During the synthesis stage of the cell cycle, a cell makes (replicates its own) DNA.
Economic profits equals total revenues minus the sum of explicit costs and implicit costs. Since explicit costs are already subtracted when arriving at the accounting profit, we can find economic profit by subtracting the implicit costs from the accounting profit.
implicit cost or imputed cost the OPPORTUNITY COST to a FIRM of using resources owned by the firm itself to produce its output. For example, if a firm occupies a building that it owns, it forgoes the opportunity of renting it out for some other use.