Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 7, Problem 8TYK
Summary Introduction
Introduction:
The process of breaking down of the glucose into two molecules of pyruvate is known as glycolysis. This cycle plays a vital role in the production of energy in the body. The pyruvate is then converted into acetyl CoA (coenzyme-A) and takes part in the Krebs’s cycle.
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the reaction catalyzed by glyceradehyde 3-phosphate dehydrigenase is based on NAD+ and a active site cysteine. Also another phosphate group is added. what is the reason for that?
a) because one ATP is consumed
b) an inorganic phosphate is activated for ATP synthesis
C) NADH can be recycld and than converted back to NAD+ for glycolysis
d) because one ATP is generated
Which of these is associated with production of ATP during glycolysis? (Select all that apply)
a) Conversion of 1,3-BPG to 3PG
b) Conversion of 1,3-BPG to 2,3-BPG
c) Conversion of PEP to pyruvate
d) Conversion of 2,3-BPG to 2PG
e) Phosphorylation of glucose
If the enzyme that catalyzed the reaction that converts pyruvate to acetyl-CoA and carbon dioxide is inhibited:
a.
the production of ATP would decreases but the production of electron carriers would be unaffected
b.
the concentration of pyruvate would decrease
c.
the citric acid cycle will not be affected
d.
ATP production in the electron transport chain/oxidative phosphorylation will increase
e.
the concentration of acetyl Co A would decrease
Chapter 7 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 7.1 - Prob. 1SBCh. 7.1 - Distinguish between cellular respiration and...Ch. 7.2 - Prob. 1SBCh. 7.2 - What is the redox reaction in glycolysis?Ch. 7.2 - How is ATP synthesized in glycolysis?Ch. 7.3 - Summarize the fate of pyruvate molecules produced...Ch. 7.4 - What distinguishes the four complexes of the...Ch. 7.4 - Prob. 2SBCh. 7.5 - Prob. 1SBCh. 7.5 - Prob. 2SB
Ch. 7.6 - Prob. 1SBCh. 7.6 - What are the types of molecules that are the...Ch. 7.6 - Prob. 3SBCh. 7 - What is the final acceptor for electrons in...Ch. 7 - Prob. 2TYKCh. 7 - Prob. 3TYKCh. 7 - Prob. 4TYKCh. 7 - Prob. 5TYKCh. 7 - Prob. 6TYKCh. 7 - Prob. 7TYKCh. 7 - Prob. 8TYKCh. 7 - Which of the following statements is false?...Ch. 7 - In the 1950s, a diet pill that had the effect of...Ch. 7 - Discuss Concepts Why do you think nucleic acids...Ch. 7 - A hospital patient was regularly found to be...Ch. 7 - 13. There are several ways to measure...Ch. 7 - Apply Evolutionary Thinking Which of the two...Ch. 7 - Prob. 1ITDCh. 7 - Prob. 2ITDCh. 7 - As CO2 concentrations increase in the atmosphere,...Ch. 7 - Prob. 4ITD
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- During cellular respiration, 60 molecules of CO2 were given off as waste. a. How many pyruvate molecules were produced in glycolysis? b. The total amount of ATP produced by complete cellular respiration would be? c. The amount of energy available (Net ATP) to cell as ATP would be?arrow_forwardWhat would most likely promote increased rates of glycolysis? Select one: a. a higher concentration of Na in the environment compared to cells b. a higher concentration of K in cells compared to the environment c. a high concentration of ATP in cells d. a low concentration of ATP in cells e. presence of oxygen in cellsarrow_forwardWhat effect will increasing the number of c subunits in ATP synthase have on the P:O ratio? A. It will increase for both NADH and FADH2. B. It will increase for NADH and decrease for FADH2. C. It will decrease for NADH and increase for FADH2. D. It will decrease for both NADH and FADH2. E. It will remain unchanged for both NADH and FADH2.arrow_forward
- a- Krebs cycle is the subsequent pathway of glycolysis. Although, pyruvate is the last product of glycolysis why the Krebs cycle does not initiate with pyruvate? b-Describe the roles of the NADH and FADH2 in glucose break down reactions.arrow_forwardThe enzyme Phosphofructokinase (PFK) is a key regulator of glycolysis. A) Does ATP bind the PFK allosteric siteor the active site? B) Does high amount of ATP in the cell activate or inhibit PFK? Why? C)What do you suppose happens to glucose if glycolysis is inhibited in the cell?arrow_forwardWhich of the following is FALSE about glycolysis? a. The pathway axidizes two moles of NADH to NAD* for each mole of glucose. b. The pathway requires two moles of ATP to get started catabolizing each mole of glucose. c. ADP is phosphorylated to ATP via substrate -level phosphorylation. d. The pattivay produces pyruvate as one of its products.arrow_forward
- Which of the following statements concerning ATP synthesis is NOT true? a. The open conformation of the ATP synthase is for releasing ATP. b. The gamma subunit in the stalk responds to the flow of H+ and rotates the assembly counterclockwise and thus change the conformations of the active site to synthesize ATP. c. The tight conformation of the ATP synthase is for converting ADP and phosphate to ATP. d. The loose conformation of the ATP synthase is for binding ADP and phosphate. e. Ten protons are required to catalyze the rotation of the subunits so that one ATP is synthesized. Clear my choicearrow_forwardWhich of the following steps occurs during the payoff phase of glycolysis? A. the conversion of phosphoenolpyruvate to pyruvate B. the conversion of fructose 6-phosphate to fructose 1,6-biphosphate C. the conversion of glucose 6-phosphate to fructose 6-phosphate D. the conversion of glucose to glucose 6-phosphatearrow_forwardWhat might you expect if a mutation caused the ATP-allosteric site on phosphofructokinase to be permanently inactive? a. Less glucose transported into the cell. b. No effect on ATP production. c. Decreased ATP production d. Excessive ATP production.arrow_forward
- Concerning the process of the aerobic fate of glucose oxidation, which of the following statements is false? a. The spontaneous movement of protons is coupled to the unfavorable movement of electrons through the electron transport chain b. Pyruvate is recognized by a pyruvate/proton symporter for movement into the matrix of the mitochondria c. The matrix of the mitochondria is more negative than the inner membrane space d. Mitochondria contain two membranes, only the inner mitochondrial membrane is highly selective for what passes across it e. The movement of protons through ATP synthase drive the production of ATParrow_forwardThe first half of glycolysis is referred to as the preparatory or investment phase because it involves: (Select all that apply!) a) formation of NADH b) conversion of glucose to pyruvate c) formation of G3P d) consumption of ATParrow_forwardShow how the pentose phosphate pathway, which is connected to the glycolytic pathway, can do the following. (a) Make both NADPH and pentose phosphates, in roughly equal amounts (b) Make mostly or only NADPH (c) Make mostly or only pentose phosphatesarrow_forward
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