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Bioenergetics and Metabolism
Bioenergetics and Metabolism

... What are the key regulated enzymes in citrate cycle? Isocitrate dehydrogenase - catalyzes the oxidative decarboxylation of isocitrate by transferring two electrons to NAD+ to form NADH, and in the process, releasing CO2, it is activated by ADP and Ca2+ and inhibited by NADH and ATP. α-ketoglutarate ...
IB BIO II Cell Respiration Van Roekel Cell Respiration Review
IB BIO II Cell Respiration Van Roekel Cell Respiration Review

... gradient, proton-motive force, ATP Synthase, etc) Chemiosmosis is the coupling of the electron transport chain with ATP synthase to provide a means for oxidative phosphorylation to occur. As the proteins in the electron transport chain accept electrons, they will pump hydrogen ions from the matrix t ...
PLANT PHYSIOLOGY LECTURE “AEROBIC PHASE OF
PLANT PHYSIOLOGY LECTURE “AEROBIC PHASE OF

... donor to cvtochrome c, gives values of 0.8 to 0.9. Results such as these (for both plant and animal mitochondria) have led to the general concept that there are three sites of energy conservation along the election transport chain, at complexes I, III, and IV. The experimental ADP:0 ratios agree qu ...
Pass Back Graded Work!
Pass Back Graded Work!

... Citric acid is used for many different reasons, including (but not limited to):  Citric acid is used as a flavoring in many preparations of Vitamin C, and has a wide variety of other uses. In industry, citric acid can be used to make good “natural” cleaners, though some may still contain chemicals ...
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WHAT SHOULD I KNOW ABOUT RESPIRATION NAME ANSWERS

... How many CO2 molecules are produced from one molecule of glucose? 1 glucose (C6H12O6) produces 6 CO2 molecules Compare the amount of ATP made during fermentation (without O 2) and cellular respiration (with O2) Fermentation = 2 ATP (produced during glycolysis) Compare the production of ATP’s during ...
26,6 Synthesis of omino ocids
26,6 Synthesis of omino ocids

... in the amount of acetyl CoA in the liver. Liver cells respond by using acetyl CoA produced in amino acid metabolism to make ketone bodies. The ketone bodies are transported to other tissues,where they are oxidized for energyproduction. S5mthesis of glycogen ...
Compare and Contrast table for Photosynthesis and Cellular
Compare and Contrast table for Photosynthesis and Cellular

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METABOLISM - Doctor Jade Main
METABOLISM - Doctor Jade Main

... • during cycle hydrogen atoms are removed from organic moleculestransferred to coenzymes • cycle begins & ends with same substrate: oxaloacetate (OAA) • acetyl CoA condenses with oxaloacetate- 4 carbon compoundcitrate-6 carbon compound • cycle continues around through 8 successive step • during st ...
Compare and Contrast table for Photosynthesis and Cellular
Compare and Contrast table for Photosynthesis and Cellular

... 7. Explain the difference between ADP and ATP? Which energy molecule provides more energy? 8. Name the pigment molecule absorbs the sunlight for the light dependent reaction? 9. Describe how light is absorbed at different wavelengths and why most plants are green. 10.Compare and contrast C3, C4 and ...
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File

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1. The table shows the number of carbon atoms contained in some
1. The table shows the number of carbon atoms contained in some

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Abstract_Metabolomic_RFMF
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... they are small compounds (between 100 and 1000 Da) found in organisms that have an important part in cells live and survival. They can be identified with different technics such as Nuclear Magnetic Resonance or Mass Spectrometry. Each of them is different at a biological level and can have a specifi ...
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... Respiration: (copy and label chemical equation): ...
Ch 6 Metabolism: Fueling Cell Growth
Ch 6 Metabolism: Fueling Cell Growth

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Ch 6 Metabolism: Fueling Cell Growth
Ch 6 Metabolism: Fueling Cell Growth

... Describe the chemical reactions of glycolysis. Explain the products of the Krebs cycle. Describe the chemiosmotic model for ATP generation. Compare and contrast aerobic and anaerobic respiration. Describe the chemical reactions and some products of ...
Cellular Respiration - Peoria Public Schools
Cellular Respiration - Peoria Public Schools

... • What are the products? 34 ATP 6 H2O • Is O2 required and if so WHY? Yes, so H+ can diffuse and ATP can be produced ...
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Energy Metabolism Review

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... energy of reactions. Answer the question(s) that accompany each catalytic strategy. I). Acid-Base Catalysis- Which enzyme of glycolysis uses a strict acid-base catalytic mechanism? What candidate amino acids would you expect this enzyme to use for this acid-base catalysis? II). Covalent Catalysis- N ...
Cellular Respiration
Cellular Respiration

... 10. Fermentation is not as energy productive as respiration because a. it does not take place in a specialized membrane-bound organelle. b. it takes place within the mitochondria of cells. c. it is the pathway common to fermentation and respiration. d. NAD+ is regenerated by alcohol or lactate produ ...
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Newby From Patient to Payment 5th Edition Chapter 8
Newby From Patient to Payment 5th Edition Chapter 8

... C) NADH dehydrogenase D) succinate reductase E) All of the above components of the electron transport chain actively pump protons across the inner mitochondrial membrane. ...
Which of the following molecules is most likely to be used in a
Which of the following molecules is most likely to be used in a

... [Assume each NADH produces app 2.5 ATP’s and each FADH2 produces 1.5 ATP, Assume 2 ATP’s needed for the first activation step] A. First, calculate the number of acetyl-Sco-A that can be produced from Lauric Acid. (We do this by taking the number of carbon atoms in the acid and divide by 2.) This is ...
Cell Respiration Take Home Test 1. When cells break down food
Cell Respiration Take Home Test 1. When cells break down food

... c. is temporarily stored in ATP molecules while some is released as body heat. d. causes excitation of electrons in chlorophyll molecules. 2. The process of aerobic cellular respiration a. is performed only by organisms that are incapable of photosynthesis. b. breaks down sugar molecules to release ...
Chapter 25
Chapter 25

... reduced coenzymes NADH + H+ and FADH2, containing ________________ GTP, which ___________ to make ATP CO2  bloodstream and ________ at lungs ...
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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.
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