Which is co-produced from the conversion of fatty hydroxyacyl CoA to ketoacyl CoA? a. NADH b. FADH2 c. Acetyl COA d. ATP
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- Not all of the acetyl-CoA from the mitochondria is carboxylated to malonyl-CoA because some are used in the? a.ß-oxidation cycles b.production of ATP c.priming step of the fatty acid biosynthesis d.conversion to pyruvateThe sources of the three (3) carbons in malonyl-Coa is/are: a. 1 C from C02 and 2 C from acetyl-CoA b. 1 C from HCO3- and 2 C from acetyl-CoA c. 1 C from biotin and 2 C from acetyl-CoA d. All three C from acetyl-CoAMammals cannot undergo net synthesis of carbohydrate from acetyl-CoA, but the carbons of acetyl-CoA can be incorporated into glucose and amino acids. Present pathways by which this could come about.
- Which one of the following will function to inhibit CPT1? A.palmitoyl-CoA B.citrate C propionyl-CoA D.acetyl-CoA E malonyl-CoAThe rate-limiting step in fatty acid synthesis is: a. The reduction of the acetoacetyl group to a ?-hydroxybutyryl group b. Formation of malonyl-CoA from malonate and coenzyme A. c. Condensation of acetyl-CoA and malonyl-CoA. d. The reaction catalyzed by acetyl-CoA carboxylase.β-oxidation is inhibited by A. high acetyl-CoA levels B. low malonyl-CoA levels C. protein kinase A activity D. phosphorylation of acetyl-CoA carboxylase
- Consider the docosanoic acid, C21H43CO2H a. Label the a and B carbons b. Draw the acyl CoA derived from this fatty acid c. How many acetyl CoA molecules are formed by complete B-oxidation? d. How many cycles of B-oxidation are needed for complete oxidation? e. How many molecules of ATP are formed from the complete catabolism of this fatty acid?Explain why inhibiting the activity of acetyl-CoA carboxylase might not affect a person’s body mass.Order the steps that results in a triacylglycerol containing two palmitic acids and one stearic acid. a. Diacylglycerol reacts with an fatty-acyl-CoA b. Phosphate is remove from phosphatidic acid to form diacylglycerol c. Two of the fatty acyl-CoAs react with glycerol-3-phosphate d. An elongase produce stearic acid e. Stearoyl-CoA is synthesized…
- Which of the following statements about the "central role" of TCA is/are correct? a. Some metabolic intermediates of TCA are used as non-carbohydrate sources for gluconeogenesis. b. β-oxidation of lipids produces acetyl-CoA that can enter TCA. c. All metabolic intermediates in TCA are used in the biosynthesis of amino acids. d. Degraded amino acids are converted to metabolic intermediates of TCA, then to ketone bodies.The reaction of acetyl-CoA and oxaloacetate in the TCA cycle forms a. 5-carbon α-ketoglutarate b. 4-carbon Succinyl-CoA c. 6-carbon citrate d. 6-carbon α-ketoglutarate e. 4-carbon citrateWhich of the following reactions required dihydrolipoyl dehydrogenase? Oxidative decarboxylation of pyruvate Oxidative decarboxylation of a-ketoglutarate Both A and B Neither A nor B Fatty acid biosynthesis is stimulated by: Decreased levels of citrate Increased levels of palmitoyl-CoA Increased levels epinephrine Increased levels of AMP All of the above None of the above