Which of the following statements accurately describes differences in beta oxidation vs fatty acid biosynthesis? Check all that apply. Beta oxidation occurs in the matrix of the mitochondria and fatty acid synthesis occurs in the cytosol Electron carriers are needed in beta oxidation, yet no electron carriers are needed in fatty acid synthesis Carbon source for fatty acid synthase is tagged by ACP vs beta oxidation that uses CoA Beta oxidation utilizes electrons whereas fatty acid biosynthesis generates electrons

Which of the following statements accurately describes differences in beta oxidation vs fatty acid biosynthesis? Check all that apply. Beta oxidation occurs in the matrix of the mitochondria and fatty acid synthesis occurs in the cytosol Electron carriers are needed in beta oxidation, yet no electron carriers are needed in fatty acid synthesis Carbon source for fatty acid synthase is tagged by ACP vs beta oxidation that uses CoA Beta oxidation utilizes electrons whereas fatty acid biosynthesis generates electrons

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter19: The Tricarboxylic Acid Cycle

Section: Chapter Questions

Problem 21P: Complete oxidation of a 16-carbon fatty acid can yield 129 molecules of ATP Study Figure 19.2 and...

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Complete oxidation of a 16-carbon fatty acid can yield 129 molecules of ATP Study Figure 19.2 and determine how many ATP molecules would be generated if a 16-carbon fatly acid were metabolized solely by the TCA cycle, in the form of S acetyl-CoA molecules.
Which of the following statements is TRUE about fatty acid biosynthesis? Group of answer choices: NADH is used as the reducing equivalent in the process. Malonyl ACP is the donor of the acetyl group. The product detaches from the fatty acid synthase complex when the chain length is usually 18 carbons. Oxaloacetate carries acetyl CoA to the cytosol.
ATP levels are high in the liver, NADPH levels are low, but fat biosynthesis needs to happen. What is the function of the pentose phosphate pathway? Mode 1 - NADPH and ribose 5-phosphate are being generated Mode 2 - ribose 5-phosphate is needed, so only the non-oxidative portion is being used for carbon skeleton rearrangments Mode 3 - NADPH is needed, so oxidative portion is operating to make NADPH and non-oxidative portion is operating to regenerate glucose 6-phosphate Mode 4 - NADPH and ATP are needed, so oxidative portion makes NADPH, non-oxidative portion does carbon skeleton rearrangements to fuel glycolysis and make ATP
Which of the following statements is/are TRUE about fatty acid activation before β-oxidation? I. The process consumes energy equivalent to two moles of ATP. II. The fatty acid is activated by ATP to give a fatty acyl-CoA.
Fatty acid synthesis is largely the reverse of beta oxidation, yet there are some distinct differences. From the statements below, which of the following is inaccurateconcerning fatty acid metabolism? Both processes use mobile electron carriers Both beta oxidation and fatty acid synthase use a carrier group The first step in fatty acid degradation pathway and biosynthetic pathway are regulated C2 unit of acetyl moiety is used in both fatty acid degradation and fatty acid biosynthesis Both processes occur in a unique, specific location (Compartmentalization)
Which of the following statements is correct about oxidative pentose phosphate pathway? Group of answer choices It generates NADH It oxidizes NADPH to NADP+ The pathway supplies ribose 5-phosphate and NADPH in the quantities the cell requires Glucose 6-phosphatase catalyzes the rate-limiting reaction of the pathway
Which of the following statements concerning oxidative phosphorylation is false? Group of answer choices: The electron transport chain generates an electrochemical gradient that drives the production of ATP. ATP synthase with fewer subunits in its c ring will produce more ATP per proton. A “loose” β subunit of ATP synthase becomes a “tight” site as it produces ATP. When the supply of NADH and QH2 (ubiquinol) decreases, ATP synthase produces more ATP.
Which statement does NOT describe a general function of the pentose phosphate pathway? Group of answer choices The pentose phosphate pathway is used to produce NADPH for reductive biosynthesis in adipocytes. The pentose phosphate pathway allows for the entry of dietary pentose intermediates into the glycolytic pathway. The pentose phosphate pathway produces reduced molecules whose electrons may be shuttled to the mitochondria for oxidative phosphorylation. The pentose phosphate pathway allows for the conversion of hexoses into pentoses that may be used as precursors in the synthesis of nucleosides.
If carbohydrates are unavailable for cellular respiration, other organic molecules can be broken down and enter the cellular respiration process at the appropriate spot. Proteins can be broken down into a variety of amino acids. Some amino acids can be converted into glutamate which can then be converted into alpha ketoglutarate. State which steps of the cellular respiration pathway lead to the generation of the energy molecules. State the TOTAL number of ATP molecule the ONE of these converted alpha-ketoglutarate molecules can produce and explain how all the ATP molecules are generated.
ATP levels are high in the liver, NADPH levels are low, but fat biosynthesis needs to happen. What is the function of the pentose phosphate pathway? a. Mode 1 - NADPH and ribose 5-phosphate are being generated b. Mode 2 - ribose 5-phosphate is needed, so only the non-oxidative portion is being used for carbon skeleton rearrangments c. Mode 3 - NADPH is needed, so oxidative portion is operating to make NADPH and non-oxidative portion is operating to regenerate glucose 6-phosphate d. Mode 4 - NADPH and ATP are needed, so oxidative portion makes NADPH, non-oxidative portion does carbon skeleton rearrangements to fuel glycolysis and make ATP
For each of the steps below, choose (A) if the step pertains to b-oxidation, (B) if the step pertains to fatty acid synthesis, or (C) if the step is common to both processes. ______ Acetyl CoA is produced as a product.______ Activation (the committed step of the process) requires ATP hydrolysis. ______ Accumulated acetyl CoA serves as a substrate.______ The length of fatty acid carbon chain is modified in the mitochondria. ______ ACP acts as the acyl carrier.
The net ATP produced during a β-oxidation process is always less than two ATP because An ATP is converted to ADP during fatty acid activation ATP is consumed during acyl CoA shuttling An ATP is converted to AMP during fatty acid activation A NADH is produced in the cytosol