The energy of the sun is converted into usable energy for the cell in the form of _________.

a) ADP
b) ATP
c) CO2
d) glucose

37. The innermost electron shell of an atom holds a maximum of ______ electrons.

a) 2
b) 4
c) 6
d) 8
e) 10

38. The pH of the fluid in your stomach is around pH 2. The fluid is ____________.

a) acidic
b) basic
c) neutral

39. The chemical bond that results in the transfer of electrons is a _______ bond.

a) hydrogen
b) covalent
c) polar
d) ionic

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