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 of capital is opportunity cost, if money is used one of best alternatives for effective use of resources. Suppose, I have $ 100,000, I can deposit it in bank and earn $ 3500 as bank interest but I did not invested it in saving bank account and invested in the shares of XYZ company.