Concept explainers
(a)
Interpretation:
Whether the statement “CoA, but not ACP, contains a 2-ethanethiol structural subunit” about the molecules CoA and ACP is true or false has to be identified.
Concept introduction:
The β-oxidation pathway is defined as a repetitive series of four biochemical reactions in which acyl CoA is degraded to acetyl CoA by the removal of two carbon atoms at a time. NADH and FADH2 are also produced in this pathway.
Lipogenesis is the process employed for the synthesis of fatty acid. The starting precursor for the synthesis is acetyl CoA. The enzyme employed for the process is fatty acid synthase. It is a multienzyme complex that ties the reaction responsible for the synthesis of fatty acid.
The protein carrier in the β-oxidation pathway is CoA and protein carrier in lipogenesis is ACP.
(b)
Interpretation:
Whether the statement “ACP, but not CoA, contains a pantothenic acid structural subunit” about the molecules CoA and ACP is true or false has to be identified.
Concept introduction:
The β-oxidation pathway is defined as a repetitive series of four biochemical reactions in which acyl CoA is degraded to acetyl CoA by the removal of two carbon atoms at a time. NADH and FADH2 are also produced in this pathway.
Lipogenesis is the process employed for the synthesis of fatty acid. The starting precursor for the synthesis is acetyl CoA. The enzyme employed for the process is fatty acid synthase. It is a multienzyme complex that ties the reaction responsible for the synthesis of fatty acid.
The protein carrier in the β-oxidation pathway is CoA and protein carrier in lipogenesis is ACP.
(c)
Interpretation:
Whether the statement “both CoA and ACP have an
Concept introduction:
The β-oxidation pathway is defined as a repetitive series of four biochemical reactions in which acyl CoA is degraded to acetyl CoA by the removal of two carbon atoms at a time. NADH and FADH2 are also produced in this pathway.
Lipogenesis is the process employed for the synthesis of fatty acid. The starting precursor for the synthesis is acetyl CoA. The enzyme employed for the process is fatty acid synthase. It is a multienzyme complex that ties the reaction responsible for the synthesis of fatty acid.
The protein carrier in the β-oxidation pathway is CoA and protein carrier in lipogenesis is ACP.
(d)
Interpretation:
Whether the statement “CoA is a much larger molecule than ACP” about the molecules CoA and ACP is true or false has to be identified.
Concept introduction:
The β-oxidation pathway is defined as a repetitive series of four biochemical reactions in which acyl CoA is degraded to acetyl CoA by the removal of two carbon atoms at a time. NADH and FADH2 are also produced in this pathway.
Lipogenesis is the process employed for the synthesis of fatty acid. The starting precursor for the synthesis is acetyl CoA. The enzyme employed for the process is fatty acid synthase. It is a multienzyme complex that ties the reaction responsible for the synthesis of fatty acid.
The protein carrier in the β-oxidation pathway is CoA and protein carrier in lipogenesis is ACP.
Want to see the full answer?
Check out a sample textbook solutionChapter 25 Solutions
Bundle: General, Organic, and Biological Chemistry, 7th + OWLv2 Quick Prep for General Chemistry, 4 terms (24 months) Printed Access Card
- Which of these reactions take place in both anaerobic and aerobic respiration? A. glycolysis B. citric acid cycle C. electron-transport chain D. acetyl-CoA formation E. all of the abovearrow_forwardwhat are the steps and turns for each one?arrow_forwardFor every one glucose molecules, how many high energy molecules are formed in citric acid cycle? A. 2 NADH, 0.5 FADH2, and 0.5 GTP B. 3 NADH, 1 FADH2, and 1 GTP C. 6 NADH, 2 FADH2, and 2 GTP D. 9 NADH, 3 FADH2, and 3 GTP E. None of the abovearrow_forward
- Which of the three common metabolic pathways for pyruvate is compatible with each of the following characterizations concerning the reactions that pyruvate undergoes? a. Acetaldehyde is an intermediate in this pathway b. An anaerobic pathway that does not function in humans c. An anaerobic pathway that does function in humans d. A C2 molecule is a product under aerobic reaction conditions for this pathwayarrow_forwardIf 2 monosaccharides undergo dehydration synthesis, what results? O2 separate compounds connected by an intermolecular force O2 separate compounds connected by a chemical bond 1 compound where the 2 cyclic portions are connected by an intermolecular force 1 compound where the 2 cyclic portions are connected by a chemical bondarrow_forward25. Under anaerobic conditions, yeast produces and alcohol during alcoholic fermentation a. lactate b. CO2 c. glucose d. acetyl CoAarrow_forward
- Vitamin C acts as a coenzyme of hydroxylase by: a. the increased probability that the phosphate group of ATP will be released b. the binding of magnesium to the enzyme. c. the donation of a hydroxyl group that allows the hydroxylase to change the shape of collagen d. collagen binding and crosslinking of individual collagen strandsarrow_forwardWhich of the following is TRUE regarding catabolic reactions: a. They require an input of energy to compensate for the overall increase in free energy b. They do not depend on enzymes c. They are endergonic d. They increase the entropy of the universe e. The synthesis of polypeptides from amino acids is an example of a catabolic reactionarrow_forwardOrder the steps of the endogenous pathway starting with VLDL in the liver. Question 99 options: excess LDL taken up by receptors in the liver LDL circulates to deliver cholesterol to peripheral cells After a meal, VLDL in liver packaged with trigs and cholesterol and sent into circulation IDL transported to liver and broken down into LDL VLDL interacts with LPL to release its fatty acids. Becomes IDLarrow_forward
- Consider the docosanoic acid, C21H43CO2H Label the alpha and beta Carbons. Draw each acyl CoA derived from this fatty acid. How many acetyl Co A molecules are formed by complete beta-oxidation? How many cycles of beta-oxidation are needed for complete oxidation? How many molecules of ATP are formed from the complete catabolism of this fatty acid? Show the complete computation. How many moles of ATP per gram of fatty acid is formed from the complete catabolism of the given fatty acid? What is the molar mass of the given fatty acid?arrow_forwardA molecule that moves electrons from the citric acid cycle to the electron-transport chain is A. tRNA. B. mRNA. C. ADP. D. NADH. E. pyruvic acid.arrow_forwardWhich statement is TRUE regarding ketone bodies? O Ketone bodies are only formed during times of starvation. Excess acetoacetate produced during ketone body production is mostly exhaled. O Ketone bodies can easily travel from one tissue to another in the body due to the preser Coenzyme A. O Ketone bodies tend to be formed when oxaloacetate concentrations are high. O Ketone bodies can be used as a source of acetyl-CoA in target tissues when blood glucosarrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher: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