Scientific Models Always Require memorization
Have limitations**
Are complete
Represent Old Information
(The answer is Have Limitations) I hope this helps.

it would lead to upper respiratory infections and pneumonia.

where is the scientific experiment?

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.