The citric acid cycle, likewise recognized as the Kreb"s cycle, occurs within the mitochondria of eukaryotic cells. In prokaryotic cells, it occurs in the cytosol.
You are watching: In eukaryotic cells, glycolysis occurs in
Explanation:
The citric acid cycle takes location in the mitochondrial matrix.
Glycolysis takes location in the cytosol, and the electron transfer chain involves both the intermembrane space and also the inner mitochondrial membrane.
Pyruvate from glycolysis is transported right into the mitochondrial matrix for the citric acid cycle. Energy from the citric acid cycle allows protons to be pumped to the intermembrane area. The electron carry chain requires proteins alengthy the inner mitochondrial membrane, ultimately resulting in the activation of ATP synthase because of the influx of prolots alengthy their gradient.
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Example Inquiry #1 : Understanding The Citric Acid Cycle
A sample of rats were fed glucose
Possible Answers:
Correct answer:
Explanation:
In cellular respiration, glucose first undergoes glycolysis and is broken down into 2 pyruvate molecules. As the pyruvate passes through the citric acid cycle, three molecules of
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Example Concern #1 : Understanding The Citric Acid Cycle
Wbelow does the Krebs cycle take place?
Possible Answers:
Intermembrane room of the mitochondria
In the cytosol
On the inner membrane of the mitochondria
Mitochondrial matrix
Correct answer:
Mitochondrial matrix
Explanation:
The Krebs cycle takes area in the mitochondrial matrix. The assets of glycolysis, which takes area in the cytosol, are brought to the mitochondria for the Krebs cycle and electron move chain. The electron carriers created during the Krebs cycle (NADH and FADH2) are then used in the electron deliver chain, which takes area on the inner membrane of the mitochondria.
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Example Concern #51 : Cellular Respiration
Which of the following molecules is developed during the Krebs cycle?
I. FADH2
II. ATP
III. Acetyl-CoA
Possible Answers:
I only
I and also II
II and III
II only
Correct answer:
I and also II
Explanation:
A rotate of the Krebs cycle produces one ATP, three NADH, one FADH2, and 2 CO2.
Acetyl-CoA is not developed in the time of Krebs cycle. It is created from the decarboxylation of a pyruvate molecule, which occurs before the Krebs cycle can begin. Each turn of Krebs cycle is initiated by one acetyl-CoA molecule. Remember that tbelow are 2 acetyl-CoA produced from the 2 pyruvate molecules (end product of glycolysis). For eexceptionally glucose molecule, the Krebs cycle produces 2 cycles: 2 ATP, six NADH, two FADH2, and also 4 CO2.
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Example Concern #51 : Cellular Respiration
The proportion of carbons in one acetyl-CoA molecule to one glucose molecule is __________.
Possible Answers:
Correct answer:
Explanation:
Acetyl-CoA is the molecule that enters as the primary reactant in the Krebs cycle.
During glycolysis glucose is the main reactant. Glucose has six carbons. The procedure of glycolysis converts one molecule of glucose into 2 molecules of pyruvate via three carbons each. Pyruvate then undergoes a decarboxylation reactivity prior to entering the Krebs cycle. Each pyruvate loses one carbon to develop carbon dioxide throughout this reaction, via the finish product of acetyl-CoA. Acetyl-CoA is, thus, a two-carbon chain.
The proportion of carbon in acetyl-CoA to carbon in glucose is two-to-six, or 1:3.
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Example Question #7 : Understanding The Citric Acid Cycle
Under anaerobic conditions, a eukaryotic cell will certainly not undergo the Krebs cycle. Why is this?
Possible Answers:
Lack of NAD+ and FADH+
The reactant for the Krebs cycle is oxygen
The end product for the Krebs cycle is oxygen
Lack of NADH and also FADH2
Namong the various other answers
Correct answer:
Lack of NAD+ and also FADH+
Explanation:
The duty of the Krebs cycle is to produce the intermediates NADH and also FADH2, which will serve as electron donors in the electron transfer chain (ETC). At the very same time, the ETC creates NAD+ and FADH+ as byassets. The assets can then be turned about to proceed fueling the Krebs cycle. Because the ETC will certainly not function in an anaerobic environment, neither will the Krebs cycle. The reactants will not be replenimelted, and the cycle will be unable to continue.
Oxygen is not directly associated as a reactant or product of the Krebs cycle. Oxygen is just directly provided as an electron receptor in the electron carry chain.
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Example Concern #1 : Understanding The Citric Acid Cycle
Which of the adhering to is not a product developed during the citric acid cycle?
Possible Answers:
H+
GTP
FADH2
NAD+
CO2
Correct answer:
NAD+
Explanation:
NAD+ and FADH are used as reactants in the citric acid cycle to make NADH and FADH2, which are supplied in the electron move chain to transform extra ADP right into ATP. All of the other selections are products in the citric acid cyclce. Proloads (H+) are a byproduct when NAD+ is converted to NADH. Carbon dioxide (CO2) is produced throughout carbohydprice conversions in the cycle. One GTP molecule is developed by the cycle, and has practically equivalent power to ATP.
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Example Question #51 : Cellular Respiration
Which of the complying with is an instance of an anabolic reaction?
Possible Answers:
Glucose-6-phosphate being isomerized to create fructose-6-phosphate
Citprice being converted to ketoglutarate
Acetyl CoA combining through oxaloacetate to create citrate
Glucose being converted to two pyruvate molecules
Correct answer:
Acetyl CoA combining through oxaloacetate to develop citrate
Explanation:
An anabolic reactivity is one in which bigger molecules are made from combining smaller molecules. Even without discovering the precise mechanics of the reactions given in the answer selections, we understand that we are searching for a reaction in which multiple molecules incorporate to develop a single molecule.
Out of the choices, tbelow is just one time wright here a larger molecule is made by the combination of two smaller ones: when acetyl CoA (2 carbons) and also oxaloacetate (4 carbons) come together in order to produce citrate (6 carbons).
See more: Why Does The Author Use Only Victor’S Information In This Passage?
The generation of pyruvate from glucose results in two smaller sized molecules from one larger molecule; this is a catalysis reactivity. The conversion of glucose-6-phosphate to fructose-6-phosphate is an isomerization reaction. The shift from citrate to ketoglutaprice is processed through an intermediate, however is inevitably a catalysis reactivity.
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Example Question #51 : Cellular Respiration
Which of the following processes occurs without oxygen?
Possible Answers:
Citric acid cycle
Fermentation
Krebs cycle
Electron transfer chain
Correct answer:
Fermentation
Explanation:
Fermentation is a catabolic procedure which does not call for oxygen. In contrast, Krebs cycle (citric acid cycle) and oxidative phosphorylation (chemiosmosis and also electron transport) perform usage oxygen. Aerobic respiration is much more reliable than anaerobic respiration in developing ATP.
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