CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
3rd Edition
ISBN: 9780136811206
Author: Urry
Publisher: SAVVAS L
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Textbook Question
Chapter 7.5, Problem 2CC
WHAT IF? A glucose-fed yeast cell is moved from an aerobic environment to an anaerobic one. How would its rate of glucose consumption change if ATP were to be generated at the same rate?
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CHCASE
Dashboard
A student conducts two experiments to observe the effects of different factors on ATP production during aerobic cellular respiration. In the first experiment, the
student isolates mitochondria in a test tube, adds oxygen to the test tube, and measures the amounts of ATP produced at three temperatures. In a second
experiment, the student keeps the temperature the same and varies the concentration of oxygen added to the test tube for each trial, The student records all data
in the table shown.
Ite
Ite
Ite
Experiment Trial Temperature Oxygen Concentration
(°C)
ATP Produced
(mol/L)
(mol/L)
Iter
1
25
15
1.5
Iter
1
30
15
1.8
Item
35
15
2.6
Iter
35
25
3.5
Iter
2
2
35
35
3.8
Item
3
35
45
4.2
Based on the experiments, which statement can be concluded concerning ATP production during aerobic cellular respiration?
O Increasing the temperature or the oxygen concentration improves the efficiency of ATP production during aerobic cellular respiration.
O Decreasing the temperature or…
What is a difference between Substrate-level Phosphoratation, and Oxidative Phosphoralation?
Question options:
Substrate-level Phosphoratation only occurs in the cytoplasm, not in the mitochondria
In Oxidative Phosphorylation, ADP is oxidized, forming ATP
Oxidative-level Phosphorylation only occurs in the mitochondria, not in the cytoplasm.
Substrate-level Phosphorylation can only occur in the presence of oxygen
MAKE CONNECTIONS Step 3 in Figure 9.9 is a major pointof regulation of glycolysis. The enzyme phosphofructokinaseis allosterically regulated by ATP and related molecules (seeConcept 8.5). Considering the overall result of glycolysis,would you expect ATP to inhibit or stimulate activity of thisenzyme? Explain. (Hint: Make sure you consider the role of ATPas an allosteric regulator, not as a substrate of the enzyme.)
Chapter 7 Solutions
CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
Ch. 7.1 - Compare and contrast aerobic and anaerobic...Ch. 7.1 - Name and describe the two ways in which ATP is...Ch. 7.1 - Prob. 3CCCh. 7.2 - During step 6 in Figure 7.9, which molecule acts...Ch. 7.3 - Name the molecules that conserve most of the...Ch. 7.3 - Prob. 2CCCh. 7.4 - Prob. 1CCCh. 7.4 - Prob. 2CCCh. 7.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 7.5 - Prob. 1CC
Ch. 7.5 - WHAT IF? A glucose-fed yeast cell is moved from an...Ch. 7.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 7.6 - Prob. 2CCCh. 7.6 - WHAT IF? During intense exercise, can a muscle...Ch. 7 - The immediate energy source that drives ATP...Ch. 7 - Which metabolic pathway is common to both...Ch. 7 - In mitochondria, exergonic redox reactions A. are...Ch. 7 - The final electron acceptor of the electron...Ch. 7 - What is the oxidizing agent in the following...Ch. 7 - When electrons flow along the electron transport...Ch. 7 - Most co, from catabolism is released during A....Ch. 7 - DRAW IT The graph here shows the pH difference...Ch. 7 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 7 - Prob. 10TYUCh. 7 - FOCUS ON EVOLUTION ATP synthases are found in the...Ch. 7 - Prob. 12TYUCh. 7 - Prob. 13TYU
