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Which of the following statements does NOT explain the Krebs cycle?
a. It produces 6 carbon dioxide in the breakdown of a molecule of glucose.
b. t produces 6 NADH from the breakdown of a molecule of glucose.
c.It produces 2 ATP molecules in substrate level phosphorylation.
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- Which of the following statements is/are FALSE for the Krebs’ cycle? A. It is an amphibolic process. B. All nutrients are oxidized to CO2 and H2O. C. It occurs in the mitochondria. D. Involves acids with 3 carbonyl groups.Which of the following statements is TRUE of the electron transport chain (ETC)? A. The movement of electrons down the ETC drives the formation of a proton (H+) gradient. B. The movement of H+ ions through ATP synthase drives the transfer of electrons down the ETC. C. The movement of electrons down the ETC drives the movement of ADP and phosphate through ATP synthase. D. The movement of H+ ions across the inner membrane of the mitochondria drives the transfer of electrons down the ETC.What is the role of NAD+ in the process of cellular respiration? a. It functions as an electron carrier. b. It functions as an enzyme. c. It is the final electron acceptor for anaerobic respiration. d. It is a nucleotide source for the synthesis of ATP.
- Which statement about the ATP synthase is false? a. It is a rotary machine b. It is located in the inner mitochondrial membrane c. It can make ATP, or it can break ATP down d. It only contains membrane-embedded regionsWhich of the following is NOT true of the electron transport chain? a. It produces NADH, as a result of electrons being transferred from glucose to NAD+ b. End products include CO2, water, and pyruvate c. It allows for the controlled release of energy for ATP synthesis d. It is part of the oxidative phosphorylation processWhich of the following statements is a lie?Select one:a.Specific enzymes in the electron transport chain are unaffected by feedback inhibition.b.Elevated levels of ADP will increase pathway activity in the electron transport chain.c.The rate of transport of electrons through the electron transport chain is regulated by feedback inhibition.
- Which one of the following processes is endergonic? Question 6 options: a) the burning of wood b) the release of heat from the breakdown of glucose c) the breakdown of glucose d) the synthesis of glucose from carbon dioxide and water e) cellular respirationWhich of the following is the most likely explanation for a situation where the ELECTRON TRANSPORT CHAIN (ETC) does not produce ATP in the presence of oxygen. a. A toxin has disrupted the Krebs Cycle b. A toxin has altered a protein in the ETC c. Too much NADH has been produced in the Krebs Cycle d. Too much NADH has been produced in GlycolysisWhich of the following statements is NOT true about Krebs Cycle? a. Krebs cycle is composed of 8-step enzymatic reactions. b. For every CO2 released in the cycle, NADH is produced. c. Succinyl-CoA allows the phosphorylation of GDP (Guanosine Diphosphate) d. The carbon atoms from the glucose that enters the cycle are released from the mitochondrion immediately.
- What is the difference between cellular respiration and fermentation? Select an answer. a) cellular respiration does not need oxygen, while fermentation needs oxygen b) cellular respiration needs oxygen, while fermentation does not need oxygen c) cellular respiration produces very little energy, while fermentation produces a lot of energy d) Almost all cells carry out fermentation, while few carry out cellular respirationWhich of the following is likely to happen in a muscle cell in an anaerobic environment? Question 9 options: a) The conversion of pyruvic acid to lactic acid b) The Krebs Cycle c) Photosynthesis d) The conversion of pyruvic acid to Acetyl CoAWhich of the following is true about cell potential? a. It is the sum of the oxidation and reduction potentials b. It is the average of the oxidation and reduction potentials c. It is the reduction potential multiplied by the oxidation potential. d. It is the difference between the reduction and oxidation potentials.