost information may be used to view the cow-calf operation based on total dollars ($24,812), dollars per breeding cow ($248), and dollars per hundredweight ($58) of calf production.