Ch 24_ Metabolism_ Review Questions

Ch 24_ Metabolism_ Review Questions - Ch 24 Metabolism...

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Ch 24: Metabolism: Review Questions Due: 12:00pm on Wednesday, October 26, 2016 You will receive no credit for items you complete after the assignment is due. Grading Policy Chapter 24 Reading Quiz Question 1 Part A Which nutrients function primarily as an energy source for cells? ANSWER: Correct Carbohydrates are needed in relatively large amounts to supply glucose, the main energy source for body cells. Art­based Question Chapter 24 Question 1 Part A Which of the following is represented by the membrane indicated in the figure? ANSWER: electrolytes vitamins carbohydrates minerals
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Correct The enzyme complexes shown represent the electron transport chain and ATP synthase, both of which are integrated into the inner mitochondrial membrane. Art­based Question Chapter 24 Question 3 Part A Which of the following molecules is most directly involved in the transfer of energy from food to the proton pumps depicted in this figure? ANSWER: Correct Energy released during glycolysis and the Krebs cycle is captured as NAD + is reduced to NADH. NADH then donates the energy via electrons to the proton pumps. Art­based Question Chapter 24 Question 7 outer mitochondrial membrane plasma membrane nuclear membrane inner mitochondrial membrane ATP NADH oxygen ADP
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Part A Which of the following is a common feature of the processes indicated by both letters D and E? ANSWER: Correct The hydrogen atoms removed from food molecules during glycolysis and the citric acid cycle can be thought of as the combination of protons and high­ energy electrons. These are both carried by the coenzyme NADH (and, in the case of the citric acid cycle, FADH 2 ) from the catabolic pathways to the electron transport chain. Art­based Question Chapter 24 Question 8 Part A Which of the following is a true statement regarding the reactions indicated by the letters F and G? movement of organic food molecules between catabolic pathways movement of phosphate groups associated with ADP movement of hydrogen atoms associated with NADH movement of pyruvic acid into the mitochondria
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ANSWER: Correct Letters F and G both indicate the synthesis of ATP by substrate­level phosphorylation. Chapter 24 Reading Quiz Question 2 Part A What is the primary function of cellular respiration? ANSWER: Correct Cellular respiration takes energy from our food nutrients and transfers that energy into a usable form of energy in ATP. Chapter 24 Chapter Test Question 4 Both reactions involve the transfer of electrons from an organic substrate to the molecule ATP. Together, the reactions indicated by the letters F and G produce most of the ATP synthesized during cellular respiration. Both reactions include the synthesis of ATP powered by the diffusion of H + ions. Both reactions involve the transfer of a phosphate group from an organic substrate to ADP.
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