Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433769
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 7.5, Problem 1CC
Summary Introduction
To determine:
The final acceptor of electron from NADH during aerobic and anaerobic respiration.
Concept introduction:
The NADH produced in glycolysis is a reducing agent. It donates an electron and reduces a compound and gets oxidized it turn. It is used as a reducing agent in both the types of respiration.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Organisms growing anaerobically cannot perform glycolysis for long without
reducing the pyruvate from glycolysis into another compound, most commonly to
lactate or to ethanol plus CO2.
Which of the following provides the best explanation for sustaining anaerobic
glycolysis?
O Lactic acid has to be reduced to regenerate NADH
Pyruvate has to be reduced to regenerate NADH
Pyruvate has to be reduced to regenerate NAD+
Lactic acid has to be reduced to regenerate NAD+
How many ATP or NADH molecules are produced or required in each of the following steps in glycolysis?
Match the words in the left column to the appropriate blanks in the sentences on the right.
zero
one
two
produced
required
In the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate,
NADH molecules are
In the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate,
NADH molecules are
In the conversion of phosphoenolpyruvate to pyruvate
molecules are
ATP and
Reset
ATP and
ATP and
Help
NADH
In some tissues, glucose 6-phosphate is oxidized to pentose phosphates by the pentose
phosphate pathway.
a) Which tissues prefer this pathway and why? Explain in detail.
b) Due to the fact that glucose 6-phosphate is also an intermediate for the glycolysis pathway,
the regulation of glycolysis and pentose phosphate pathway is very important. NADPH plays a
crucial role in partitioning of glucose 6-phosphate between glycolysis and the pentose
phosphate pathway. Explain this role of NADPH in detail.
Chapter 7 Solutions
Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd 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
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- a) Using full chemical structures of substrates and products, draw the two possible pyruvate reduction pathways that regenerate NAD+ from NADH in the absence of oxygen gas. Give names of all compounds and enzymes involved. b) Draw the step in glycolysis that requires at least one of the above pathways to be functional in the absence of oxygen. Give names of all compounds and enzymes involved.arrow_forwardIn one of the steps of glycolysis, the enzyme pyruvate kinase catalyzes the conversion of phosphoenolpyruvate to pyruvate; the phosphate group from phosphoenolpyruvate is transferred to ADP to form ATP during the reaction. This process is an example of: A) O ATP synthesis by substrate-level phosphorylation B) O coupling an energy releasing process to an energy requiring process C) O oxidative phosphorylation D) OB and C are correct E) OA and B are correctarrow_forwardWhat is the process that sustains the redox balance of glycolysis under aerobic conditions? transport of lactate from the cell regeneration of NAD* in the citric acid cycle formation of NADH in the reaction of glyceraldehyde 3-phosphate dehydrogenase regeneration of NAD* in fermentation processes regeneration of NAD* in the mitochondrial electron-transport chainarrow_forward
- Consider the steps of the krebs cycle and electron carrier chain and answer: a) How many ATPs are produced from 10 Pyruvato molecules? b) How many ATPs are produced from 12 Acetyl CoA molecules?arrow_forwardDraw OUT THE arrow pushing reaction mechanism for the following steps of glycolysis: SHOW/IDENTIFY the arrow pushing mechanism in at least 2 steps. CH,OPO CH,OH hexokinase 2+ H H H H H H ОН + ATP OH H ADP + H+ H ОН + НО HO OH H ОН H ОН Glucose-6-phosphate (G6P) Glucosearrow_forwardConcerning the use of pyruvate when ratio of NADH/NAD+ is low, what is the fate of the carbon labeled in pyruvate when metabolized under these conditions? a) Production of glucose b) Oxidation to CO2 via the TCA cycle c) Conversion to pyruvate to generate oxaloacetate to move electrons to the cytosol via the malate shuttle d) Pyruvate is never metabolized by the cell, instead pyruvate is converted to lactate and solely exported for the Cori cycle and dependent on the liver to recycle the carbon skeletonarrow_forward
- How many molecules of NADH are produced if 12 molecules of glucose enter the glycolytic pathway?arrow_forwardConsider the net summary equation for glycolysis. Suppose 13 molecules of glucose enter glycolysis. Calculate the number of molecules produced or used (a-d) upon completion of glycolysis utilizing all 13 glucose molecules. (a) # P; used (b) # pyruvates produced (c) # NADH produced (d) #ADP used.arrow_forwardUnder anaerobic conditions, pyruvate will be converted to lactic acid. Why does this occur? To convert NADH to NAD* to feed back into glycolysis To supply the glycolysis reaction glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate with needed electrons in the form of NADH Because lactic acid can be converted to glucose to feed back into glycolysis Because lactic acid is needed to resupply glycolysis with electrons Oarrow_forward
- What is the net yield of ATP during homolactic, acetate, and butyrate fermentations? How do these yields compare to aerobic respiration in terms of both quantity and mechanism of phosphorylation?arrow_forwardWhich of the following statements about the pentose phosphate pathway (PPP) is true? (A) The purpose of the pentose phosphate pathway is to produce NADH for use in anabolic pathways and ribose 6-phosphate for nucleotide synthesis.(B) The oxidative arm of the PPP produces (2) NADPH per glucose 6-phosphate that enters the pathway. (C) Phosphopentose isomerase converts the ribose 5-phosphate made in the oxidative arm of the PPP into ribulose 5-phosphate that is used to form the ribose sugar of nucleotides.(D) The non-oxidative arm of the PPP interconverts between ribose 5-phosphate and a variety of intermediates of b-oxidation. (E) One of the functions of the PPP is to provide NADPH that inhibits glutathione reductase so that it cannot oxidatively damage RBCs.arrow_forwardHow many net molecules of ATP and NADH are produced in "anaerobic glycolysis" (glycolysis + fermentation) starting from 1 molecule of fructose 1,6-bisphosphate and ending with 2 molecules of lactate? (Reminder: you are starting with one molecule of fructose 1,6-bisphosphate in this problem! Not from glucose!)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Biochemical Tests-Part 1; Author: Southern Stacker;https://www.youtube.com/watch?v=a-i9vANfQWQ;License: Standard Youtube License