1. elisa feels tired because she has a condition that affects whether the right molecules are getting to her cells. if her body were functioning correctly, this is what would happen with oxygen:

2.if her body were functioning correctly, this is what would happen with starch/glucose:

Her oxygen would be traveling throughout her body and carbon dioxide will be released every time she breathes out. The oxygen will come in through the respiratory system which is a body system that helps you breathe with lungs, which then delivers the oxygen molecules to other organs and body systems. Oxygen will go through the circulatory system and circle around until the some oxygen goes in the cells or the stored glucose. Then some Oxygen molecules go into the cells and make energy with Glucose. She would have higher glucose/ healthy sugar to be considered healthy. But if she was healthy she would have glucose in her digestive system( where the food goes when you swallow it some of the parts are the stomach and intestines both small and large) which will be transferred to the circulatory system then it will circle around the system

Explanation: