About the Election Transport Comparison.

So my Teacher sent me this e-mail to help me better study for an up coming test next week. I get most of the process but I get confused when reduced NAD is in instead of reduced FAD. Here is the e-mail she sent me:

The electron transport chain of the mitochondrion passes electrons from
__________________ and __________________ to proteins within the transport
chain. The energy thus derived is used to pump __________________ across an
__________________ membrane. Energy, in the form of __________________ is
generated when the __________________ are allowed to flow__________________
their concentration gradient.
The chloroplast electron transport chain differs from the mitochondrial
electron transport chain in several ways. In the mitochondrion, carrier
molecules provide the energy to power the chain. At the end of the
mitochondrial electron transport chain, the electrons and protons are combined
with
__________________ to make __________________ .
In the chloroplast __________________ provides the energy to excite the
electrons. The electrons that are lost from the antennal complexes are replaced
by splitting __________________ . In addition, the chloroplast has two modes of
energy generation, cyclic and non-cyclic photophosphorylation. In cyclic
photophosphorylation, only __________________ is produced. In non-cyclic
photophosphorylation _________________, __________________ and
__________________ are produced.
Generally, plants can meet most of their energy needs by producing
__________________ alone. In times of abundance, however, plants use some of
their excess energy to produce __________________ . This process is very
inefficient because the fixation of carbon dioxide is __________________ .

Below are clues on what we can fill in the blanks with but I'm stuck just after "Energy, is the form of -________ is generated when the ____________ are allowed to flow ____________ their concentration gradient."