true 18. ATP is a source of usable energy for the cells.
the bond between the 2nd and 3rd phosphate group is broken to release energy
true 19. ATP is made during photosynthesis.
in the light dependent reactions of the photosynthesis the hydrogen protons pumped in during the electron transport chain are used to synthesize ATP
true20. ATP is made during respiration.
during anaerobic resipiration and aerobic respiration ATP is produced
false21. ATP is a waste product of respiration and photosynthesis.
ATP is not a waste product, it plays an important role in photosyntheis, the main role of respiration is ATP production
true 22. Photosynthesis and respiration form a cycle.
since the reaction of photosynthesis is
6CO2+6H2O-->C6H12O6+6O2
and the reaction of respiration is
C6H12O6+6O2-->6CO2+6H20
you can see that the producs of photosynthesis are used in aerobic respiration and the products of aerobic respiration are used in photosynthesis so the two form a cycle