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Unformatted text preview: The fluid-filled space surrounding the grana is the stroma . Many enzymes needed in photosynthesis are found embedded in the thylakoid membranes and in the stroma. Click here to view the chapter on photosynthesis The diagram below shows a chloroplast that has been cut lengthwise to reveal the interior. Cellular Respiration Cellular respiration refers to the chemical reactions that break down glucose to CO 2 and H 2 O, releasing the energy stored within its bonds. The energy is temporarily stored in the bonds of ATP (adenosine triphosphate). ADP + P i + energy ATP This process requires oxygen in aerobic organisms. Anaerobic organisms do not require oxygen, but produce much less ATP per glucose molecule. Aerobic cellular respiration occurs in the mitochondria . Prokaryotes do not have mitochondria....
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