Concept explainers
(a)
Interpretation:
Whether “acyl CoA is a product” in the mitochondrial matrix or in the mitochondrial intermembrane space in the carnitine shuttle system associated with the β-oxidation process has to be indicated.
Concept introduction:
The fatty acids are broken down to provide energy. The breakdown of fatty acids is a three parts process. In the first part, the fatty acid is activated. In the second part, the transportation of fatty acid into the mitochondrial matrix is facilitated by a shuttle mechanism. In the third part, the fatty acid is readily oxidized, cycling through a series of four reactions. In these series of reactions, acyl CoA is degraded to acetyl CoA. This pathway is termed as the β-oxidation pathway. Acetyl CoA, FADH2, and NADH are produced in this reaction.
The first stage of fatty acid oxidation is the activation of fatty acids in the outer mitochondrial membrane. The fatty acid is activated by CoA and ATP. The activated fatty acid-CoA is called acyl CoA.
The enzymes that are needed for the oxidation of fatty acid are located in the mitochondrial matrix. Acyl CoA cannot pass through the inner mitochondrial membrane to the mitochondrial matrix because it is too large. A shuttle mechanism that involves the molecule carnitine effects the entry of acyl CoA into the mitochondrial matrix.
(b)
Interpretation:
Whether “acyl carnitine enters the inner mitochondrial membrane” in the mitochondrial matrix or in the mitochondrial intermembrane space in the carnitine shuttle system associated with the β-oxidation process has to be indicated.
Concept introduction:
The fatty acids are broken down to provide energy. The breakdown of fatty acids is a three parts process. In the first part, the fatty acid is activated. In the second part, the transportation of fatty acid into the mitochondrial matrix is facilitated by a shuttle mechanism. In the third part, the fatty acid is readily oxidized, cycling through a series of four reactions. In these series of reactions, acyl CoA is degraded to acetyl CoA. This pathway is termed as the β-oxidation pathway. Acetyl CoA, FADH2, and NADH are produced in this reaction.
The enzymes that are needed for the oxidation of fatty acid are located in the mitochondrial matrix. Acyl CoA cannot pass through the inner mitochondrial membrane to the mitochondrial matrix because it is too large. A shuttle mechanism that involves the molecule carnitine effects the entry of acyl CoA into the mitochondrial matrix.
(c)
Interpretation:
Whether “acyl carnitine is converted to carnitine” in the mitochondrial matrix or in the mitochondrial intermembrane space in the carnitine shuttle system associated with the β-oxidation process has to be indicated.
Concept introduction:
The fatty acids are broken down to provide energy. The breakdown of fatty acids is a three parts process. In the first part, the fatty acid is activated. In the second part, the transportation of fatty acid into the mitochondrial matrix is facilitated by a shuttle mechanism. In the third part, the fatty acid is readily oxidized, cycling through a series of four reactions. In these series of reactions, acyl CoA is degraded to acetyl CoA. This pathway is termed as the β-oxidation pathway. Acetyl CoA, FADH2, and NADH are produced in this reaction.
The enzymes that are needed for the oxidation of fatty acid are located in the mitochondrial matrix. Acyl CoA cannot pass through the inner mitochondrial membrane to the mitochondrial matrix because it is too large. A shuttle mechanism that involves the molecule carnitine effects the entry of acyl CoA into the mitochondrial matrix.
(d)
Interpretation:
Whether “coenzyme A is a product” in the mitochondrial matrix or in the mitochondrial intermembrane space in the carnitine shuttle system associated with the β-oxidation process has to be indicated.
Concept introduction:
The fatty acids are broken down to provide energy. The breakdown of fatty acids is a three parts process. In the first part, the fatty acid is activated. In the second part, the transportation of fatty acid into the mitochondrial matrix is facilitated by a shuttle mechanism. In the third part, the fatty acid is readily oxidized, cycling through a series of four reactions. In these series of reactions, acyl CoA is degraded to acetyl CoA. This pathway is termed as the β-oxidation pathway. Acetyl CoA, FADH2, and NADH are produced in this reaction.
