The bridge between glycolysis and the citric acid (Krebs) cycle
... • noncovalent assembly of three different enzymes which catalyze successive steps in the conversion of pyruvate to acetyl-CoA • the active sites of all three enzymes are close to one another • the product of the first enzyme is the substrate for the second enzyme and is passed directly to the active ...
... • noncovalent assembly of three different enzymes which catalyze successive steps in the conversion of pyruvate to acetyl-CoA • the active sites of all three enzymes are close to one another • the product of the first enzyme is the substrate for the second enzyme and is passed directly to the active ...
How Cells Harvest Energy: Cellular Respiration
... ! For glycolysis to continue, NADH must be recycled to NAD+ by either: 1. Aerobic respiration ...
... ! For glycolysis to continue, NADH must be recycled to NAD+ by either: 1. Aerobic respiration ...
(pt=4) Label the following diagram with the following terms: ATP
... Make a sketch of a mitochondrial cross section. Indicate where glycolysis occurs, where ...
... Make a sketch of a mitochondrial cross section. Indicate where glycolysis occurs, where ...
Citric Acid Cycle Overview
... Acetyl CoA Cannot Fill Up CAC • A key branch point of human metabolism • Glucogenic vs. ketogenic • No net glucose from acetyl CoA ...
... Acetyl CoA Cannot Fill Up CAC • A key branch point of human metabolism • Glucogenic vs. ketogenic • No net glucose from acetyl CoA ...
CH 9 PowerPoint
... Nicotinamide adenine dinucleotide, NAD+, is a coenzyme found in all living cells. The compound is a dinucleotide, since it consists of two nucleotides joined through their phosphate groups: with one nucleotide containing an adenosine ring, and the other containing nicotinamide. In metabolism, NAD+ i ...
... Nicotinamide adenine dinucleotide, NAD+, is a coenzyme found in all living cells. The compound is a dinucleotide, since it consists of two nucleotides joined through their phosphate groups: with one nucleotide containing an adenosine ring, and the other containing nicotinamide. In metabolism, NAD+ i ...
NAME Chapter 9 VOCAB Cellular Respiration pp 220
... process that releases energy by breaking down glucose and other food molecules in the presence of oxygen FERMENTATION – process by which cells release energy in the absence of oxygen ELECTRON TRANSPORT CHAIN – series of proteins in which high energy electrons from the Krebs cycle are used to convert ...
... process that releases energy by breaking down glucose and other food molecules in the presence of oxygen FERMENTATION – process by which cells release energy in the absence of oxygen ELECTRON TRANSPORT CHAIN – series of proteins in which high energy electrons from the Krebs cycle are used to convert ...
Name ______ Period ______________ Date ______________
... 7. Why is the Krebs cycle also called the citric acid cycle? Because the first product of the cycle is citric acid 8. List the products of the Krebs cycle. CO2, ATP, NADH, FADH2 9. Briefly explain the electron transport chain reaction in the mitochondria and where it takes place. What fuels the elec ...
... 7. Why is the Krebs cycle also called the citric acid cycle? Because the first product of the cycle is citric acid 8. List the products of the Krebs cycle. CO2, ATP, NADH, FADH2 9. Briefly explain the electron transport chain reaction in the mitochondria and where it takes place. What fuels the elec ...
Oxidative Decarboxylation and Krebs Cycle
... phosphate (PLP: vit B6 derivative) as a coenzyme. The reaction is reversible ...
... phosphate (PLP: vit B6 derivative) as a coenzyme. The reaction is reversible ...
the Citric Acid cycle
... Most fuel molecules enter the cycle as acetyl coenzyme A. In Eukaryotes, the reactions of the citric acid cycle take place inside mitochondria. The only exception is succinate dehydrogenase, which is present in the inner mitochondrial membrane. The cycle is also an important source of precurso ...
... Most fuel molecules enter the cycle as acetyl coenzyme A. In Eukaryotes, the reactions of the citric acid cycle take place inside mitochondria. The only exception is succinate dehydrogenase, which is present in the inner mitochondrial membrane. The cycle is also an important source of precurso ...
