Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 9, Problem 9TYPSS
Cyanide (C=N–) blocks complex IV of the electron transport chain. Suggest a hypothesis for what happens to the ETC when complex IV stops working. Your hypothesis should explain why cyanide poisoning in humans is fatal.
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Photosynthesis is defined as the chemical process, wherein carbon dioxide in the presence of water and radiant energy gets converted to glucose (chemical energy), giving out oxygen as byproducts. In the equation, the combining reactants and resulting products are expressed along with their respective numbers of molecules. Putting this in a simplified formula, the following equation represents this process.
CO2 + H2O + Light energy → C6H12O6 + O2
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Chapter 9 Solutions
Biological Science (7th Edition)
Ch. 9 - Where does the citric acid cycle occur in...Ch. 9 - 2. What does the chemiosmotic hypothesis claim?
a....Ch. 9 - 3. After glucose is fully oxidized by glycolysis,...Ch. 9 - Compare and contrast substrate-level...Ch. 9 - If you were to expose cells that are undergoing...Ch. 9 - In step 3 of the citric acid cycle, the enzyme...Ch. 9 - 8. Explain the relationship between electron...Ch. 9 - 9. Cyanide (C=N–) blocks complex IV of the...Ch. 9 - Prob. 13PIATCh. 9 - SOCIETY In the 1930s, DNP was introduced as a diet...
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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
- Which one of the following statements about coenzyme Q is not true? a. coenzyme Q is lipid-soluble b. coenzyme Q can accept one or two electrons c. conenzyme Q often diffuses in the membrane from one protein complex to another in its semiquinone form d. Coenzyme Q is one of the five electron carriers used in the electron transport chainarrow_forwardWhich of the following statements are true? Explain. I. ATP synthesis will cease to occur when the electron flow is blocked by cyanide. II. 2,4-DNP allows electron flow to continue in the ETC without the synthesis of ATP. III. -ΔG is the quantity that signifies that the reaction is SPONTANEOUS.arrow_forwardCytochrome B5 is one of many cytochrome molecules in Electron Transport Chain. How would electron transport be affected if the cell had a defective cytochrome B5 gene and did not produce functional cytochrome B5? (It will help to discuss the function of cytochromes in Electron Transport Chain in your answer!)arrow_forward
- In electron transfer, only the quinone portion of the ubiquinone undergoes oxidation-reduction; the isoprenoid side chain remains unchanged. What is the function of this chain?arrow_forwardTo learn more about the role of the electron transport chain in generating energy during respiration in this organism, you use two drugs. These drugs can each pick up electrons from specific intermediates in the pathway as shown above. You treat cells carrying out respiration with either a saturating dose of drug A or B, so that all the electrons which would normally continue along the pathway are captured by the drug in question. Complete the following table. In the presence of drug A, will the cells continue to consume O2? (yes or no), will the cells continue to produce CO2? (yes or no) In the presence of drug B, will the cells continue to consume O2? (yes or no), will the cells continue to produce CO2? (yes or no)arrow_forwardWhich of these molecules associated with electron transport is in the reduced state? Choose from the following: (A) cytochrome a3+++ (b) cytochrome a3++arrow_forward
- Consider the following reaction: glyceraldehyde-3-phosphate + NAD 1,3bisphosphoglycerate + NADH. In this reaction, glyceraldehyde-3-phosphate is ___________. This reaction takes place in ___________. Select one: a. reduced, electron transport chain b. reduced, Citric Acid Cycle c. oxidized, Citric Acid Cycle d. oxidized, electron transport chain e. reduced, Calvin Cyclearrow_forwardThe image below shows the citric acid cycle. Reactions (3) and (4) are referred to as "oxidative". What does this mean? Select the correct statement Dehydrogenation HO–CH Malate Hydration H₂O malate coo- dehydro- genase CH₂ 1/ COO 0-c-coo ÇOO™ Fumarate CH HC fumarase CH₂-COO™ Oxaloacetate FADH₂ Succinate succinate dehydrogenase Dehydrogenation CH₂-COO- CH ₂ COO™ CoA-SH Acetyl-CoA GTP (ATP) CH3-C-S-COA H₂O (5) Substrate-level phosphorylation succinyl-CoA synthetase citrate synthase Citric acid cycle Figure 16-7 Lehringer Brinciples of Biochemistry Fifth Edition Condensation NADH CH₂-COO™ CH₂ GDP C-S-COA (ADP) O + P₁ CoA-SH CH₂-COO™ HỌ—C—C00 2a CH₂-COO Dehydration Citrate H₂O CO2 aconitase a-ketoglutarate dehydrogenase CoA-SH CH₂-COO™ C-COO- -COO aconitase HO-C-H isocitrate dehydrogenase/ Coo- complex CH₂-COO CH₂ C=O COO™ H₂O Ho CH₂-COO™ Oxidative Succinyl-CoA decarboxylation H-C-COO cis-Aconitate CO₂ (2b) Hydration Isocitrate Oxidative decarboxylation a-ketoglutaratearrow_forwardThe unicellular fungus Saccharomyces cerevisiae is used in the food industry to ferment sugars. The rate of fermentation is measured by CO2 production. The addition of inorganic phosphate increases this rate.1. Why does the fermentation of sugars, such as glucose and fructose, depend upon the presence of Pi? Which glycolytic reactions require Pi? 2. Several glycolytic intermediates contain phosphate. Where did these groups come from during the reactions? How much Pi is required to generate one CO2? 3. Is CO2 generation the most reliable way to measure ethanol fermentation? Why or why not?arrow_forward
- The complex chemical reactions that occur in living organisms can sometimes be summarized with chemical equations. The overall process of photosynthesis and aerobic respiration can both be summarized in this way. For the following equations, first determine whether each is summarizing photosynthesis or aerobic respiration, and then click on each of the boxes below the equations and correctly label all of the reactants and products. The following equation summarizes the reactants and products of A. aerobic respiration B. Photosynthesisarrow_forwardPlease explainarrow_forwardElectrons are continuously transferred from higher-energy carriers to lower-energy carriers in the electron transport chain, yet somehow iron is utilized as an electron carrier multiple times. Choose the most likely reason why this is possible. The pH of complex II is slightly higher than the pH of complex III. The reduction potential of flavin mononucleotide (FMN) in complex I is higher than the reduction potential of iron. The redox potential of iron ions can be manipulated by their environment. For instance, the iron in an iron-sulfur cluster will have a different redox potential than the iron in a heme group. The electrons carried by NADH are higher energy than the electrons carried by FADH2.arrow_forward
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