CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
12th Edition
ISBN: 9780136920335
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 5TYU
What is the oxidizing agent in the following reaction?
Pyruvate + NADH + H+ à Lactate + NAD+
(A) oxygen
(B) NADH
(C) lactate
(D) pyruvate
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List the following substances in order of their increasing oxidizing power: (a) acetoacetate, (b) cytochrome b (Fe3+, (c) NAD+, (d) SO42− , and (e) pyruvate.
By the reaction catalyzed by the pyruvate dehydrogenase complex:
a) NAD+ is oxidized to become NADH that is used later in the ETC to generate
ATPs
Ob) NAD+ is reduced to become NADH that is used later in the ETC to generate
ATPs
c) FAD is oxidized to become FADH2 that is used later in the ETC to generate
ATPs
O
d) FAD is reduced to become FADH2 that is used later in the ETC to generate
ATPs
e) A and C
f) B and D
(d)
||
CH3-C-
=2
CH3-C
O=
+ CO₂
2
Pyruvate
Acetate
The conversion of pyruvate to acetate represents
Consequently, the complete balanced reaction is
a reduction.
no change in oxidation state.
an oxidation.
Chapter 9 Solutions
CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
Ch. 9.1 - Compare and contrast aerobic and anaerobic...Ch. 9.1 - WHAT IF? If the following redox reaction...Ch. 9.2 - Prob. 1CCCh. 9.3 - Prob. 1CCCh. 9.3 - What process in your cells produce the CO2 that...Ch. 9.3 - Prob. 3CCCh. 9.4 - Prob. 1CCCh. 9.4 - WHAT IF? In the absence of O2 as in question 1,...Ch. 9.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 9.5 - Consider the NADH formed during glycolysis. What...
Ch. 9.5 - WHAT IF? A glucose-fed yeast cell is moved from...Ch. 9.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 9.6 - Prob. 2CCCh. 9.6 - Prob. 3CCCh. 9.6 - Prob. 4CCCh. 9 - Describe the difference between the two processes...Ch. 9 - Which reactions in glycolysis are the source of...Ch. 9 - What molecular products indicate the complete...Ch. 9 - Briefly explain the mechanism by which ATP...Ch. 9 - Prob. 9.5CRCh. 9 - Prob. 9.6CRCh. 9 - Level 1: Knowledge/Comprehension 1. The immediate...Ch. 9 - Prob. 2TYUCh. 9 - Prob. 3TYUCh. 9 - Prob. 4TYUCh. 9 - What is the oxidizing agent in the following...Ch. 9 - When electrons flow along the electron transport...Ch. 9 - Prob. 7TYUCh. 9 - Prob. 8TYUCh. 9 - Prob. 9TYUCh. 9 - Prob. 10TYUCh. 9 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 9 - DRAW IT The graph here shows the pH difference...Ch. 9 - EVOLUTION CONNECTION AIP synthases are found in...Ch. 9 - SCIENTIFIC INQUIRY In the 1930s, some physicians...Ch. 9 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 9 - SYNTHESIZE YOUR KNOWLEDGE Coenzyme Q (CoQ) is sold...
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- The values of the reduction potential (Eº') of the conjugated redox pairs NAD+/NADH and pyruvate / lactate are -0'32 V and -0'19 V respectively. a) Which of the two conjugated pairs has a greater tendency to lose electrons? Reason for it. b) What is the strongest oxidizing agent? Reason for it. c) If we start with 1M concentrations of each reagent and product at pH 7.0 in which sense the reaction will pass pyruvate + NADH + H+ ⇄ lactate + NAD+ d) What is the standard free energy variation (ΔGº’ at 25ºC) for the conversion of pyruvate to lactate? e) What is the equilibrium constant of this reaction?arrow_forwardWhat is this question?arrow_forwardIn the energy recovery phase of glycolysis, Glyceraldehyde 3-p reacts with NAD+ In this reaction, which will be oxidized, and which will be reduced. In simple terms, what does it mean when a chemical is oxidized, and what does it mean when a chemical is reduced?arrow_forward
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