Under anaerobic conditions, following the radiolabel at carbon-2 of pyruvate, in which molecule does the carbon label ultimately end up so that it can be taken up by the muscle cell and used for metabolism? Lactate C-2 Glucose C-2 and C-5 Acetyl- CoA C-2 Glucose C-1 and C-6 CO2 Pyruvate C-2
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Under anaerobic conditions, following the radiolabel at carbon-2 of pyruvate, in which molecule does the carbon label ultimately end up so that it can be taken up by the muscle cell and used for
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- Which one of the following pairs of compounds are joined together to conserve carbon in the glyoxylate cycle? Acetyl-CoA + Glyoxylate Oxaloacetate + Malate CO2 + CO2 Pyruvate + CO2 Ribulose-1,5-Bisphosphate + CO2 O O O O CPlace the following molecules in the order in which they appear during aerobic respiration: Citrate G3P Glucose-6-phosphate Pyruvate Fructose-1,6-bisphosphate 1,3-bisphosphoglycerate 3-phosphoglycerate Glucose Acetyl-CoAIn which of the following metabolic conversions is ATP “generated” during glycolysis? Phosphoenolpyruvate -> pyruvate 2-Phosphoglycerate —> Phosphoenolpyruvate Glucose-6-phosphate —> Fructose-6-phosphate Fructose-1,6-bisphosphate —> Dihydroxyacetone phosphate + Glyceraldehyde-3-phosphate Fructose-6-phosphate —> Fructose-1,6-bisphosphate
- Pyruvate can be converted into two different products depending on whether oxygen is readily available or not. Under conditions of strenuous activity (anaerobic) the product is: аcetyl CoA pyruvate lactate CO2In addition to L-lactate, which of the following molecules is (are) generated by fermentation of pyruvate in mammalian muscle? Group of answer choices CO2 NAD+ Ethanol ATP GlycerolOnce formed, what are the three possible fates of pyruvate and under what conditions do they occur? Match the appropriate pairs. Clear All pyruvate forms lactate pyruvate forms ethanol pyruvate forms acetyl-CoA under anaerobic conditions in animals under aerobic conditions under anaerobic conditions in yeast and other microorganisms
- asapWhich of the following products of the non-oxidative stage of PPP is an intermediate in the glycolysis pathway? Group of answer choices Glyceraldehyde-3-phosphate Xylulose-5-phosphate Erythrose-4-phosphate Ribose-5-phosphateIn which of the following metabolic conversions is ATP “generated” during glycolysis? Glucose —> Glucose-6-phosphate 1,3-Bisphosphoglycerate —> 3-Phosphoglycerate Fructose-1,6-bisphosphate —> Dihydroxyacetone phosphate + Glyceraldehyde-3-phosphate Glucose-6-phosphate —> Fructose-6-phosphate 2-Phosphoglycerate —> 3-Phosphoglycerate
- Starting with lactate, explain how phosphoenolpyruvate is produced. Include reactions of essential enzymes such as pyruvate carboxylase, and phosphoenolpyruvate carboxykinase. Explain the sites of action of these enzymes.The coenzyme NAD+ is required for which glycolytic reaction shown below? Oglyceraldehyde-3-P→ 1,3-bisphosphoglycerate glucose glucose-6-P fructose-6-P→ fructose-1,6-BP 2-phosphoglycerate → phosphoenolpyruvatePyruvate is an important intermediate in carbohydrate metabolism. Which of the following is true regarding the fate of pyruvate in muscle cells? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. Pyruvate will be oxidized to acetyl-CoA in the presence or absence a of oxygen. Pyruvate will be oxidized to acetyl-CoA in the absence of oxygen or reduced to lactate in the presence of oxygen. Pyruvate will be oxidized to acetyl-CoA in the presence of oxygen or reduced to lactate in the absence of oxygen. Pyruvate will be reduced to acetyl-CoA in the absence of oxygen or oxidized to lactate in the presence of oxygen. Pyruvate will be reduced to acetyl-CoA in the presence of oxygen or oxidized to lactate in the absence of oxygen. e