The reaction that commits glucose to glycolysis is the isomerization glucose-6-phosphate to fructose-6-phosphate O the phosphorylation of glucose O the phosphorylation of fructose-6-phosphate the breakdown of glycogen some step between the conversion of fructose-1,6sphosphate to pyruvate
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A: Ans- Pyruvate
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- Question 1: The 4 kinase steps in glycolysis are catalyzed by hexokinase, phosphofructokinase, phosphoglycerate kinase, and pyruvate kinase. Write each of these four reactions, including all participants. i. ii. iii. iv.Question:- 1.) If 2 molecules of glucose enters glycolysis, a total of how many carbon dioxide molecules are released after Krebs Cycle including those released during pyruvate processing?Question 29 options: If 6 molecules of acetyl CoA were completely oxidized by the CAC, how many molecules of FADH2 would be produced?
- Question 1. Put away your notes and text and draw the complete Calvin-Benson cycle starting from 3molecules of Ru1,5BP. Show stoichiometry along the way using 6 GAP molecules to regeneratethe 3 Ru1,5BPs. Label each reaction according to its enzyme class (your choices arecarboxylase, kinase, dehydrogenase, aldolase, epimerase, isomerase, phosphatase, andtransketolase – see the posted enzyme guide for help on this).Question:- The proton motive force generated in mitochondrial electron transport is NOT used for which of the following? ExplainA. Transport of ATP into the cytosol from the matrixB. Transport of ADP from the cytosol into the matrixC. Transport of phosphate ions from the cytosol into the matrixD. Transport of H+ into the matrixE. Transport of NADH from the cytosol into the matrix. This was my answer and it was counted wrong: (c). PMF helps in chemisoosmosis of ions like H(+), ATP, NADPH, ADP etc., but they do not allow the transfer of phosphate across the mitochondria membrane..QUESTION 2An isocitrate dehydrogenase assay was performed on the enzyme sample and found to give an absorbance change at 340nm of 0.5 absorbance units perminute. Given that the molar absorption coefficient (E) is 6220 M-1 cm-1 and the pathlength is 1cm, what is the rate of the enzyme catalysed reaction in umol perminute per mL?
- Question 9 - Under anaerobic conditions in the muscle, lactate dehydrogenase catalyzes the reaction converting pyruvate to lactate. What is the metabolic reason for this fermentation reaction? It is necessary to reduce pyruvate before it can be converted to acetyl-CoA and enter the citric acid cycle in muscle. NAD* must be replenished for glycolysis to continue. The reaction creates NADH which can produce additional energy in the electron transport chain. O Lactate is more oxidized than pyruvate.QUESTION 22 When the final product of a series of enzymatically-catalyzed reactions binds to the first enzyme in the pathway to limit its production, it generally uses ___ because the structure of this final product is generally not similar to that of any of the enzyme's normal substrates. Allosteric activation Zymogen activation Covalent modification Competitive inhibition Allosteric inhibitionQuestion:- Two enzymes, acetate kinase and phosphotransacetylase, convert acetate [CH3C(O)O–] and ATP to acetyl phosphate and ADP (acetate kinase reaction) then acetyl phosphate and CoASH (coenzyme A) into acetyl-CoA and inorganic phosphate (Pi ; phosphotransacetylase reaction). What is the ΔG°' for the synthesis of acetyl-CoA from acetate, CoASH, and ATP by this enzyme pair?
- QUESTION: In glycolysis one glucose ( a 6 carbon molecule) is broken down into 2 pyruvate molecules ( each 3 carbon molecules). this process occurs in two separate reactions. A particular toxin, charchuin, found in poison slugs, targets one of these reactions and renders the carbons in that particular pyruvate radioactive and thus, unstable. Predict how Charchuin would impact the amount of products produced in the Krebs cycle. provide reasoning to support your response.Additional information: ATP production by the ETC and ATP Synthase per glucose varies somewhat depending on the energy required to move NADH into the mitochondria and other energy uses for the hydrogen-ion gradient. Additional questions: 1.) How many ATP's are generally yielded by oxidative phosphorylation from the catabolism of one glucose? 2.) Summarize the total ATP's obtained from a single molecule of glucose, from start to finish? asapQuestion:- ATP is an important source of energy for muscle contraction. Pyruvate dehydrogenase phosphate phosphatase is activated by calcium, which increases greatly in concentration during exercise. Why is activation of the phosphatase consistent with the metabolic requirements of muscle during contraction?