A prokaryotic cell divides every 25 minutes. If a culture containing 105 cells per mL is grown for 125 minutes, what will be the cell concentration per mL after 125 minutes?

According to given question, a prokaryotic cell divides every 25 minutes (given).Hence, in one division of 25 minutes, two prokaryotic cells are formed.Since, a culture contain 105 cells (given)∴Total division in 125 minutes =12525=5 divisions Hence, cell concentration per mL after 125 minutes = 25 × 105 cells                                                                                    = 32 × 105 cells