Why do you think glutathione occurs in a concentration as high as glucose? 2.Explain why glutathione must be transported from cytosol to mitochondria. 3.Explain why glutathione can confer therapeutic benefit when taken orally.
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1.Why do you think glutathione occurs in a concentration as high as glucose?
2.Explain why glutathione must be transported from cytosol to mitochondria.
3.Explain why glutathione can confer therapeutic benefit when taken orally.
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- 1. Select the INCORRECT statement about Glutamate dehydrogenase : a. Catalyzes the removal of NH4+ into glutamate b.Catalyzes the incorporation of NH*4 into a-ketoglutarate c. Catalyzes the removal of NH*4 from glutamate C d. Catalyzes the incorporation of NH'4 into a-keto acid1. Explain the reaction mechanism involved how glucogenic amino acids can yield either a pyruvic acid or an oxaloacetic acid. In what pathway will pyruvic or oxaloacetic acid be used and why is this pathway important? 2. Discuss the reaction mechanism involved how the -NH2 groups of amino acids are being metabolized. 3. Explain why gluconeogenesis under conditions of starvation or diabetes breaks down body proteins. Complete answer please. Thank you. |1. Write the over all equation of formation of one palmitate molecule via condensation, reduction, dehydration, and reduction reactions.. Single line text. 2. Write the overall equation for the transfer of one acetyl group from the mitochondrion to the cytosol.. Single line text.
- 2A. Red blood cells synthesize and degrade 2,3-bisphosphoglycerate (2,3-BPG) by a detour of the glycolytic pathway, as shown below: glyeeraldehyde 3-phosphate GAP dehydrogenase 1,3-bisphosphoglycerate bisphosphoglycerate mutase ADP phosphoglycerate kinase 2,3-bisphosphoglycerate ATP 3-phosphoglycerate 2,3-bisphosphoglycerate phosphatase phosphoglycerate mutase 2-phosphoglycerate (i) The bisphosphoglycerate mutase/2,3-bisphosphoglcerate phosphatase reaction is catalyzed by a single enzyme, BPGM. At alkaline pH, BPGM favors the mutase activity while at lower pH, BPGM favors the phosphatase reaction. Use this information, along with the Bohr effect, to explain in the space below how red blood cells respond to a metabolic defect where a patient experiences chronic, elevated levels of lactic acid. I (ii) Individuals with red blood cell phosphoglycerate kinase deficiency suffer from moderate hemolytic anemia (a condition where red blood cells self-destruct before their normal lifespan). They…6. In an experiment, students used liver tissuc samples to study the cthanol metabolism and the possibility of ethanol conversion into glucose. The ethanol introduction in the investigated medium didn't lead to glucose level increase. Why is it impossible to convert ethanol to glucose? For the answer: a) provide a scheme of gluconcogenesis, indicate the substrates of this process; b) write the reaction of ethanol oxidation in the liver; c) explain whether it is possible to use the metabolites of ethanol catabolism for the glucose synthesis.Which statement on the biosynthesis of cannabinoids is NOT TRUE? Select one: O a. Geranyl pyrophosphate is formed as a precursor via the deoxyxylulose pathway in cannabis O b. Divarinic acid is the precursor for the production of propyl cannabinoid acids. O C. When prenyl-transferase enzyme uses olivetolic acid as substrate cannabigerivarinic acid (CBGVA) is formed. O d. THCA-synthase, CBDA-synthase, and CBC- synthase enzymes can use both CBGA and GBGVA as substrate.
- 1. Prostaglandins are a class of eicosanoids, fatty acid derivatives with a variety of extremely potent actions on vertebrate tissues. They are responsible for producing fever and inflammation and its associated pain. Prostaglandins are derived from the 20- carbon fatty acid arachidonic acid in a reaction catalyzed by the enzyme prostaglandin endoperoxide synthase. This enzyme, a cyclooxygenase, uses oxygen to convert arachidonic acid to PGG2, the immediate precursor of many different prostaglandins. (a) The kinetic data given below are for the reaction catalyzed by prostaglandin endoperoxide synthase. Focusing here on the first two columns, determine the Vmax and Km of the enzyme. (b) Ibuprofen is an inhibitor of prostaglandin endoperoxide synthase. By inhibiting the synthesis of prostaglandins, ibuprofen reduces inflammation and pain. Using the data in the first and third columns of the table, determine the type of inhibition that ibuprofen exerts on prostaglandin endoperoxide…What mechanism of action does Ciprofloxacin belong in? 1.inhibition of cell wall synthesis 2.inhibition of nucleic acid synthesis 3.inhibition of metabolic pathway 4.inhibition of protein synthesis5. Treatment of the patients with familial hypercholesterolemia by statins (pravastatin, for instants) allows to decrease cholesterol levels in blood up to the normal range. Explain the statin action on the cholesterol metabolism. For that: a) draw the scheme of the cholesterol synthesis, indicate the key enzyme of the pathway; b) name all mechanisms of the key enzyme regulation and statin's action; c) describe the structure of LDL receptor and its function in cholesterol metabolism; d) explain the cause of familial hypercholesterolemia and the symptoms of the disease.
- 6. The five steps involved in conversion of pyruvate to acetyl-CoA are listed below. For each step, list the enzyme(s) that are involved. 1. Decarboxylate pyruvate 2. Reduction of lipoic acid 3. Transfer of acetyl group to coenzyme A 4. Reoxidation of lipoic acid 5. Reoxidation of FADH2 → FADH8. Glucose labeled with 14 C at C-1 is added to a solution containing the enzymes and cofactors of the oxidative phase of the pentose phosphate pathway (aka hexose monophosphate pathway) which compounds will contain radioactive carbon? - Ribulose 5 phosphate, no label will be found, all compounds will be labeled, erythrose 4- phosphate, 7-[hps[hpsedoheptulose, fructose 6- phosphate, grlyceraldehyde 3-phosphate, xylulose 5 phosphate ribose 5 phosphate8. In patients with diabetes mellitus type 1, the biochemical disorders result from changes in fuel metabolism. One of these signs is acidosis, Explain why such patients have a deviation of blood pH from the norm? For this 9. b) write the reactions of synthesis and oxidation of these molecules, name the enzymes, coenzymes, reaction localization: X