A biological fuel cell is another term for a microbial fuel cell, a bio-electrochemical system which drives a current by mimicking bacterial interactions found in nature.

Assimilation is the absorbtion of biological nutrients into the cell

reproduction

A fuel cell oxidizes a fuel source, a standard cell is an electrochemical reaction.

The three biological molecules in the cell that DNA must be separated from are the cell membrane, lipids, and enzymes. The DNA is found in the nucleus of the cell.