Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Textbook Question
Chapter 24, Problem 34GQ
The first step of the
∆rGₒ'
Glucose + Pi → Glucose-6-phosphate + H2O
∆rGₒ' = +13.8 kJ/mol-rxn
This reaction is coupled to the hydrolysis of ATP
ATP + H2O → ADP + Pi ∆rGₒ' = -30.5 kJ/mol-rxn
What is the sum of these two equations and the value of ∆rGₒ' for the coupled reaction? Is the coupled reaction product-favored at equilibrium?
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Cells use the hydrolysis of adenosine triphosphate (ATP) as a source of energy. The conversion of ATP to ADP has a standard free-energy change of -30.5 kJ>mol. If all the free energy from the metabolism of glucose, C6H12O61s2 + 6 O21g2 ¡ 6 CO21g2 + 6 H2O1l2 goes into the conversion of ADP to ATP, how many moles of ATP can be produced for each mole of glucose?
In glycolysis, the reaction of glucose (Glu) to form glucose-6-phosphate (G6P) requires ATP to be present as described by the
following equation: Glu+ ATP→G6) + ADP AG° = - 17KJ
In this process, ATP becomes ADP summarized by the following equation: ATP→ ADP A G° =- 30 kJ
What is the standard free energy change for the following reaction: Glu →G6P AG° =?
A 17 k)
B) -13 k)
c) 13 kJ
-17 kJ
Use the following information corresponding to 1 Molar concentrations of reactants and products for Questions 7 -12.
Glycerol + ATP → ADP + 3-Phosphoglycerate:
ΔH = -63.39 kJ/mol and ΔS = -0.1255 kJ/molK.
Based on the information given above, Which of the following statements regarding this folding process are correct?
Use the following information corresponding to 1 Molar concentrations of reactants and products for Questions 7 -12.
Glycerol + ATP → ADP + 3-Phosphoglycerate:
ΔH = -63.39 kJ/mol and ΔS = -0.1255 kJ/molK.
Based on the information given above, Which of the following statements regarding this folding process are correct?
endothermic
exothermic
Enthapically driven
Entropically driven
Enthalpically opposed
Entropically opposed
at equilibrium
Exergonic for all temperatures
Endergonic for all temperatures
Chapter 24 Solutions
Chemistry & Chemical Reactivity
Ch. 24.1 - Draw the Lewis structure for the tripeptide...Ch. 24.1 - Prob. 1RCCh. 24.1 - Prob. 2RCCh. 24.1 - Prob. 3RCCh. 24.2 - Prob. 1RCCh. 24.2 - Prob. 2RCCh. 24.2 - Prob. 3RCCh. 24.3 - What is the sequence of the strand of DNA...Ch. 24.3 - Prob. 2CYUCh. 24.3 - 1. Which breaks down more quickly in an aqueous...
Ch. 24.3 - Prob. 2RCCh. 24.3 - 3. Which amino acid is selected by the mRNA codon...Ch. 24.3 - Kynamro has the hydrogen bonding sequence:...Ch. 24.3 - The formula of Kynamro is...Ch. 24.3 - Prob. 3QCh. 24.4 - 1. Which of the following is not an example of a...Ch. 24.4 - Prob. 2RCCh. 24.5 - Prob. 1RCCh. 24.5 - Prob. 2RCCh. 24.5 - Prob. 1QCh. 24.5 - Prob. 2QCh. 24.5 - Prob. 3QCh. 24 - (a) Draw the Lewis structure for the amino acid...Ch. 24 - (a) Draw the Lewis structure for the amino acid...Ch. 24 - Prob. 3PSCh. 24 - Prob. 4PSCh. 24 - Draw Lewis structures for the two dipeptides that...Ch. 24 - Do the amino acid sequences: valine-asparagine and...Ch. 24 - Draw the Lewis structure for the tripeptide...Ch. 24 - Prob. 8PSCh. 24 - Prob. 9PSCh. 24 - Prob. 10PSCh. 24 - Prob. 11PSCh. 24 - Prob. 12PSCh. 24 - (a) Draw the structural formula for the sugar...Ch. 24 - (a) Draw the structural formula for the sugar -D-2...Ch. 24 - Prob. 15PSCh. 24 - Prob. 16PSCh. 24 - Given the following nucleotide sequence in DNA:...Ch. 24 - Given the following nucleotide sequence in DNA: 5'...Ch. 24 - Prob. 19PSCh. 24 - If a drop of oleic acid is added to a dish of...Ch. 24 - What structure do all steroids have in common?Ch. 24 - Prob. 22PSCh. 24 - Prob. 23PSCh. 24 - The chemical equation for the fermentation of...Ch. 24 - Prob. 25PSCh. 24 - Prob. 26PSCh. 24 - Prob. 27GQCh. 24 - Prob. 28GQCh. 24 - Prob. 29GQCh. 24 - Prob. 30GQCh. 24 - Prob. 31GQCh. 24 - There are 41 = 4 mononucleotides of DNA, there are...Ch. 24 - Prob. 33GQCh. 24 - The first step of the metabolic process known as...Ch. 24 - Prob. 35ILCh. 24 - Insulin is a protein important in the metabolism...Ch. 24 - Prob. 37SCQCh. 24 - Prob. 38SCQCh. 24 - Do the DNA sequences ATGC and CGTA represent the...Ch. 24 - Prob. 41SCQCh. 24 - Which of the following statements is/are true? (a)...
