If metabolites from fats, amino acids and lactate are to be converted to glucose, which of the following is a common metabolic precursor? oxaloacetate acetyl CoA alpha-ketoglutarate
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- Which of the following reactions correspond to the decarboxylation step during ketone body formation? A. 2 acetyl-CoA → acetoacetyl-CoA B. ß-hydroxybutarate → acetoacetate C. Acetoacetate → acetone D. HMG-CoA → mevalonateAcetyl-CoA and succinyl-CoA are both highenergy thioesters, but their chemical energy is put to differentuses. Elaborate.Which of the following enzymes catalyze a reaction where a ketone is converted to an acid? Alpha-ketoglutarate dehydrogenase Glyceraldehyde 3-phosphate dehydrogenase Pyruvate decarboxylase Fumarase Hexokinase
- Which of the following statements is TRUE about fatty acid biosynthesis? Group of answer choices: NADH is used as the reducing equivalent in the process. Malonyl ACP is the donor of the acetyl group. The product detaches from the fatty acid synthase complex when the chain length is usually 18 carbons. Oxaloacetate carries acetyl CoA to the cytosol.Will an amino acid be glucogenic or ketogenic if it is catabolized to the following molecules?(a) Phosphoenolpyruvate(b) -Ketoglutarate (c) Succinyl-CoA(d) Acetyl-CoA(e) Oxaloacetate(f) AcetoacetateWhat enzymes catalyzes causes a reaction where a ketone is converted to alcohol? Glyderaldehyde 3-phosphate dehdrogenase Fumarase Heokinase Alpha-ketogltarate dehydrogenase Triose phosphate isomerase
- Which of the following enzyme components of fatty acid synthase has/have a thiol group? A. ketoacyl-ACP reductase B. ketoacyl-ACP synthase C. enoyl- ACP reductase D. acyl carrier proteinWhich of the following statements is TRUE about cholesterol biosynthesis? Group of answer choices HMG-CoA lyase catalyzes the committed step. Cholesterol is composed of 30 carbon atoms. NADH is needed to form mevalonate. Six molecules of isopentyl pyrophosphate condense to form squalene.Which of the following condenses with oxaloacetate to form citrate? A) carboxybiotin B) cis-aconitate C) acetyl-CoA D) oxalosuccinate E) succinyl-phosphate
- Which of the given metabolites is common in respiration mediated breakdown of fat and protein? a.Dihydroxyacetone phosphate b.Glyceraldehyde 3 phosphate c.Acetyl CoA d.Phosphoenol pyruvateMany components of the glycolytic pathway and the citricacid cycle are direct exit or entry points to metabolic pathways ofother substances. Indicate another pathway available to the following compounds:(a) Fructose-6-phosphate(b) Oxaloacetate(c) Glucose-6-phosphate(d) Acetyl-CoA(e) Glyceraldehyde-3-phosphate(f) -Ketoglutarate(g) Dihydroxyacetone phosphate(h) Succinyl-CoA(i) 3-Phosphoglycerate(j) Fumarate(k) Phosphoenolpyruvate(l) Citrate(m) PyruvateWhich of the following metabolic processes directly involve Acetyl Coa (both as an immediate reactant or a product)? (Select all that apply) PDH Gluconeogenesis Electron Transport Chain Krebs Cycle FA synthesis Glycolysis Pentose Phosphate Pathway FA breakdown