Aerobic Respiration

The cells of which of these organs undergo aerobic respiration?
a. heart
b. lungs
c. skin
d. kidneys
e. all of these
I THINK b
After fermentation, lactic acid is converted to pyruvic acid in the…
a. Blood stream
b. Liver
c. Muscles
d. Heart
e. Lungs
i think A
specifically, what process yields the co2 that is exhaled during breathing?
c3 cycle
glycolysis
fermentation
chemismosis
conversation of pyruvate to acetyl CoA and the krebs cycle
i thnik answer is C