Muscle tissues make lactate from pyruvate in order to do which of the following? Speed up the rate of glycolysis Get rid of pyruvate produced by glycolysis Regenerate nad+ Utilize the energy in pyruvate Produce additional co2
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Muscle tissues make lactate from pyruvate in order to do which of the following?
- Speed up the rate of glycolysis
- Get rid of pyruvate produced by glycolysis
- Regenerate nad+
- Utilize the energy in pyruvate
- Produce additional co2
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- ATP for muscle contraction can be provided by ______. a. aerobic respiration b. lactate fermentation c. transfer of a phosphate from creatine phosphate d. all of the aboveLactate dehydrogenase (LDH) plays an essential role in an exercising muscle, especially when the level of excursion surpasses the ability of circulatory systems ability to supply adequate oxygen. What is the main reason LDH is so important to the muscle under these conditions? It produces one mole of ATP via substrate level phosphorylation. It resupplies NAD+ to glyceraldehyde 3-phosphate dehydrogenase. It decreases pH thus decreasing the dissociation rate of oxygen from hemoglobin It produces NADH for energy while converting pyruvate into lactate. It removes excess lactic acid from the muscle to create pyruvate. NextDuring aerobic respiration how many ATP molecules are produced by theoxidation of a single molecule of pyruvate?
- Pyruvate to Lactate number of ATPWhich Molecule Is Being Reduced In The Reation Pyruvate (C3H4O3) + NADH+H+ -> Lactate (C3H6O3)+NAD+Which of the following reactions/ pathways does NOT produce NADH? Payoff phase of glycolysis Oxidative deamination of glutamine β-oxidation of fatty acid Conversion of pyruvate to lactate Conversion of pyruvate to acetyl CoA
- What type of regulation would be expected when anaerobic metabolism is occurring in the muscle? Select all that apply. O Activation of pyruvate dehydrogenase kinase O Increased levels of calcium to activate pyruvate dehydrogenase phosphatase O Phosphorylation of pyruvate dehydrogenase O Inhibition of pyruvate dehydrogenase complex O Increased levels of NADH to activate citrate synthase O Increased levels of NADH to inhibit alpha-ketogluterate dehydrogenase complex O Increased levels of acetyl CoA to activate pyruvate carboxylase for gluconeogenesisHow is the malate shuttle used in the liver to increase the number of ATP generated from glycolysis? Contrast this with how NADH from glycolysis is dealt with in the muscle.Vigorous exercises pave to: * a decreased NADH/NAD+ ratio. all of the above a decreased concentration of AMP. decreased levels of fructose 2,6- bisphosphate. increased oxidation of pyruvate to CO2 and water. an increased conversion of pyruvate to lactate.
- The energetically-usable products of aerobic respiration are: O A diverse number of protein molecules O Up to 38 ATPS O Three unsaturated fatty acids O Six carbon dioxide molecules O Glucose molecules (the number depends on the amount of light available)Which of the following events occurs during the energy-payoff phase of glycolysis? One carbon of a pyruvate molecule is oxidized to carbon dioxide. Oxaloacetate receives a two-carbon acetyl group from acetyl coenzyme A to form citrate. Substrate-level phosphorylation Oxidative Phosphorylation In which stage of aerobic cellular respiration are FADH2 molecules produced? Pyruvate Oxidation Glycolysis Krebs Cycle Electron Transport Which of the following events does not occur during pyruvate processing (pyruvate oxidation)? One carbon atom of each pyruvate is oxidized to carbon dioxide. NAD+ coenzyme is reduced to NADH. The remaining two carbon atoms of pyruvate (acetyl unit) reacts with coenzyme A to produce acetyl CoA. FAD coenzyme receives two hydrogen atoms to produce FADH2.What is the process that sustains the redox balance of glycolysis under aerobic conditions? transport of lactate from the cell regeneration of NAD* in the citric acid cycle formation of NADH in the reaction of glyceraldehyde 3-phosphate dehydrogenase regeneration of NAD* in fermentation processes regeneration of NAD* in the mitochondrial electron-transport chain