sunlight photosystem photosystem os ATP ATP NADP ADP NADPH NAD- NADH ATP pyruvate glucose ATP chloroplast mitochondria Krebs glycolysis 02 CO2 H2O electron Calvin cycle cycle transport chain​

When is your breathing likely to speed up? a. when your white blood cells increase b. when your cells need more energy c. when your heart cells need more carbon dioxide d. when your blood cells have too much oxygen