Oxidative phosphorylation requires a supply of NADH (or other source of electrons at high potential), O2, ADP, and Pi. The rate of oxygen consumption by mitochondria increases markedly when ADP is added and then returns to its initial value when the added ADP has been converted into ATP (Figure 18.42).
Q. How much ATP is produced by oxidative phosphorylation?
Oxidative phosphorylation produces 24–28 ATP molecules from the Kreb’s cycle from one molecule of glucose converted into pyruvate. Two theoretical approaches applied to the oxidative phosphorylation are metabolic control analysis and nonequilibrium thermodynamics.
Table of Contents
- Q. How much ATP is produced by oxidative phosphorylation?
- Q. Where does oxidative phosphorylation occur?
- Q. At what stage does oxidative phosphorylation occur in glycolysis?
- Q. Where does oxidative phosphorylation occur in prokaryotes?
- Q. Where does the electron transport chain occur in prokaryotes?
- Q. Where does phosphorylation of proteins occur?
- Q. Why do organisms need both glucose and ATP?
Q. Where does oxidative phosphorylation occur?
Oxidative phosphorylation takes place in the inner mitochondrial membrane, in contrast with most of the reactions of the citric acid cycle and fatty acid oxidation, which take place in the matrix.
Q. At what stage does oxidative phosphorylation occur in glycolysis?
5; in Glycolysis, Fermentation and the Citric Acid Cycle tutorial). The majority of energy, at this point, is stored in the reduced electron carriers NADH and FADH2. They will be used in the final stage of cellular respiration, namely oxidative phosphorylation, which occurs in mitochondria.
Q. Where does oxidative phosphorylation occur in prokaryotes?
plasma membrane
Q. Where does the electron transport chain occur in prokaryotes?
cell plasma membrane
Q. Where does phosphorylation of proteins occur?
While phosphorylation is a prevalent post-translational modification (PTM) for regulating protein function, it only occurs at the side chains of three amino acids, serine, threonine and tyrosine, in eukaryotic cells.
Q. Why do organisms need both glucose and ATP?
Why Organisms Need Both Glucose and ATP Glucose is also more stable than ATP. Therefore, glucose is better for storing and transporting energy. However, glucose is too powerful for cells to use. ATP, on the other hand, contains just the right amount of energy to power life processes within cells.
