At 3:00 PM, you inoculate 1 x 103 cells in a closed flask on nutrient broth. The cells have a lag phase that lasts an hour. At 8:00 PM, the culture enters stationary phase. At that time, there are 6.5 x 107 cells in the flask. Calculate the number of generations (n), the number of generations/hour (k) and the doubling time or number of hours/generation (g).

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answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.