Skip to main content
Ch.18 Metabolic Pathways and ATP Production
Timberlake - Chemistry: An Introduction to General, Organic, and Biological Chemistry 13th Edition
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTimberlake 13th EditionCh.18 Metabolic Pathways and ATP ProductionProblema 58a
Capitolo 18, Problema 58a

Lignoceric acid, CH3 ― (CH2)22 ― COOH, is a C24 fatty acid found in peanut oil in small amounts.
a. State the number of β oxidation cycles for the complete oxidation of lignoceric acid.

Guida verificata passo dopo passo
1
Step 1: Understand the structure of lignoceric acid. It is a fatty acid with the formula CH₃ ― (CH₂)₂₂ ― COOH, which means it has a total of 24 carbon atoms.
Step 2: Recall the process of β oxidation. In each cycle of β oxidation, two carbon atoms are removed from the fatty acid chain in the form of acetyl-CoA.
Step 3: Determine the number of β oxidation cycles required. Since lignoceric acid has 24 carbon atoms, the number of cycles can be calculated by dividing the total number of carbon atoms (24) by 2, and then subtracting 1 because the final two carbons are directly converted into acetyl-CoA without undergoing another cycle.
Step 4: Write the formula for the number of β oxidation cycles: \( \text{Number of cycles} = \frac{\text{Total carbon atoms}}{2} - 1 \). Substitute the value of 24 for the total carbon atoms.
Step 5: Perform the calculation using the formula to determine the number of β oxidation cycles for lignoceric acid.

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:
1m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Beta Oxidation

Beta oxidation is a metabolic process that breaks down fatty acids into acetyl-CoA units, which can then enter the citric acid cycle for energy production. Each cycle of beta oxidation shortens the fatty acid chain by two carbon atoms and produces one molecule of acetyl-CoA, along with NADH and FADH2, which are used in the electron transport chain.
Video consigliato:
Percorso guidato
02:32
Characteristics of Beta Particles

Fatty Acid Structure

Fatty acids are carboxylic acids with long hydrocarbon chains. The structure of lignoceric acid, a C24 fatty acid, indicates it has 24 carbon atoms, which influences the number of beta oxidation cycles it undergoes. The number of cycles is determined by the total number of carbon atoms in the fatty acid chain, as each cycle removes two carbon atoms.
Video consigliato:
Percorso guidato
0:55
Fatty Acids Example 1

Complete Oxidation

Complete oxidation of a fatty acid refers to the full breakdown of the fatty acid into carbon dioxide and water, releasing energy. For lignoceric acid, this involves multiple beta oxidation cycles followed by the entry of acetyl-CoA into the citric acid cycle, ultimately yielding ATP, the energy currency of the cell.
Video consigliato:
Percorso guidato
00:47
Complete Ionic Equations
Pratica correlata
Domanda del libro di testo

What is the ATP energy yield associated with each of the following? 

c. 2 pyruvate → 2 acetyl CoA + 2CO2

640
views
Domanda del libro di testo

Caprylic acid, CH3 ― (CH2)6 ― COOH, is a C8 fatty acid found in milk.

a. State the number of β oxidation cycles for the complete oxidation of caprylic acid.

967
views
Domanda del libro di testo

What is the ATP energy yield associated with each of the following?

a. FADH2 → FAD

728
views
Domanda del libro di testo

What are some conditions that characterize ketosis?

1048
views
Domanda del libro di testo

Consider the complete oxidation of palmitoleic acid, CH3 ― (CH2)5 ― CH = CH ― (CH2)7 ― COOH, which is a C16 monounsaturated fatty acid found in animal and vegetable oils..

a. How many cycles of β oxidation are needed?

1287
views
Domanda del libro di testo

Consider the complete oxidation of oleic acid, CH3 ― (CH2)7 ― CH = CH ― (CH2)7 ― COOH, which is a C18 monounsaturated fatty acid.

a. How many cycles of β oxidation are needed?

607
views