If a person undergoes a prolonged fasting then his urine will be found to contain higher levels of HomeExcretory System MCQsIf a person undergoes a prolonged fasting then his urine will be found to contain higher levels ofQ. If a person undergoes a prolonged fasting then his urine will be found to contain higher levels ofA. KetonesB. Amino acidsC. FatsD. GlucoseAnswer: Ketones