Domanda del libro di testo
After running a mile, you stop and breathe heavily for a short period due to oxygen debt. Why do you need to breathe so heavily? (Hint: Look up “oxygen debt” on the Web. Which metabolic pathway requires oxygen?)
1013
views
Ch.21 The Generation of Biochemical Energy
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 21, Problema 83
The mitochondrion pumps H+ from the matrix into the intermembrane space. Which region is more acidic, the matrix or the intermembrane space? Why?
Guida verificata passo dopo passo1
Understand the concept of pH and acidity: Acidity is determined by the concentration of hydrogen ions (H+). A region with a higher concentration of H+ ions is more acidic and has a lower pH value.
Recognize the role of the mitochondrion: The mitochondrion actively pumps H+ ions from the matrix into the intermembrane space during cellular respiration, specifically in the electron transport chain.
Compare the regions: Since H+ ions are being moved from the matrix to the intermembrane space, the intermembrane space will have a higher concentration of H+ ions compared to the matrix.
Conclude which region is more acidic: The intermembrane space is more acidic because it has a higher concentration of H+ ions, resulting in a lower pH compared to the matrix.
Explain the significance: This H+ gradient is crucial for ATP synthesis, as the flow of H+ back into the matrix through ATP synthase drives the production of ATP in the process of oxidative phosphorylation.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Mitochondrial Structure
The mitochondrion consists of two membranes: the outer membrane and the inner membrane, which encloses the mitochondrial matrix. The space between these membranes is known as the intermembrane space. Understanding this structure is crucial for analyzing how protons (H<sup>+</sup>) are transported and how this affects the acidity of different regions.
Video consigliato:
Percorso guidato
1:46
Structure of Mitochondria Concept 1
Proton Gradient and pH
A proton gradient is created when protons are pumped from the mitochondrial matrix into the intermembrane space, leading to a higher concentration of H<sup>+</sup> ions in the intermembrane space. This increase in proton concentration lowers the pH, making the intermembrane space more acidic compared to the matrix, which has a lower concentration of protons.
Video consigliato:
Percorso guidato
02:09pH and pOH Calculations
Acidity and pH Scale
Acidity is measured using the pH scale, where lower pH values indicate higher acidity. The pH scale ranges from 0 to 14, with values below 7 being acidic. In the context of the mitochondrion, the intermembrane space, having a higher concentration of protons due to the pumping action, will have a lower pH and thus be more acidic than the matrix.
Video consigliato:
Percorso guidato
02:33The pH Scale
Pratica correlata
Domanda del libro di testo
With what class of enzymes are the coenzymes NAD+ and FAD associated?
1536
views
Domanda del libro di testo
The citric acid cycle contains four 4-carbon dicarboxylic acids.
a. Name them.
705
views
Domanda del libro di testo
We talk of burning food in a combustion process, producing CO2 and H2O from food and O2. Explain how O2 is involved in the process although no O2 is directly involved in the citric acid cycle.
1039
views
Domanda del libro di testo
If you use a flame to burn a pile of glucose completely to give carbon dioxide and water, the overall reaction is identical to the metabolic oxidation of glucose. Explain the differences in the fate of the energy released in each case.
1129
views
Domanda del libro di testo
The citric acid cycle contains four 4-carbon dicarboxylic acids.
b. Arrange them in order from least oxidized to most oxidized.
609
views