<prompt> All are TRUE regarding Net Protein Utilisation, exceptIt is the increase in weight per unit weight of protein consumedNPU of cow - milk is 81NPU of average Indian foods is 50 - 80If NPU is low, more protein is required  <response>: Net protein utilization NPU is the percentage of ingested protein retained inside the body not an increase in weightIt is a product of digestibility coefficient and biological value divided by 100.The protein requirement varies with the NPU of dietary proteins. If the NPU is low, the protein requirement is high, and vice versa.NPU of protein for Indian diets varies between 50 and 80.NPU is 100 for egg best protein and about 75 for milkNPU Retained nitrogen Nitrogen of food x 100NPU Digestibility coefficient x Biological value 100About option aIncrease in weight per unit weight of protein consumed is known as protein efficiency ratio. 