Compare \beta -oxidation to the TCA cycle. Which of the following statements is true? Group of answer choices \beta -oxidation generates more ATP per cycle than the TCA cycle. Both processes directly involve the use of oxygen as a reactant. The TCA cycle is the primary pathway for the oxidation of fatty acids. Both processes involve the generation of acetyl-CoA as an intermediate.
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- β-oxidation is the process by which fatty acids are broken down to produce energy. It occurs in the mitochondrial matrix and involves the sequential removal of two-carbon units in the form of acetyl-CoA. - The TCA (tricarboxylic acid) cycle, also known as the Show more…
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7. Beta-oxidation of fatty acids is far more efficient than glycolysis because: regeneration of pyruvate via the malate shuttle. produces half as much lactate. doesn't require oxygen at all. it only requires ATP activation once for each chain.
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TCA cycle is used to completely oxidize acetyl-CoA, which can be generated by metabolizing sugar, fat, and protein. TCA cycle is considered as part the pathway that is responsible for aerobic oxidation of glucose. 3a) It has been discovered that obligate anaerobic organisms (they die when they are exposed to normal atmospheric concentrations of oxygen) actually have almost the complete set of TCA enzymes. Why do obligate anaerobic organisms need TCA enzymes? 3b) In obligate anaerobic organisms, the TCA cycle is often incomplete. Which TCA enzyme(s) are missing in the anaerobic organisms? 3c) In obligate anaerobic organisms, some of the TCA enzymes catalyze the reverse reactions of those used in TCA cycle. Please provide an explanation why the reactions are in different the reverse direction. 3d) Glyoxylate cycle is linked to TCA cycle. What enzymes are present in the glyoxylate cycle but not the TCA cycle? 3e) What is the biological function of the glyoxylate cycle? 3f) High-energy thioester bond is used to synthesize high energy Pi-containing compounds, that eventually lead to the formation of ATP or other GTP molecules. Please name two such enzymes.
Describe how reactions in the beta-oxidation of fatty acids resemble steps within the citric acid cycle. Compare and contrast how these steps in each process (CAC vs β-oxidation) are similar or different. Think about both specific differences and big picture (benefit to the organism, etc.) differences if possible.
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