About the Election Transport Comparison.

At the end you say 'below are cluues on what we can fill in the blanks with", but there are none.




The electron transport chain of the mitochondrion passes electrons from [NADH] and [FADH2] to proteins within the transport chain. The energy thus derived is used to pump [protons (or hydrogen ions, or H+: all the same thing] across an [inner mitochondrial] membrane. Energy, in the form of [ATP] is generated when the [protons] are allowed to flow [down] 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
[oxygen] to make [water].

In the chloroplast [solar radiation, or light, whatever she said in class] provides the energy to excite the electrons. The electrons that are lost from the antennal complexes are replaced by splitting [water]. In addition, the chloroplast has two modes of energy generation, cyclic and non-cyclic photophosphorylation. In cyclic photophosphorylation, only [ATP] is produced. In non-cyclic photophosphorylation [ATP], [NADPH] and [oxygen, molecular oxygen, or O2, whatever the teacher said] are produced.


Generally, plants can meet most of their energy needs by producing [ATP (??)] alone. In times of abundance, however, plants use some of their excess energy to produce [sugars, sucrose, or whatever your teach said]. This process is very inefficient because the fixation of carbon dioxide is [endergonic, energy requiring (??)].