The citric acid cycle (including the transition step or pyru…
The citric acid cycle (including the transition step or pyruvate oxidation) is essential for cellular respiration, processing pyruvate to produce energy intermediates. By the end of the cycle: Explain the fate of the carbons that entered the cycle as part of pyruvate. Identify which molecules now carry the stored energy originally present pyruvate. Describe how electrons are captured during the cycle and where they are sent after the cycle concludes.
Read DetailsOxidative phosphorylation is a defining reaction of cellular…
Oxidative phosphorylation is a defining reaction of cellular respiration. Briefly summarize OxPhos. Be sure to describe the role of oxidation in this process and the molecules that are being oxidized. Discuss the role of phosphorylation in this process and the molecules that are being phosphorylated. Finally, discuss the importance of O2. Answers should demonstrate an understanding of the cytochromes, enzymes, reactants/substrates, and membranes involved in the process. The compound 2,4 dinitrophenol (DNP) is capable of making mitochondrial membranes permeable to protons. Biochemists refer to it as an “uncoupler”. Would ETC and chemiosmosis still happen in cells treated with DNP? Your answer should explain which reaction(s) would still continue, and which reaction(s) would no longer work when cells are exposed to DNP.
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