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OpenStudy (anonymous):

According to cell theory, which is not made from cells? blood water skin bone

thomaster (thomaster):

skin is made from cells bone is made from a hardening matrix of hydroxyapatite and collagen around entrapped cells. blood is made from plasma and blood cells. Water is made from hydrogen and oxygen. So I think the answer is obvious now :)

OpenStudy (gtxmuqsit):

Water definitely :) H+O2

OpenStudy (aaronq):

"H+O2" ?

thomaster (thomaster):

H2+O

OpenStudy (gtxmuqsit):

sory H2+O

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