Regarding the fundamental concepts of cellular respiration, which of the following statements are accurate?
a. All living organisms need energy, which is obtained by the oxidation of macromolecules called ‘food’.
b. In green plants, food is translocated from green parts to all non-green parts for oxidation.
c. The breakdown of complex molecules to yield energy takes place in the cytoplasm and mitochondria in eukaryotes.
d. The breaking of C-C bonds of complex compounds through oxidation within the cells is called respiration.
e. Proteins, fats, and organic acids can be used as respiratory substrates under certain conditions.
f. All the energy contained in respiratory substrates is released free into the cell in a single step.
g. ATP acts as the energy currency of the cell.