Further Details of Mechanism
... Be a Multistep Catalyst • Oxaloacetate is regenerated • The cycle is a mechanism for oxidizing acetyl CoA to CO2 by NAD+ and Q • The cycle itself is not a pathway for a net degradation of any cycle intermediates • Cycle intermediates can be shared with other pathways, which may lead to a resupply or ...
... Be a Multistep Catalyst • Oxaloacetate is regenerated • The cycle is a mechanism for oxidizing acetyl CoA to CO2 by NAD+ and Q • The cycle itself is not a pathway for a net degradation of any cycle intermediates • Cycle intermediates can be shared with other pathways, which may lead to a resupply or ...
ENERGY FLOW WITHIN THE CELL (2) LEARNING OBJECTIVES
... CITRIC ACID CYCLE:- Also known as TCA cycle or tricarboxylic acid cycle or Krebs cycle. It is a cyclic process. The cycle involves a sequence of compounds interrelated by oxidation – reduction and other reactions which finally produce CO2 and H2O. It is a final common pathway of breakdown or catabol ...
... CITRIC ACID CYCLE:- Also known as TCA cycle or tricarboxylic acid cycle or Krebs cycle. It is a cyclic process. The cycle involves a sequence of compounds interrelated by oxidation – reduction and other reactions which finally produce CO2 and H2O. It is a final common pathway of breakdown or catabol ...
Cellular Respiration
... 6. Where does the second stage take place? 7. What does the term aerobic mean? ...
... 6. Where does the second stage take place? 7. What does the term aerobic mean? ...
Cellular Respiration
... After a cell goes through all of Glycolysis and The Krebs Cycle if there in no O2 around it will not go through the E.T.C. The first type of fermentation produces a chemical called Lactic Acid. Humans go through this type of fermentation when their O2 level is depleted. When you exercise you’re forc ...
... After a cell goes through all of Glycolysis and The Krebs Cycle if there in no O2 around it will not go through the E.T.C. The first type of fermentation produces a chemical called Lactic Acid. Humans go through this type of fermentation when their O2 level is depleted. When you exercise you’re forc ...
AP Biology Ch. 9 Fermentation and Quiz Ppt
... Yeast and many bacteria are facultative anaerobes, meaning that they can survive using either fermentation or cellular respiration In a facultative anaerobe, pyruvate is a fork in the metabolic road that leads to two alternative catabolic routes ...
... Yeast and many bacteria are facultative anaerobes, meaning that they can survive using either fermentation or cellular respiration In a facultative anaerobe, pyruvate is a fork in the metabolic road that leads to two alternative catabolic routes ...
Lecture 15 (Parker) - Department of Chemistry ::: CALTECH
... The citric acid cycle itself does not generate a large amount of ATP, instead it removes electrons from Acetyl CoA forming NADH and FADH2. These electron carriers yield nine ATP molecules when oxidized by oxidative phosphorylation. Electrons released in the re-oxidation of NADH and FADH2 flow throu ...
... The citric acid cycle itself does not generate a large amount of ATP, instead it removes electrons from Acetyl CoA forming NADH and FADH2. These electron carriers yield nine ATP molecules when oxidized by oxidative phosphorylation. Electrons released in the re-oxidation of NADH and FADH2 flow throu ...
5 Metabolism - bloodhounds Incorporated
... The final electron acceptor in the process of oxidative phosphorylation is A. B. C. D. ...
... The final electron acceptor in the process of oxidative phosphorylation is A. B. C. D. ...
presentation source
... • Alcohol fermentation yields ATP via substrate level phosphorylation only during glycolysis. ONLY 2 ATPs per glucose yielded • Aerobic respiration yields ATP via both substrate level phosphorylation and oxidative phosphorylation. Up to 30+ ATPs yielded per glucose! ...
... • Alcohol fermentation yields ATP via substrate level phosphorylation only during glycolysis. ONLY 2 ATPs per glucose yielded • Aerobic respiration yields ATP via both substrate level phosphorylation and oxidative phosphorylation. Up to 30+ ATPs yielded per glucose! ...