The enzymes that are needed for the oxidation of fatty acid are located in the mitochondrial matrix. Acyl CoA cannot pass through the inner mitochondrial membrane to the mitochondrial matrix because it is too large. A shuttle mechanism that involves the molecule carnitine effects the entry of acyl CoA into the mitochondrial matrix.
Want to see the full answer?
Check out a sample textbook solutionChapter 25 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- potential energy Br b) Translate the Newman projection below to its wedge-and-dash drawing. F H. OH CH3 CI c) Isopentane (2-methylbutane) is a compound containing a branched carbon chain. Draw a Newman projection of six conformations about the C2-C3 bond of isopentane. On the curve of potential energy versus angle of internal rotation for isopentane, label each energy maximum and minimum with one of the conformations. 0° 。 F A B D C angle of internal rotation E F 360° (=0°) JDownlarrow_forwardQ7: Identify the functional groups in these molecules a) CH 3 b) Aspirin: HO 'N' Capsaicin HO O CH3 CH 3arrow_forwardQ2: Name the following alkanesarrow_forward
- 1. Complete the following table in your laboratory notebook. Substance Formula Methanol CH3OH Ethanol C2H5OH 1-Propanol C3H7OH 1-Butanol C4H9OH Pentane C5H12 Hexane C6H14 Water H₂O Acetone C3H60 Structural Formula Molecular Weight (g/mol) Hydrogen Bond (Yes or No)arrow_forwardQ1: Compare the relative acidity in each pair of compounds. Briefly explain. (a) CH3OH vs NH 3 (b) HF vs CH3COOH (c) NH3 vs CH4 (d) HCI vs HI (e) CH3COOH vs CH3SH (f) H₂C=CH2 vs CH3 CH3 (g) compare the acidity of the two bolded hydrogens O. H N- (h) compare the acidity of the two bolded hydrogens, draw resonance structures to explain H H Harrow_forwardQ3: Rank the following molecules in order of decreasing boiling point: (a) 3-methylheptane; (b) octane; (c) 2,4-dimethylhexane; (d) 2,2,4-trimethylpentane.arrow_forward
- Q5: Conformations of Alkanes a) Draw a Newman Projection of the compound below about the C2-C3 bond. H3C Cli... H IIIH Br CH3arrow_forwardThe ability of atoms to associate with each other depends ona) the electronic structure and its spatial orientation.b) the electron affinity.c) The other two answers are correct.arrow_forwardWhat is the final volume after you reach the final temperature? I put 1.73 but the answer is wrong not sure why The initial volume of gas is 1.60 LL , the initial temperature of the gas is 23.0 °C°C , and the system is in equilibrium with an external pressure of 1.2 bar (given by the sum of a 1 bar atmospheric pressure and a 0.2 bar pressure due to a brick that rests on top of the piston). Then, as you did in Exercise 1, you heat the gas slowly until the temperature reaches 48.2 °Carrow_forward
- Q4: Identify the type of Carbon ( methyl, primary, secondary, etc. ) indicated by this arrow.arrow_forwardQ3: Curved Arrows, Lewis Acids & Bases, Nucleophiles and Electrophiles Considering the following reactions: a) Predict the products to complete the reactions. b) Use curved electron-pushing arrows to show the mechanism for the reaction in the forward direction. Redraw some of the compounds to explicitly illustrate all bonds that are broken and all bonds that are formed. c) Label Lewis acids and bases, nucleophiles and electrophiles in the reactions. A. S + AICI 3 B. + H₂Oarrow_forward3. A thermometer is placed in a test tube of chipped ice at -5.0 °C. The temperature is recorded at the time intervals shown below until room temperature is reached. Plot the data given below on graph paper and explain all flat, horizontal portions of the curve. Plot time on the X-axis! Time (min) Temperature (°C) 0 -5.0 2 -2.5 4 -1.0 6 0.0 10 0.0 15 0.0 20 0.0 25 0.0 30 1.5 35 4.0 40 8.0 45 11.5 50 15.0 55 17.5 60 19.0 65 20.0 70 20.0 75 20.0 80 20.0arrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningGeneral, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning