Section 17 fill-in-the-blank

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Section 17 fill-in-the-blank 0.5 pts ea

• During stage III of cell respiration, reduced
  coenzymes are produced during the metabolic
  pathway known as Krebs cycle, which takes place
  in the matrix of the mitochondrion. During stage
  IV, a proton gradient is established across a
  membrane due to flow of electrons from 1 complex
  to next, with final oxidizing agent being O2.
  This gradient is dissipated during chemi-osmosis,
  which is the diffusion of protons through ATP
  synthase, making ATP.

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• In chloroplasts, the process is similar, except
  that the original source of electrons is H2O, and
  the final oxidizing agent in non-cyclic
  photophos-phorylation is NADP. The
  light-independent reaction, or Calvin cycle takes
  place in the stroma of chloroplasts. In C3
  plants, such chloroplasts would be conducting
  this cycle in mesophyll cells in C4 plants it
  would be done in bundle sheath cells. CAM plants,
  such as cactuses and bromeliads carry out the
  light and light-indepen-dent reaction at (during)
  daytime and fix CO2 at night. In these plants,
  the 1st stable product of fixation is 4-C
  compounds. The enzyme which carboxylates RuBP in
  these plants is RUBISCO.