Anatomy & Physiology: An Integrative Approach
2nd Edition
ISBN: 9780078024283
Author: Michael McKinley Dr., Valerie O'Loughlin, Theresa Bidle
Publisher: McGraw-Hill Education
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Chapter 3.4, Problem 27WDYL
Summary Introduction
To determine:
The molecules into which pyruvate is converted when there is insufficient oxygen and to explain the reason for its occurrence.
Concept introduction:
The food contains large glucose
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Pyruvate generated by glycolysis under anaerobic conditions is converted tolactate or ethanol. It may seem this is a waste of energy, but it is in factcritical to survival for cells exposed to oxygen limiting conditions. Explain whythis is true.
Ethanol is oxidized in the liver to form acetate, which is then converted to acetyl-CoA. Determine how many molecules of ATP are produced from 1 mol of ethanol. (Note that 2 mol of NADH are produced when ethanol is oxidized to form acetate.)
The end product of glycolysis, pyruvate, cannot enter as such into the citric acid cycle. Which process converts this C3 compound to a C2 compound?
Chapter 3 Solutions
Anatomy & Physiology: An Integrative Approach
Ch. 3.1 - Both the movement of Na+ down its concentration...Ch. 3.1 - Muscle contraction is an example of what form of...Ch. 3.1 - Prob. 3WDYLCh. 3.2 - Prob. 4WDYLCh. 3.2 - For a biochemical reaction that involves simple...Ch. 3.2 - What molecule is formed from exergonic reactions...Ch. 3.2 - Explain what occurs when the equilibrium is...Ch. 3.2 - Explain the effect a fever would have on chemical...Ch. 3.2 - What is the relationship of enzymes and activation...Ch. 3.3 - What is the active site of an enzyme and how does...
Ch. 3.3 - What is the mechanism of enzyme action, including...Ch. 3.3 - Explain how enzymes are generally named.Ch. 3.3 - How do changes in substrate concentration,...Ch. 3.3 - How are enzymes regulated through competitive and...Ch. 3.3 - Prob. 15WDYLCh. 3.3 - Prob. 16WDYLCh. 3.4 - Prob. 17WDYLCh. 3.4 - Prob. 18WDYLCh. 3.4 - Prob. 19WDYLCh. 3.4 - Prob. 20WDYLCh. 3.4 - Prob. 21WDYLCh. 3.4 - Prob. 22WDYLCh. 3.4 - Prob. 23WDYLCh. 3.4 - Prob. 24WDYLCh. 3.4 - Prob. 25WDYLCh. 3.4 - Prob. 26WDYLCh. 3.4 - Prob. 27WDYLCh. 3.4 - Prob. 28WDYLCh. 3 - Energy in ATP is used to power skeletal muscle...Ch. 3 - Prob. 2DYKBCh. 3 - Prob. 3DYKBCh. 3 - ATP inhibits phosphofructokinase by binding to an...Ch. 3 - All of the following are accurate about enzymes...Ch. 3 - Prob. 6DYKBCh. 3 - Prob. 7DYKBCh. 3 - All stages of cellular respiration are decreased...Ch. 3 - Prob. 9DYKBCh. 3 - Prob. 10DYKBCh. 3 - Prob. 11DYKBCh. 3 - Describe the different ways of classifying...Ch. 3 - Prob. 13DYKBCh. 3 - Describe the structure and mechanism of enzymes.Ch. 3 - Prob. 15DYKBCh. 3 - Prob. 16DYKBCh. 3 - In general terms, explain the fate of pyruvate if...Ch. 3 - Describe how oxygen becomes part of water during...Ch. 3 - Identify the source of carbon in carbon dioxide.Ch. 3 - Prob. 20DYKBCh. 3 - Prob. 1CALCh. 3 - Prob. 2CALCh. 3 - Another challenge to a patient with impaired...Ch. 3 - Prob. 4CALCh. 3 - Prob. 5CALCh. 3 - Prob. 1CSLCh. 3 - Prob. 2CSLCh. 3 - What occurs to the amount of product formed in a...
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- threose-4 phosphate (a 4 carbon aldose) is fed into glycolysis after a decarboxylation reaction that uses an NAD+ to generate a 3 carbon aldose. How many ATP and NADH are generated by breaking down this molecule to pyruvate?arrow_forwardWhat is the main purpose and importance of pyruvate oxidation in the cellular respiration?arrow_forwardCytochrome c may associate with cardiolipin (diphosphatidylglycerol) in the inner mitochondrial membrane. What sort of intermolecular forces are likely to be involved in this association?arrow_forward
- Does oxidase, catalyzes the oxidation of molecular oxygen? True or Falsearrow_forwardThe citric acid cycle generates NADH and FADH2, which are then used in the process of oxidative phosphorylation to make ATP. If the citric acid cycle (which does not use oxygen) and oxidative phosphorylation are separate processes, as they are, then why is it that the citric acid cycle stops almost immediately when O2 is removed?arrow_forwardHow much ATP would be generated by having one molecule of oxaloacetate being completely oxidized to CO2 by oxidative phosphorylation? Assume all necessary intermediates and electron carriers are present to carry out the reactions.arrow_forward
- Pyruvate can be converted into two different products depending on whether oxygen is readily available or not. Under conditions of strenuous activity (anaerobic) the product is: аcetyl CoA pyruvate lactate CO2arrow_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_forwardAssuming that the glycerol 3-phosphate shuttle is operative, a complete oxidation of three molecules of glucose (by a eukaryotic cell) into carbon dioxide and water would produce approximately ATP molecules via oxidative phosphorylation only. (Consider NADH = 2.5 ATP and FADH2 = 1.5 ATP)arrow_forward
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