Not sure if this counts as biology but is it possible to have a natural red colored eyes? And if it is, that’s the cause of it for a color eyes to result like that ( also this may or may not be a place to rp with an old friend. So warning, lots of msgs ahead)

this is math not biology xd

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.