Concept explainers
Interpretation:
Identify the correct statement about
Concept introduction: The sum of various
In catabolism, the metabolic reactions occur so that large
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Chapter 23 Solutions
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- Which of the following is true of metabolism? A. Degradative reactions require an input of energy. B. Synthetic pathways are anabolic. C. Catabolism and anabolism are linked by O2. D. Catabolic reactions require the breakdown of ATP, and anabolic reactions generate ATP.arrow_forwardWhich of these statements about ATP is true?a.The bond joining ADP and the third phosphate is a high-energy bond.b.The formation of ATP is coupled to energy-liberating reactions.c.The conversion of ATP to ADP and Pi provides energy for biosynthesis, cell movement, and other cellular processes that require energy.d.ATP is the “universal energy carrier” of cells.e. .All of these are true.arrow_forwardHomeostatic systems maintain a steady-state set point over time using negative feedback. Which one of the following statement is NOT TRUE for stability of metabolic system: Select one: a. Step changes in a controlled variable will return the system to its original state using negative feedback b. Metabolic systems that oscillate must have multiple control variables c.A positive feedback system is stable over time, maintaining a steady state d. Perturbations from steady state, either positive or negative, result in recovery reactions that returm the system to is original state.arrow_forward
- Chemotrophic energy metabolism is a catabolic and exergonic process that produces ATP from oxidizing molecules. Which among the following is not an energy source of chemotrophic energy metabolism? A. Iron B. Photons C. Carbohydrates D. Proteinsarrow_forwardWhich of the following is a primary function of the active site of an enzyme? a. It binds allosteric regulators of the enzyme. b. It binds noncompetitive inhibitors of the enzyme. c. It catalyzes the reaction associated with the enzyme. d. It is activated by the presence of the end product of the metabolic pathway in which the enzyme is involved. Clear my choice Question 2 Not yet answered Points out of 2.00 Flag question Question text Which of the following statement about the mass spectrometry is true? a. Large amount of protein sample is needed for mass spectrum, and thus it is very expensive. b. It is a powerful method to determine the 3-dimensional structure of proteins. c. It can be sued for protein location in a living cell. d. It can be used to measure the molecular weight of proteins. e. It can be used to determine the stability of a protein structure in solution. Clear my choice…arrow_forwardIn an inborn error of metabolism, a. a genetic change results in the production of a defective enzyme. b. intermediates produced prior to the defective step accumulate. c. alternate pathways are taken by intermediates at branch points that precede the defective step. d. All of these are true.arrow_forward
- Statement 1: Carl Alexander Neuberg is considered as the "Father of Modern Biochemistry" in recognition of his boldness to disprove the theory of vitalism. Statement 2: His elucidation of the biochemical reactions of alcoholic fermentation also gained international recognition. A. Both the given statements are false. B. Both the given statements are true. C. Only the first given statement is true. D. Only the second given statement is true.arrow_forwardWhat distinguishes a linear metabolic pathway from a cyclic metabolic pathway? A. The last step of the pathway regenerates a reactant for the first step. B. The product inhibits an enzyme in the pathway, slowing or stopping the metabolic pathway. C. A linear pathway runs straight in one direction from reactant to product. D. Enzymes convert reactants into intermediates before separate enzymes convert intermediates into products.arrow_forwardWhich of the following choices BEST describes metabolism? a. breakdown of biomolecules b. controlled by enzymes and involved ATP c. all of the choices are correct d. synthesis of biomoleculesarrow_forward
- Which of the following statements concerning metabolic pathways is INCORRECT? a. Metabolic pathways always involve a series of consecutive reactions b. All cyclic metabolic pathways regenerate the starting material for the pathway c. All linear metabolic pathways generate a final product D. No correct responsearrow_forwardWhich of the following distinguishes fermentation from aerobic respiration? (Only one choice is correct). A. Fermentation requires an input of oxygen. B. Fermentation occurs under anaerobic conditions. C. Fermentation has a higher ATP yield than aerobic respiration. D. Fermentation breaks down all of the carbon–carbon bonds in a glucose molecule.arrow_forwardWhich of the following statements is/are true regarding ATP?a. It is the body’s primary source of chemical energy.b. Its production is the main reason humans breathe oxygen.c. It is produced through the oxidation of molecular fuels like glucose.d. All of the above statements are true.arrow_forward
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