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- Glycolysis is the process by which glucose is metabolized to lactic acid according to the equation C6H12O6(aq)2C3H6O3(aq) G=198 kJ at pH 7.0 and 25°C Glycolysis is the source of energy in human red blood cells. In these cells, the concentration of glucose is 5.0103 M, while that of lactic acid is 2.9103 M. Calculate AG for glycolysis in human blood cells under these conditions. Use the equation G=G+RT In Q, where Q is the concentration quotient, analogous to K.arrow_forwardAt what temperature is this reaction at equilibrium? 1,3-Bisphosphoglycerate + ADP →ATP + 3-Phosphoglycerate + H+: ΔH = 41.02 kJ/mol and ΔS = 0.3030 kJ/molK. All answers should be in units of Kelvinarrow_forwardFor a given acid HA, it was determined that at pH 6.0 the concentration of the conjugate base [A] was 0.075 M and the acid [HA] was 0.025 M. What percent of this acid is ionized at pH 6.0? What is the pKa of this acid? What pH would this acid be 50% lonized?arrow_forward
- a 75 kg adult requires a calorie intake of 2000 Cal of food every 24 hours. The food is metabolized, and the free energy is used to synthesis ATP for useful work. {each Calorie listed on food labels corresponds to 1.0 Cal in biochemical terms}. Assuming that the efficiency of converting food energy into ATP is 50%. Calculate the weight of ATP used by this human in 24 hours and the percentage of the person’s body weight that this represents. {the formula mass of ATP is 505 g/mol and each mole of ATP is equivalence to 7.30 Cal}arrow_forwardWould you expect the reaction ATP → ADP + Pito be accompanied by a decrease or increase in entropy? Why?arrow_forwardUse the following information corresponding to 1 Molar concentrations of reactants and products for Questions 7 -12. Glycerol + ATP → ADP + 3-Phosphoglycerate: ΔHo’ = -63.39 kJ/mol and ΔS o’ = -0.1255 kJ/molK. At what temperature (if any) is this reaction endergonic? Report your answer in Kelvin using inequality signs with out and extra spaces added in. For example T=100.00K T>100.00K T<100.00K T</=100.00K less than or equal to T>/=100.00K greater than or equal toarrow_forward
- Many metabolites are maintained at steady-state concentrations that are far from equilibrium. A comparison of Keg and Q, the mass-action ratio, can determine whether a metabolic reaction is far from equilibrium. The equation for this equilibrium is, fructose 6-phosphate + ATP = fructose 1,6-bisphosphate + ADP Calculate Keg for this reaction at T = 25.0 °C. AG' = -14.2 kJ/mol Keg = Calculate the mass-action ratio, Q, from the approximate physiological concentrations for rat heart tissue shown in the table. Metabolite Concentration (µM) fructose 6-phosphate 82.0 Q = fructose 1,6-bisphosphate 31.0 АТР 12,900 ADP 1,390arrow_forwardThe metabolism of glucose produces CO2 and H2O, how does the human body expect these reaction products?arrow_forwardGlucose-1-phosphate = glucose-6-phosphate AG'o = - 7.3 kJ mol-1 Glucose-6-phosphate = fructose-6-phosphate AG'O = + 1.7 kJ mol-1 Calculate the equilibrium constant, K'eg, for the conversion of glucose-1-phosphate to fructose-6-phosphate. You can use a value of RT = 2.48 kJ mol-1.arrow_forward
- In glycolysis, the enzyme pyruvate kinase catalyzes this reaction: phosphoenolpyruvate + ADP → pyruvate + ATP Calculate the equilibrium constant for this reaction from the following information. (R 8.315 J/mol K; T = 298 K) Reaction 1: ATP → ADP+ Pi AG-30.5 kJ/mol Reaction 2: AGO-61.9 kJ/mol phosphoenolpyruvate pyruvate + Piarrow_forwardActual free-energy change is a function of the reactant and product concentrations and the temperature at which the reaction occurs. AG = Go + RT In Use the equation for the actual free-energy change to plot AG against In Q at 25 °C for the five concentrations of ATP, ADP, and P₁ shown in the table. The AG' for the reaction is -30.5 kJ/mol. Concentration (mm) 0.2 5.0 14.9 O O AG (kJ/mol) Metabolite ATP ADP P₁ Select the graph that plots the data. AG (kJ/mol) 0 -20 -40 -~ 0 200 0 -200 [C]c[D]d [A]a[B]b -400 T 2 5 0.2 10 2 T 4 3 2.2 12.1 InQ 6 4 InQ 6 8 1 4.2 14.1 10 8 5 25 10 AG (kJ/mol) AG (kJ/mol) 0 -20 -40 -10 -8 0 -20 -40 -6 -4 InQ -2 0arrow_forwardWhat is the relationship between free-energy change for a reaction and it's equilibrium constant?arrow_forward
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