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- . Heterotrophic eukaryotes generate exactly how many of the following product molecules, in the consumption of one molecule of glucose, during aerobic respiration? twelve C6H12O6 molecules, six H2O molecules, and three CO2 molecules are produced twelve H2O molecules and six CO2 molecules are produced six C6H12O6 molecules, three H2O molecules, and six CO2 molecules are produced six H2O molecules and twelve CO2 molecules are produced one C6H12O6 molecule, one H2O molecule, and two CO2 molecules are producedarrow_forwardWhich of the following among A- D is incorrect regarding the proton motive force and ATP synthase (ATPase)? A) O The F1 subunit of the ATPase binds ADP and phosphate, forms ATP, and then releases ATP B) O Increasıng the difference in pH across the membrane of a bacterial cell would likely increase its proton motive force. O O The ATPase is a molecular motor that moves as protons flow through it. D) O Increasing the negative charge inside a bacterial cell would likely increase the proton motive force. E) O All of A- D is correct.arrow_forwardWHAT IF? What would happen if a molecule that inactivatedphosphodiesterase were introduced into the cell?arrow_forward
- What is ATP? Where is the energy held in this molecule? Describe the generalized reversible reaction for release of energy from ATP and explain the role of ATP in the cell. What organelle is responsible for aerobic production of ATP? What are the other two methods of ATP production in the cells? What is cellular respiration?arrow_forward1 The glycolysis reaction follows two step. The initiation requires the input of two ATP, which become converted to ADP but ADP is not a product in the net reaction for glycolysis. Why? 2. NADPH is readily available to donate its electrons in the cell because it occurs in such high concentration. Aside from helping build molecules, what kind of benefit is this really for the cell? 3.Does gluconeogenesis require oxygen? Yes? No? Why? 4 Erythrocytes are the only cells of the body that use glycolysis for ATP production. Why?arrow_forwardCONNECT How are the endergonic reactions of the first phase of glycolysis coupled to the hydrolysis of ATP, which is exergonic? How are the exergonic reactions of the second phase of glycolysis coupled to the endergonic synthesis of ATP and NADH?arrow_forward
- . An aerobic prokaryotic cell is able to generate a maximum of how many molecules of ATP from the complete catabolism of one glucose molecule into carbon dioxide and water? 2 molecules of ATP 4 molecules of ATP 6 molecules of ATP 30 molecules of ATP 32 molecules of ATParrow_forwardA glucose-fed yeast cell is moved from an aerobic environment to an anaerobic one. How would its rate of glucose consumption change if ATP were to be generated at the same rate?arrow_forwardI am needing help with 1 through 3, please 1) Using the graphs, indicate if the data supports or does not support the hypothesis: The rate of balloon inflation will be directly proportional to the amount of sugar added to the yeast solution. Also, which graph illustrates the most clearly what happened in the experiment and why? 2) Which graph illustrates the most clearly what happened in the experiment? Why? 3) Glycolysis in an anaerobic environment produces a net of 2 ATP and Pyruvate. Why does Yeast bother to ferment Pyruvate to Ethanol?arrow_forward
- Q3 Calculate the actual, physiological AG for the reaction Phosphocreatine Creatine NH--PO3 HN=c NCH,-CO0 NH2 NH=c. HNCH2- COO ČH3 Creatine ADP phosphokinase АТР At 37 °C, as it occurs in the cytosol of neurons, with phosphocreatine at 4.7 mM, creatine at 1.0 mM, ADP at 0.73 mM and ATP at 2.6 mM. HINT: AG° = 30.5 kJ/mol AG° = -43.0 kJ/mol ADP + Pi -> ATP + H,0 Phosphocreatine + H2O -> creatine + Piarrow_forwardQ36. The picture below shows a preparation of isolated thylakoid membranes suspended in a buffer at pH 8. The preparation is in complete darkness. Which of the following is required in order for the thylakoids to generate ATP? A. Addition of ADP and phosphate to the buffer. B. Incubation in the light plus ADP and phosphate. C. Incubation in the light plus addition of ADP, phosphate and NADP+. D. Isolated thylakoid membranes are not able to synthesize ATP.arrow_forwardDuring chemiosmosis... a concentration gradient is generated when large numbers of H+ ions are passively transported from the mitochondrion's intermembrane space to the matrix. ATP is synthesized when H* ions move through a channel in ATP synthase. energy is released as H+ ions move freely across mitochondrial membranes. H+ ions serve as the final electron acceptor.arrow_forward
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