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- An image of the electron transport chain is shown below. Which of the following statements about the electron transport chain is true? Choose the best answer. Protein complex of electron carriers H+ NADH (carrying electrons from food) Copyright © 2018 Pearson Canada Inc. NAD+ H+ III FADH₂ FAD Cyt c IV 2 H+ + 1/2O₂ 1 Electron transport chain H+ H₂O All of the other options are correct. Electrons have higher free energy when present in ubiquinone (shown as Q) than they do when they are present in cytochrome c (shown as Cyt c). The transport of protons from the mitochondrial matrix to the intermembrane space occurs by facilitated diffusion. Complex I and cytochrome c (shown as Cyt c) are peripheral membrane proteins.Explain from a chemical stand point why ATP has a high phosphoryl-transfer potential. Make sure to compare ATP with its hydrolysis products, ADP and inorganic phosphate.A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction ATP(aq)+H2O(l)⟶ADP(aq)+HPO2−4(aq)ATP(aq)+H2O(l)⟶ADP(aq)+HPO42−(aq) for which Δ?∘rxn=−30.5 kJ/molΔGrxn∘=−30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of Δ?rxnΔGrxn in a biological cell in which [ATP]=5.0 mM,[ATP]=5.0 mM, [ADP]=0.10 mM,[ADP]=0.10 mM, and [HPO2−4]=5.0 mM.[HPO42−]=5.0 mM. Δ?rxn=ΔGrxn= kJ/mol
- Which of the following is incorrect about the chymotrypsin mechanism? a. The (-) charge of oxygen in the transition state is stabilized by the oxyanion hole Ob. Asp does not act as a nucleophile Oc. After H₂O had a proton removed, the OH acts as a nucleophile Od. When His removes a proton from H₂O, it is acting as an acidConsider the following metabolic pathway and answer the questions. CHOPO, CHOPO, H-C-OH CHOH он OH HO-C-H H-C-OH H-C-OH H-C-OH H -OH a. Give the two principal metabolic functions of this pathway CHO CHOH H--OH b. Write the number of the reaction HO-C H--OH CHOPO, that is an oxidative decarboxylation. H-C-OH c dentify the products of reaction 8 by name or by structure. CH,OH HO-H d. Identify a reaction that uses CHO thiamine pyrophosphate as a cofactor H-C-OH H-C-OH H-C-OH e Identify a reaction that involves the hydrolysis of an ester. H -OH CHOPO CHO CHOH H-C-CH -OH Name the products of reaction 6. HO-C-H H-C-OH H-C-OH CHOPOA fasting animal is fed palmitic acid that has a 14C-labeled carboxyl group. After allowing sufficient time for fatty acid breakdown and resynthesis to palmitic acid the 14C label can be found in the molecule (the methyl carbon is carbon 16) at: Multiple answers:Multiple answers are accepted for this question Select one or more answers and submit. For keyboard navigation...SHOW MORE a Carbon-15 b Carbon-13 c Carbon-11 d Carbon-9 e Carbon-7 f Carbon-5 g Carbon-3 h Carbon-16 i CO2 i think its c but not sure c or h please help
- Show how to bring about the following chemical transformation. This transformation might require one or several steps. CH3 O O CH3 OH CH3 OH CH3 OH K CH3 OH CH3 OH H3PO4 heat H3PO4 heat H₂O/H₂SO4 H3PO4 heat CH3 CH3 H₂O/H₂SO4 H₂ Pt CH3 H3PO4 heat CH₂ H₂O/H₂SO4 CH3 CH3 CH3 CH3Carboxypeptidase A, an enzyme that catalyzes hydrolysis of a proteins uses Zn2+. The mineral Zn2+sits in the active site of the Carboxypeptidase A enzyme. The Zn2+ facilitates the reaction of the enzyme and is required to be present for the reaction to occur. Select the best answer. Question 28 options: Zn2+ is an example of allosteric inhibition. Zn2+ is an example of a product. Zn2+ is an example of a noncompetitive inhibitor. Zn2+ is an example of a cofactor Zn2+ is an example of a competitive inhibitor.Which of the following correctly describes the linkages found in ATP? two anhydrides, a phospho ester and a glycosidic bond two anhydrides, two phospho esters and a glycosidic bond three anhydrides, a phospho ester and a glycosidic bond one anhydride, two esters and a glycosidic bond
- A medical student was studying the effect of glucose oxidase on glucose and fructose metabolism. He noticed the affect only with the glucose and no effect with fructose. Which ONE of the following property would explain his Indings? DStereo or optical specificity OBond specificity OAbsolute specificity OReaction specificity Group specificityWhich reaction is most likely to have a positive value for ∆G? Synthesis of a polymer from monomers Hydrolysis of ATP Ã ADP Payoff phase of glycolysis Diffusion of ions from high to low concentrationStearic acid is an 18-carbon fatty acid. If a single molecular of stearic acid is within the cytosol of the cells: Describe the process by which stearic acid would be metabolised, beginning the molecule in the cytosol of the cell, ending with the creation of ATP, and assuming the cell has sufficient oxygen for all reactions to take place Showing all working, calculate how many ATP molecules could be generated from a single molecule of stearic acid in the cytosol of the cell