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- Question 4 If 32p – labeled (radioactive phosphate) inorganic phosphate were introduced to erythrocytes undergoing glycolysis which of the following molecules would you expect to detect 32 p in Glycolytic intermediates? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Fructose 1-6 bisphosphate b 3-Phosphoglyceraldehyde Dihydroxyacetone phosphate d 2-Phosphoglycerate e 1-3 bisphosphoglycerate f Phosphoenolpyruvate 3-Phosphoglycerate h Pyruvate i None of the aboveQuestion 9: For the reaction catalyzed by the enzyme hexokinase, Glucose + ATP = glucose 6-phosphate + ADP, the equilibrium constant is 7.8 x 10² at 298 K. Please answer the following independent questions. A. Determine the standard Gibbs free energy of the reaction. B. In dying E. coli cells, the concentrations of metabolites were found to be: [ATP] = 0.5 mM, [ADP] = 100 mM, [glucose] =0.1 mM, and [glucose 6-phosphate] = 2 mM ay 298 K. Does the reaction proceed spontaneously? C. What would be the ATP:ADP ratio at equilibrium at 37 C if the concentration of glucose is 100- fold less than that of glucose-6-phosphate? The standard enthalpy of this reaction at 298 K is - 23.8 kJ/mol.Question 11 Observe the titration curve below and choose the CORRECT statement. 12 - pK2 10 8- PK, 2. 0.5 1.0 1.5 Equivalents of OHO 2.0 O Two of these are correct O At point A, both acidic groups are protonated O At point A, both acidic groups are deprotonated O Cis the end point of titration for the most acidic group O B is the end point of titration for the most acidic group « Previous N. LG rotein d (basic)Rgoup Jacidic) Rgroup ged Rgroup
- Partial Question 9 0.33 /1 pts Consider the following reaction: CH,OPO CH,OPO CH-OPO ATP ADP CH-OH н но Н но phosphofructokinase-1 (PPK-1) H 13 ÓH H ÒH H Fructose 6-phosphate Fructose 1,6-bisphosphate Which of the following statements about this reaction is (are) correct? Mark all that apply Is part of the Krebs cycle. Is part of the destabilzation reactions of glycolysis. Transters energy from fructose to ATP. 2 Transfers energy from ATP to fructose.Question 1: The overall process enabled by the glyoxylate cycle is: (2acetyl-CoA) + (NAD+) + (2H2O) → (succinate) + (2CoA) + (NADH) + (2H+) Dissect this process further by writing down all of the reactions that are actually involved in making one succinate from two acetyl-CoA units. Show chemical structure for all intermediates.Question 4 In the citric acid cycle, succinate is oxidized to fumarate with the help of FAD. Using the information posted below, answer the following questions: a) Write a balanced equation for the reaction. b) Calculate the cell potential, Eº'. c) Calculate change in Gibbs free energy, AGO', and the equilibrium constant, K, for the reaction at 25 °C. d) Is the conversion of succinate to fumarate a spontaneous reaction? Justify your answer. System Eo' (V) FAD + 2H* + 2e¯→ FADH2 - 0.219 fumarate + 2H* + 2e¯ → succinate 0.031 R = 8.314 J K·1 mol·1; F= 9.649 × 104 C mol·1
- Question 15 gal(a1-6)gal(a1-6)glc(a1-2B)fru. Which of the complete IUPAC of this tetrasaccharide? a-D-galactopyranosyl-(1–6)- a-D-galactopyranosyl-(1-6)- a-D-glucopyranosyl-(1-2)-B-fructofuranose a-D-galactopyranosyl-(1-6)- a-D-galactopyranosyl-(1-6)- a-D-glucopyranosyl-(1-2)-B-fructofuranoside O a-D-galactopyranosyl-(1-6)-B-D-galactopyranosyl-(1–6)- a-D-glucopyranosyl-(1-2)-8-fructofuranoside O a-D-galactopyranosyl-(1-6)-B-D-galactopyranosyl-(1–6)- a-D-glucopyranosyl-(1-2)-8-fructofuranoseQUESTION 12 What chemical species does chymotrypsin stabilize the most during the course of the reaction? OA. the transition state O B. the substrate OC. the product(s) OD. the ES complex CE. the tetrahedral intermediateQuestion:- 2) oxaloacetate (OAA) occurs as an important intermediate in 2 metabolic processes a) indicate these reaction steps where OAA occurs b) indicate structure for OAA 3) how many reduced equivalents (as electron carrier) are obtained after an oxidation of C16H12O2? describe in detail the structure of these steps.
- Question 5 of 40 Side-by-Side Identify the charge states for aspartic acid (Asp), leucine (Leu) and Lysine (Lys) at pH 1, 7 and 12. Then calculate the isoelectric point (pI). Step 7: Determine the appropriate calculation for the pl of lysine. For lysine, the pKa of the amine is 8.95, while the pKa of the carboxylic acid is 2.18 and the pK, of the amine in the Strategy: First identify the sidechain on each amino acid. Then determine whether the side chain is acidic, basic or side chain is 10.53. neutral. Determine whether each functional group is Calculate the pI of lysine. charged or not at the pH indicated. Calculate the (pI) from the pKa values of the functional groups. pI MacBook ProQuestion 20 due to: The optical activity of oses is A| No answer is right B The carbonyl function C The reducing power D The secondary alcohol E The primary alcoholQUESTION 34 Bonus: In the graph shown below which of the following statements is TRUE concerning the "plateau" region of the curve? Reaction welocity v Substrate concentration. IS) O both (a) and (c) All the available substrate has been converted to product The enzyme is in the stressed state O The enzymes active site is saturated with enzyme O The enzyme becomes less active Click Save and Submit to save and submit. Click Save All Answers to save all answers.