Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
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Textbook Question
Chapter 7.2, Problem 1CC
During step 6 in Figure 7.9, which molecule acts as the oxidizing agent? The reducing agent?
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Write a balanced equation showing the conversion of glucose and oxygen to carbon dioxide and water:
(a) Indicate in your equation which molecule becomes reduced?
(b) Indicate in your equation which molecule becomes oxidized?
(c) What happens to the energy that is released in this redox reaction?
(d) Name the oxidizing agent.
In this experiment, you will be monitoring changes in CO2 concentration due to
aerobic respiration and photosynthesis of each test organism. Which of the
following results would be expected from the conditions described?
Remember this is a closed system (the CO2 cannot escape), and we are monitoring
changes in CO2 concentration over a 3 minute period.
A) An animal will produce a higher increase in CO2 when exposed to the light
than when kept in the dark.
B) A plant will cause an overall higher increase in C02 concentration when
exposed to light versus an plant kept in the dark.
C) A plant will cause an overall higher increase of CO2 concentration when kept
in the dark versus a plant exposed to light.
D) An animal will show a decrease in CO2 while kept in the dark and an increase
in CO2 while in the light.
Identify the oxidizing and reducing agents in the followingreaction:
Chapter 7 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
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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- Which of the following statements about oxidation-reduction (redox) reactions is correct? A) The molecule that is oxidized loses electrons and is the oxidizing agent. B) The molecule that is reduced gains electrons and is the oxidizing agent. C) The molecule that is oxidized gains electrons and is the reducing agent.arrow_forwardRefer to picturearrow_forwarda) Write the general equation for cellular respiration. i) Based on the equation in 3a, what happen to the glucose and oxygen molecules during the redox reaction? Determine whether cellular respiration is an endergonic or exergonic process. Explain your answer. b) List the reactants and products for the process given i) Glycolysis. Reactants: Products (net): i) Citric acid cycle. Reactants: Products: c) How is ATP produced during Glycolysis and Citric acid cycle? d) Describe the process of ATP production by ATP synthase in oxidative phosphorylation.arrow_forward
- You are attempting to determine KM by measuring the reaction velocity at different substrate concentrations, but you do not realize that the substrate tends to precipitate under the experimental conditions you have chosen. How would this affect your measurement of KM?arrow_forward2.5 What is Chemio-osmotic gradient, and what is its importance in Metabolism 2.6 Glycolysis split Glucose into 2 Puryvate, where does a) Initial split, which Intermediate/s involved, b) which enzyme is involved and c) products produced....... 2.7 In ATP generation. Glycolysis does produce some ATPs, where does the bulk of ATP produced in the complete Oxidative? catabolic step/s and explain how? 3.1 Peter has been playing Volley Ball for 2hours now and he is very tired. He is now going home to rest. Answer the questions that follows from the scenario given: a) How will the process of Glycolysis be affected in this condition of Rest b) Explain his ATP at this stage of Rest d) How will the process of TCA cycle/Creb cycle be for Peter now at his rest d) The condition of Pyruvate Dehydrogenase (PDH) at this point of rest e) How will the state PFK (phospho fructo kinase) be at the beginning of his play (5) 3.2 NADH is mostly transported through which complexes in ETC (electron transport…arrow_forwardIn several species of bacteria, GAPDH activity is controlled by the NADH/NAD+ ratio. Does the activity of GAPDH increase or decrease when the NADH/NAD+ ratio increases? Explain. Assume that only the forward direction of the reaction is relevant. a) The activity of GAPDH increases when the NADH/NAD+ ratio increases. b) The activity of GAPDH decreases when the NADH/NAD+ ratio increases.arrow_forward
- 1) If we put a photosynthetic organism in a closed, sealed environment and shine a light on it, we observe that the CO2 and O2 levels in the container reach constant levels. a) Explain why this would occur. b) What factor/value would you expect to be the primary determinant of this value?arrow_forwardInterested in studying ethanol fermentation, you prepare two solutions of yeast extract that contains the cytosolic contents of Saccharomyces cerevisiae. You add glucose to both extracts at time zero, but to one (in red) you also add inorganic phosphate (added in two batches). Using a gas sensor, you monitor the CO2 generated by the two solutions over time and obtain the following data:arrow_forwardConsider the reaction catalyzed by PFK. In the presence of AMP, which of the following will be expected? Check all that apply: a)The Km for substrate would be decreased b) the initial velocity plot would show the curve shifted to the right c) the R state is stabilized d)the rate of the reaction is diminishedarrow_forward
- For the equations below, which molecule is oxidized and which is reduced? H2S + NAD+ --> NADH + S + H+ G3P + NAD+ + Pi --> 1,3dPGA + NADHarrow_forwardDiscuss the relationship between redox potentials E0’ and the organization of the components of the electron transport chain. Be specific, i.e., use data/actual values to back up your discussion. a) What are the values of E0’ for all the components of the ETS? b)How are the E0’ related to ∆G values? c) How do the values of E0’ vary among the participants in the ETS relative to their position in the ETS?arrow_forwardThe oxidation of NADH is favorable because it involves: a) Separation of like charges. b) Conversion of non-polar to polar bonds. c) Increased resonance. d) Conversion of liquid to gas.arrow_forward
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