Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 3RQ
What role do the following play in breaking down and harvesting energy from glucose: glycolysis,
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In which step of glycolysis does each of the following occurs?
second substrate-level phosphorylation reaction
first ATP-consuming reaction
third isomerization reaction
use of NAD+ as an OA
Why are electron carriers (NAD+/NADH and FAD/FADH2) so important in the process of cellular respiration?
A)NADH and FADH2 are major components of the ETC, so without them, there would be no ETC in the cell.
B)They deliver electrons to the ETC, which in turn sets up chemiosmosis, where most of the ATP is generated.
C)They separate the electrons from the protons so that the protons can be moved out of the mitochondrion.
D)The electrons that they carry are able to directly phosphorylate ADP in order to generate the bulk of ATP in the cell.
E) They transport protons across the mitochondrial membrane.
14.
A proton gradient is created during the electron transport chain using the energy released from the oxidation of NADH and FADH2. The protons then cross the membrane through ATP synthase down their electrochemical gradient, and ATP is produced. This is an example of
A) energy coupling
B) cotransport
C) allosteric regulation.
Chapter 8 Solutions
Biology: Life on Earth (11th Edition)
Ch. 8 - Which of the following is True for one glucose...Ch. 8 - 2. The portion of glucose breakdown that produces...Ch. 8 - Prob. 3MCCh. 8 - Prob. 4MCCh. 8 -
5. Which of the following is produced in the...Ch. 8 - Prob. 1FTBCh. 8 - 2. Conditions in which oxygen is absent are...Ch. 8 - Prob. 3FTBCh. 8 - During cellular respiration, the electron...Ch. 8 -
5. The cyclic portion of cellular respiration is...
Ch. 8 - Starting with glucose (C6H12O6), write the overall...Ch. 8 - Draw and label a mitochondrion, and explain how...Ch. 8 -
3. What role do the following play in breaking...Ch. 8 -
4. Outline the two major stages of glycolysis....Ch. 8 - What molecule is the end product of glycolysis?...Ch. 8 -
6. Describe the electron transport chain and the...Ch. 8 - Why is oxygen necessary for cellular respiration...Ch. 8 -
8. Compare the structure of chloroplasts...Ch. 8 - Some species of bacteria use aerobic respiration,...Ch. 8 - Prob. 2ACCh. 8 - Prob. 3ACCh. 8 - Some species of bacteria that live at the surface...
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- Table 7: ATP Yield from Aerobic Respiration (for 1 Glucose Molecule) in a Eukaryotic Cell # of ATPS Generated from NADH and FADH, through Oxidative # of ATPS Generated through Substrate-Level Phosphorylation # of NADH and FADH2 Produced Gross Subtotal of ATPS Produced Process Phosphorylation NADH: FADH2: NADH: FADH2: Glycolysis Transition Step NADH: FADH2: GROSS TOTAL of ATPS Produced # of ATPS Spent NET TOTAL of ATPS Produced Krebs Cyclearrow_forward5. a) The cell creates molecules of NADH and FADH2to use in the electron transport chain as they are electron carrier molecules. The electron transfers from these moleculesdrives the movement of what molecule across the mitochondrial membrane?b) What is chemiosmosis?c) How does the cell use chemiosmosis to drive overcome the thermodynamic barrier of bringing phosphates close togehter to create ATP?d) What steps of oxidative phosphorylation are in the cytosol and which are in the mitochondria?e) Cellular respiration can be controlled at the post-translational level. What does this mean, using GLUT as an example? Why is post-translational control of GLUT evolutionarilyadaptive over transcriptional control?f) How does establishment of equillibria of various molecules control metabolic reactions? What are three ways high ATP in the cell control cellular respiration?g) Why are the enzymes controlling the initial steps of various biochemical pathways are targeted by allosteric control?arrow_forwardTable 8: ATP Yield from Anaerobic Respiration (for 1 Glucose Molecule) # of ATPS Generated through Substrate-Level Phosphorylation # of ATPS Generated from NADH and FADH, through Oxidative # of NADH and FADH, Produced Gross Subtotal of ATPS Produced Process Phosphorylation NADH: FADH2: Glycolysis NADH: FADH2: GROSS TOTAL of ATPS Produced # of ATPS Spent NETTOTAL of ATPS Produced Fermentationarrow_forward
- Thermogenin in the inner membrane of brown fat cell mitochondria does all of the following except A) decrease the proton gradient. B) uncouple ATP synthesis from electron transport. C) generate heat. D) decrease ATP synthesis. E) increase ATP synthesisarrow_forwardHow many ATP (net) are made in the glycolysis part of cellular respiration? How many ATP are made in the Kreb's/Citric Acid cycle part of cellular respiration? How many ATP are made in the electron transport part of cellular respiration? In which phase of cellular respiration is carbon dioxide made? In which phase of cellular respiration is water made? In which phase of cellular respiration is oxygen a substrate? In which phase of cellular respiration is glucose a substrate? On average, how many ATP can be made from each NADH during the electron transport process? On average, how many ATP can be made from each FADH₂ during the electron transport process?arrow_forwardHow much ATP is made available to the cell from a single glucose molecule by the operation of (1) glycolysis, (2) the formation of acetyl CoA, (3) the citric acid cycle, and (4) the electron transport chain and chemiosmosis?Where does each of these processes take place in a eukaryotic cell?arrow_forward
- Indicate whether the statement is true for aerobic respiration, photosynthesis or both: The transfer of electrons via redox reactions is coupled to the movement of protons from one side of the membrane to the other a)Aerobic Respiration b)Photosynthesis c)Botharrow_forwardHow does the proton motive force lead to production of ATP? A) ATPase requires one proton to make one ATP. B) Protons must be pumped against a concentration gradient from outside of the cell into the cell to rotate the F0 subunit of ATPase for the F1 subunit to make ATP. C) Oxidative phosphorylation of ADP by ATP synthase requires protons as cofactors in the reaction. D) Translocation of three to four protons drives the F0 component of ATPase, which in turn phosphorylates one ADP into ATP.arrow_forwardWhich of the following processes do NOT require oxygen? 1) glycolysis 2) cellular respiration 3) ATP production in the mitochondria 4) CO2 productionarrow_forward
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