Which of the following statements concerning the metabolic degradation of glucose (CH1206) to carbon dioxide (CO2) and wate is (are) true? Check all that could apply The breakdown of glucose to carbon dioxide and water is exergonic The breakdown of glucose to carbon dioxide and water involves oxidation-reduction or redox reactions. The breakdown of glucose to carbon dioxide and water has a free energy change of -686 kcal/mol.

Which of the following statements concerning the metabolic degradation of glucose (CH1206) to carbon dioxide (CO2) and wate is (are) true? Check all that could apply The breakdown of glucose to carbon dioxide and water is exergonic The breakdown of glucose to carbon dioxide and water involves oxidation-reduction or redox reactions. The breakdown of glucose to carbon dioxide and water has a free energy change of -686 kcal/mol.

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter23: Fatty Acid Catabolism

Section: Chapter Questions

Problem 12P: Understanding Human Energy Consumption During Exercise Energy production in animals is related to...

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Using the set of data that follows, calculate how many of themolecules of O2 that were used in aerobic catabolism by JuliusCaesar are in each liter of atmospheric air today. All valuesgiven are expressed at Standard Conditions of Temperature andPressure (see Appendix C) and therefore can be legitimatelycompared. Average rate of O2 consumption of a human maleduring ordinary daily activities: 25 L/h. Number of years afterhis birth when Caesar was mortally stabbed near the RomanForum: 56 years. Number of liters of O2 per mole: 22.4 L/mol.Number of moles of O2 in Earth’s atmosphere: 3.7 × 1019 mol.Number of molecules per mole: 6 × 1023 molecules/mol. Amountof O2 per liter of air at sea level (20°C): 195 mL/L. Be prepared tobe surprised! Of course, criticize the calculations if you feel theydeserve criticism.
A scientist is studying the enzyme X which is an important point of regulation in the metabolism of the inhabitants of Sumeru. He developed four Akademiyan-derived compounds which may possibly work against this enzyme, and tested using an eudiometer the metabolic rate of the sample cell lines. Data are below. Time for each compound (min) Eudiometer volume reading (mL) A B C D 0 83.1 62.6 89.0 66.4 5 83.2 100.6 90.2 71.4 10 83.2 83.6 95.0 77.2 15 83.2 83.6 100 84.6 20 83.3 110.8 104.6 88.2 Show the properly labeled volume versus time plot for each eudiometer, with the equation of the line and R2. What is the most effective inhibitor among the four compounds? It was found that the most effective inhibitor exhibits uncompetitive inhibition. Illustrate the Lineweaver-Burk plots of uninhibited and inhibited enzyme X with properly labeled axes.
The complete combustion of palmitate and glucose yields 9781 kJ ∙ mol−1 and 2850 kJ ∙ mol−1 of free energy, respectively. Compare these values to the free energy (as ATP) obtained though catabolism of palmitate and glucose under standard conditions. Which process is more efficient?
What terms would best describe the above coupled reaction? (If the DGo for ATP hydrolysis into ADP + inorganic phosphate is -7.3 kcal/mole, and the DGo for maltose synthesis from glucose + glucose is +3.7 kcal/mole, calculate the standard free energy change for the combined reaction of ATP + glucose + glucose g ADP + maltose + inorganic phosphate.) it is non-spontaneous and endothermic (because the overall DGo is negative) it is spontaneous and exothermic (because the overall DGo is negative) it is non-spontaneous and endothermic (because the overall DGo is positive) it is spontaneous and exothermic (because the overall DGo is positive) it is non-spontaneous and exothermic (because the overall DGo is negative)
According to Table 17.1, four reactions have positive ΔG values. How can this be explained?
A total of 30.5 kJ mol-1 of free energy is needed to synthesise ATP from ADP and Pi when the reactants and products are at 1.0 M concentrations and the temperature is 25oC. Because the actual physiological concentrations of ATP, ADP, and Pi are not 1.0 M, and the temperature is 37oC, the free energy required to synthesise ATP under physiological conditions is actually ~ 46.2 kJ mol-1. A 68 kg adult requires an energy intake of 8,550 kJ of food per day (24 hours). Calculate the mass (in Kg) of ATP synthesised by a human adult in 24 hours, assuming that the percentage efficiency of converting inputted calories in ATP is 50%. What percentage of the body weight does this represent?
Which of these statements concerning this reaction is true? acetaldehyde + NADH ↔ ethanol + NAD+ a) Ethanol is more reduced than acetaldehyde. b) Acetaldehyde is more reduced than ethanol. c) NAD+ is more reduced than NADH. d) Ethanol is more oxidized than acetaldehyde.
Given what you know about the involvement of nicotinamide nucleotides inoxidative and reductive metabolic reactions, predict whether the followingintracellular concentration ratios should be 1, > 1, or < 1. Explain youranswers.(a) [NAD+] >[NADH](b) [NADP+] >[NADPH](c) Since NAD+ and NADP+ are essentially equivalent in their tendency to attract electrons, discuss how the two concentration ratios might bemaintained inside cells at greatly differing values.
Choose all of the processes from below which describe changes which are independent of the path by which the change occurs. the elevation increase experienced by a traveller travelling from Grand Isle, LA to Denver, Coloradothe kinetic energy aquired by a bullet as it reaches a specific speedthe heat generated by a car engine as it burns a gallon of gasolinethe heat evolved when a cube of sugar is oxidized to CO2(g) and H2O(g)the work generated by a homogeneous gaseous chemical reaction carried out inside of a bomb calorimeterthe odometer mileage increase observed by a traveller travelling from Louisiana to Canadathe latitude increase experienced by a traveller travelling from Baton Rouge, LA to Anchorage, Alaska
Ouabain specifically inhibits the Na+K+ ATPase activity of animal tissues but is not known to inhibit any other enzyme. When ouabain is added to thin slices of living kidney tissue, it inhibits oxygen consumption by 66%. Why? What does this observation tell us about the use of respiratory energy bykidney tissue?
Consider the following chemical reaction: Glucose + ATP → Glucose-6-Phosphate + ADP + Pi Given the following information, calculate the actual free energy change (G’) of this reaction. G’ of Glucose + ATP → Glucose-6-Phosphate + ADP + Pi = -16.7 kJ/mol [Glucose] = 5.0 mM [ATP] = 1.85 mM [Glucose-6-Phosphate] = 0.083 mM [ADP] = 0.14 mM [Pi] = 1.0 mM Temperature = 37 C R (Gas Constant) = 8.314 J/mol•K
In discussing the energy of a physiological system, the Gibbs free energy is most relevant. Since the value of entropy cannot be known, change in the Gibbs free energy is more commonly used. In order to get reliable result we should hold all variables constant except the one we are interested in measuring. If you are interested in studying respiration in this perspective, which one of the following should be measured? Select one: a. Change in temperature b. Change in length c. Change in number of molecules d. Change in electrical charge e. Change in pressure