Two of the four stages of cellular respiration are glycolysis and pyruvate oxidation, Which of the following statements about these two stages is NOT CORRECT? A. During glycolysis the oxidation of glucose releases CO2. B. In glycolysis, ATP is generated by substrate-level phosphorylation. C. Glycolysis includes steps that consume ATP. D. Pyruvate oxidation involves a decarboxylation (loss of CO2) step.
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- a) What is the process by which cells generate ATP through a series of redox (chemical) reactions called? How many ATPs generated through this process from one Glucose molecule? b) What does cellular respiration accomplish for the cell? c) What happens to the NADH produced in glycolysis? Why does it need to get into the mitochondria? d) Write the role of O2 in cellular respiration. e) What happens to our body’s enzyme activity during fever? f) What is the difference between apo-enzyme and holo-enzyme? g) What is meant by the term specificity in relation to enzyme activity? h) If humans evolved from apes, why are there still apes? i) What are the risk factors of type 2 diabetes? j) Why was Lamarck wrong about giraffes?Which of the following statements is true? A. The citric acid cycle occurs in the mitochondria matrix B. The citric acid cycle occurs in the cytosol C. Electron transport chain and ATP synthase are in the cytosol D. Oxidative phosphorylation occurs in the mitochondria matrixWhich 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.
- During cellular respiration, 60 molecules of CO2 were given off as waste. a. How many pyruvate molecules were produced in glycolysis? b. The total amount of ATP produced by complete cellular respiration would be? c. The amount of energy available (Net ATP) to cell as ATP would be?Cyanide is a highly toxic molecule. It bonds to a cytochrome in the electron transport chain located in the mitochondria, rendering the electron transport chain useless. The ingestion of cyanide, therefore, results in death due to which of the following? a) Starvation, due to an inability to create glucose. b) Build up of lactic acid. c) Inability to take in oxygen through the lungs. d) Cellular death from lack of energy.The oxygen (O2) consumed during aerobic cellular respiration is involved directly in which process or event? A) the phosphorylation of ADP to form ATP B)accepting electrons at the end of the electron transport chain C)glycolysis D)the oxidation of pyruvate to acetyl-CoA E)the citric acid cycle 12.
- Which of the following are the final by-products of glucose oxidation during aerobic cellular respiration? A. carbon dioxide and water only B. ATP, heat, carbon dioxide, and water C. heat only D. both ATP and heat only E. ATP onlyWhich 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 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 process
- Citrate, an intermediate in the TCA cycle, affects the activity of the enzyme phosphofructokinase, the enzyme that catalyzes the third step of glycolysis. Based on the expected logic of feedback in metabolism, which of the following is likely true? a. Citrate inhibits phosphofructokinase b. Phosphofructokinase inhibits citrate c. There is no logical reason for feedback to exist in this case d. Citrate activates phosphofructokinaseListed are some hypothetical medical conditions, describe their effect on cellular respiration (specifically refer to the effect they will have on energy production). a) A person is unable to take glucose into their cells. b) A mutation occurs in the ATP synthase protein and it is inactive. c) The mitochondrial inner membrane is very permeable to H+.A total of 32 mol of ATP can be produced by the complete oxidation of 1 mol of glucose in the liver. Indicate the number of these moles of ATP produced by a. glycolysis b. the citric acid cycle c. the electron transport chain and oxidative d. phosphorylation