Acyl-CoA synthetases : Fatty acid +CoA + ATP → fatty acyl
... 8 actyl-CoA + 7 FADH2 + 7 NADH + 7 H+ ...
... 8 actyl-CoA + 7 FADH2 + 7 NADH + 7 H+ ...
Fundamentals of Biochemistry 2/e
... – Glucose oxidized – 2 NAD+ reduced to NADH – Electron transport Pyruvate – 2 molecules are produced – Complete oxidation to CO2 done in citric acid cycle ...
... – Glucose oxidized – 2 NAD+ reduced to NADH – Electron transport Pyruvate – 2 molecules are produced – Complete oxidation to CO2 done in citric acid cycle ...
SI Session 10-13-14 The molecule that functions as the reducing
... phosphate. D) has been reduced as a result of a redox reaction involving the loss of an inorganic phosphate. E) has less energy than before its phosphorylation and therefore less energy for cellular work. Products for oxidation of one pyruvate? Where does acetyl CoA accumulate? Starting with one mol ...
... phosphate. D) has been reduced as a result of a redox reaction involving the loss of an inorganic phosphate. E) has less energy than before its phosphorylation and therefore less energy for cellular work. Products for oxidation of one pyruvate? Where does acetyl CoA accumulate? Starting with one mol ...
Welcome to the basics lecture on cellular respiration
... will discuss this in more detail, plus give exceptions, when we talk in class. For now, you should just be able to follow the electrons from glucose, to NADH, to lactate. ...
... will discuss this in more detail, plus give exceptions, when we talk in class. For now, you should just be able to follow the electrons from glucose, to NADH, to lactate. ...
Chapter 9_ objectives
... In general terms, explain how the exergonic “slide” of electrons down the electron transport chain is coupled to the endergonic production of ATP by chemiosmosis. ...
... In general terms, explain how the exergonic “slide” of electrons down the electron transport chain is coupled to the endergonic production of ATP by chemiosmosis. ...
ADP, ATP and Cellular Respiration Powerpoint
... Occurs in matrix Pyruvic Acid (3C) is broken down and CO2 is released Acetyl-Coenzyme A (2C) combines with a (4C) to make citric acid (6C) in a cycle of steps More CO2 released ATP & NADH & FADH2 produced CoA reused each cycle ...
... Occurs in matrix Pyruvic Acid (3C) is broken down and CO2 is released Acetyl-Coenzyme A (2C) combines with a (4C) to make citric acid (6C) in a cycle of steps More CO2 released ATP & NADH & FADH2 produced CoA reused each cycle ...
Citric acid cycle
The citric acid cycle – also known as the tricarboxylic acid (TCA) cycle or the Krebs cycle – is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate derived from carbohydrates, fats and proteins into carbon dioxide and chemical energy in the form of adenosine triphosphate (ATP). In addition, the cycle provides precursors of certain amino acids as well as the reducing agent NADH that is used in numerous other biochemical reactions. Its central importance to many biochemical pathways suggests that it was one of the earliest established components of cellular metabolism and may have originated abiogenically.The name of this metabolic pathway is derived from citric acid (a type of tricarboxylic acid) that is consumed and then regenerated by this sequence of reactions to complete the cycle. In addition, the cycle consumes acetate (in the form of acetyl-CoA) and water, reduces NAD+ to NADH, and produces carbon dioxide as a waste byproduct. The NADH generated by the TCA cycle is fed into the oxidative phosphorylation (electron transport) pathway. The net result of these two closely linked pathways is the oxidation of nutrients to produce usable chemical energy in the form of ATP.In eukaryotic cells, the citric acid cycle occurs in the matrix of the mitochondrion. In prokaryotic cells, such as bacteria which lack mitochondria, the TCA reaction sequence is performed in the cytosol with the proton gradient for ATP production being across the cell's surface (plasma membrane) rather than the inner membrane of the mitochondrion.