Corynebacterium with an empirical formula C8H17O7N is grown in a batch reactor for the production of the amino acid threonine, with glucose as the sole carbon source. The rate of cell growth and the rate of threonine production are 0.3gm cells/liter.hr and 0.4gm threonine/liter.hr, respectively. Approximately 50% of the energy in the carbon source is released as heat. Estimate (a) the fractions of glucose used for cell mass production and for threonine production; (b) the yields of cell mass based on glucose and oxygen (YX/S and YX/O)