What determines a blood type to be "O"

the type of surface protein.

Explanation:

On the exterior portion are trans-membrane glycoproteins are sugar residues with specific orientations that give rise to blood types. The sugar residue prevents people with different red cells from mixing.

Type O has no antigen b/c no sugar disposition - doesn't look any different to the immune system. Has antibodies against both A and B; has no antigens which means have both antibodies

jomady. when the body perspires due to the temperature rising, trepidation, exercise, or a disease known as hyperhidrosis, then you would lose the sodium and potassium stored in your body, also known as the na+/k+-atpase enzyme.