Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 24, Problem 6RQ
The Krebs cycle converts ________ through a cycle of reactions. In the process, ATP, ________, and ________ are produced.
- acetyl CoA; FAD, NAD
- acetyl CoA; FADH2; NADH
- pyruvate; NAD; FADH2
- pyruvate; oxygen; oxaloacetate
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A series of chemical reactions convert a polypeptide into 13 acetyl CoAs. This acetyl
COA goes into the citric acid cycle and then all of the NADH and FADH2 produced
are covnerted to ATP by oxidative phosphorylation.
How many total ATP is produced from this acetyl COA including the citric acid cycle
and oxidative phosphorylation?
Your Answer:
Krebs cycle products/acetyl CoA molecule are
4 CO2, 3 NADH, 1 FADH2, 2 ATP
4 CO2, 6 NADH, 2 FADH2, 2 ATP
2 CO2, 3 NADH, 1 FADH2, 1 ATP
6 CO2, 6 NADH, 2 FADH2, 4 ATP
The high energy electrons that are stripped off acetyl CoA in _________are taken to the electron transport chain. As they move through the electron transport chain, these high energy electrons are pulled to lower and lower energy levels, finally combining with ________,
chemiosmotic phosphorylation; oxygen
the fermentation pathways; carbon dioxide
ATP synthase; nitrogen
the citric acid cycle; oxygen
Chapter 24 Solutions
Anatomy & Physiology
Ch. 24 - A monosaccharide is formed from a polysaccharide...Ch. 24 - If anabolic reactions exceed catabolic reactions,...Ch. 24 - When NAD becomes NADH, the coenzyme has been...Ch. 24 - Anabolic reactions use energy by ________. turning...Ch. 24 - Glycolysis results in the production of two...Ch. 24 - The Krebs cycle converts ________ through a cycle...Ch. 24 - Which pathway produces the most ATP molecules?...Ch. 24 - Aerobic cellular respiration results in the...Ch. 24 - When NAD+ becomes NADH, the coenzyme has been...Ch. 24 - Lipids in the diet can be ________. broken down...
Ch. 24 - The gallbladder provides ________ that aid(s) in...Ch. 24 - Triglycerides are transported by chylomicrons...Ch. 24 - Which molecule produces the most ATP?...Ch. 24 - Which molecules can enter the Krebs cycle?...Ch. 24 - Acetyl CoA can be converted to all of the...Ch. 24 - Digestion of proteins begins in the ________ where...Ch. 24 - Amino acids are needed to ________. build new...Ch. 24 - If an amino acid is not used to create new...Ch. 24 - During the absorptive state, glucose levels are...Ch. 24 - Staivation sets in after 3 to 4 days without food....Ch. 24 - The postabsorptive state relies on stores of...Ch. 24 - The bodys temperature is controlled by the...Ch. 24 - Fever increases the body temperature and can...Ch. 24 - The heat you feel on your chair when you stand up...Ch. 24 - A crowded room warms up through the mechanism of...Ch. 24 - A deficiency in vitamin A can result in ________....Ch. 24 - Rickets results in improper bone development in...Ch. 24 - Consuming which type of food will help the most...Ch. 24 - Which of the following is stored in the body?...Ch. 24 - Describe how metabolism can be altered.Ch. 24 - Describe how Addisons disease can be treated.Ch. 24 - Explain how glucose is metabolized to yield ATP.Ch. 24 - Insulin is released when food is ingested and...Ch. 24 - Discuss how carbohydrates can be stored as fat.Ch. 24 - If a diabetics breath smeLls like alcohol, what...Ch. 24 - Amino acids are not stored in the body. Describe...Ch. 24 - Release of trypsin and chymotrypsin in their...Ch. 24 - In type II diabetes, insulin is produced but is...Ch. 24 - Ketone bodies are used as an alternative source of...Ch. 24 - How does vasoconstriction help increase the core...Ch. 24 - How can the ingestion of food increase the body...Ch. 24 - Weight loss and weight gain are complex processes....Ch. 24 - Some low-fat or non-fat foods contain a large...
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- The cholesterol synthesized by cells uses which component of the glycolytic pathway as a starting point? a. glucose b. acetyl CoA c. pyruvate d. carbon dioxidearrow_forwardWhat do the electrons added to NAD do? a. They become part of a fermentation pathway. b. They go to another pathway for ATP production. c. They energize the entry of the acetyl group into the citric acid cycle. d. They are converted into NADP.arrow_forwardIf TWO acetyl CoA enter the citric acid cycle, for each glucose we started with, then how many of each product listed below do we get. _____ ATP _____ NADH _____FADH2 _____ CO2arrow_forward
- The conversion of pyruvate to Acetyl-CoA involves an oxidative decarboxylation. Correct the path of the electrons through this mechanism: Pyruvate -> NAD -> lipoamide -> FAD -> TPParrow_forwardThe citric acid cycle consumes oxygen Group of answer choices True False Oxidative phosphorylation converts the phosphoryl-transfer potential of ATP into the electron transfer potential of NADH and FADH2 Group of answer choices True False Carbohydrate metabolism is the source of all acetyl CoA that enters the citric acid cycle Group of answer choices True Falsearrow_forwardWhat molecule forms when Acetyl-CoA enters the Krebs cycle? ATP pyruvic acid glucose citric acid isocitratearrow_forward
- Which of the following metabolic processes directly involve Acetyl Coa (both as an immediate reactant or a product)? (Select all that apply) PDH Gluconeogenesis Electron Transport Chain Krebs Cycle FA synthesis Glycolysis Pentose Phosphate Pathway FA breakdownarrow_forwardFor each Acetyl CoA that enters the Krebs Cycle and the products goes through the ETC creates____ATP. ( Explain well with proper step by step and type The answer.)arrow_forwardAcetyl CoA reacts with what molecule in which pathway to become citrate? O glycolysis, Malate O krebs cycle, pyruvate O Krebs cycle Isocitrate O Krebs cycle, Oxaloacetate Krebs cycle, Succinyl CoA O glycolysis, isocitrate O Krebs cycle, Oxalocitratearrow_forward
- Which of the following reactions/ pathways does NOT produce NADH? Payoff phase of glycolysis Oxidative deamination of glutamine β-oxidation of fatty acid Conversion of pyruvate to lactate Conversion of pyruvate to acetyl CoAarrow_forwardThe synthesis of acetyl-CoA from pyruvic acid serves as a bridge between which of the following pathways? glycolysis and the Krebs cycle the Entner-Douderoff pathway and the Krebs cycle CO glycolysis and fermentation glycolysis and the electron transport chain Krebs cycle and the electron transport chain uestion 21 the carbon dioxide produced during aerobic respiration is produced in the Krebs cyclearrow_forwardIn order for an adipose cell to synthesize decanoic acid, it will need substrates in the form of _______ ATP, _______ NADPH from the transport of citrate into the cytoplasm and the subsequent recycling of oxaloacetate, and _______ NADPH from the pentose phosphate pathway. You can ignore the ATP used to regenerate mitochondria oxaloacetate via pyruvate carboxylase.arrow_forward
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