C/N of bacteria cell is

C : N ratio is a ratio of the mass of carbon to the mass of nitrogen in a substance. The carbon to nitrogen ratio is significant in composting because microorganisms need a good balance of carbon and nitrogen to remain active. High C/N ratios can lead to prolonged composting duration and low C/N ratios enhance nitrogen loss.
C/N of a bacterial cell is 5 : 1, i.e. 5% of carbon with 1% nitrogen in each cell of bacteria.