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Bio302 Biochemistry II
Bio302 Biochemistry II

Metabolism
Metabolism

... – Breaks down glucose into two molecules of pyruvate – Produces net 2 ATP and 2 NADH Conversion of pyruvate to acetyl CoA yields 2NADH 2. The citric acid cycle – Completes the breakdown of glucose – Produces net 2 ATP, 6 NADH and 2 FADH2 from 2 pyruvate 3. Oxidative phosphorylation – Is driven by th ...
Electron Transport Chain (ETC)
Electron Transport Chain (ETC)

... http://www.cliffsnotes.com/WileyCDA/CliffsReviewTopic/Introductio n-to-Glycolysis.topicArticleId-24998,articleId-24980.html http://www.dnatube.com/video/2338/Glycolysis ...
Reactions of Photosynthesis (continued)
Reactions of Photosynthesis (continued)

... followed by the Citric Acid Cycle (aka Krebs Cycle) and electron transport chain = cellular respiration – releases energy by breaking down food in the presence of oxygen ...
Energy and Metabolism
Energy and Metabolism

... (1) occurs in cytoplasm; anaerobic (2) rearranges the bonds in glucose molecules, releasing free energy to form ATP from ADP through substrate-level phosphorylation resulting in the production of pyruvate. c. Kreb’s cycle (1) occurs in mitochondrial matrix (2) also called the citric acid cycle (3) o ...
Lecture 7
Lecture 7

... Chapter 5, part B Microbial Metabolism ...
Cell Respiration
Cell Respiration

... If no O2 is available, the pyruvate is converted into waste products that are later removed from the cell.  In humans the waste product is LACTATE (lactic acid).  In yeast the waste products are ETHANOL and CARBON DIOXIDE.  No further ATP is made. ...
3 " ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ - 1 - G 2 ¢ 2 2 – 1. Biological catalysts are (A
3 " ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ - 1 - G 2 ¢ 2 2 – 1. Biological catalysts are (A

... 28. The structure of the double helix, proposed by Watson and Crick in 1953, is a (A) A-DNA (B) B-DNA (C) Y-DNA (D) Z-DNA 29. The formylation of methionine in prokaryotes (A) depends on two different tRNAs, where methionine can be formylated when bound to one form and not the other (B) depends on tw ...
Phases of Cellular Respiration
Phases of Cellular Respiration

... During this process electrons are transferred from the sugar molecule to O2 making H2O. You do not see any electron transfer in the equation above. But you can see changes in H ions. Glucose molecules lose hydrogen atoms as it is converted to CO2 while O2 gains hydrogen atoms to form water. O2 is an ...
Respiration - College Heights Secondary
Respiration - College Heights Secondary

... c. 2 ATP (net) ...
Chapter 13 - Cell Metabolism
Chapter 13 - Cell Metabolism

... Stage 3 – Kreb’s Cycle/ETC • In the mitochondria pyruvate broken down to CO2 and the remaining 2 Cs (acetyl group) are added to Coenzyme A – Also can get Acetyl CoA from fats ...
Correlation - EngineeringDuniya.com
Correlation - EngineeringDuniya.com

... TCA AS THE HEART OF ALL METABOLIC PATHWAYS Catabolism of proteins, fats, and carbohydrates in the three stages of cellular respiration. Stage 1: oxidation of fatty acids,glucose, and some amino acids yields acetyl-CoA. Stage 2: oxidation of acetyl groups in the citric acid cycle includes four steps ...
Name: #: Cellular Respiration Review 2 Process Where does it
Name: #: Cellular Respiration Review 2 Process Where does it

... 6. Write the complete overall chemical equation for cellular respiration using chemical symbols instead of words: 6O2 + C6H12O6  6H2O + 6CO2 + 36ATP 7. Why do we say there is a ‘net’ gain of 2 ATP at the end of glycolysis? Glycolysis produces 4ATP but since it needs 2 ATP to start, the cell only in ...
No Slide Title
No Slide Title

... • Occurs in the cytoplasm of all organisms. • 6 Carbon Glucose splits into 2 molecules each containing 3 carbons (called pyruvate) • Because Glucose is a pretty stable molecule, energy is needed to start this reaction (2ATP) ...
Exam 2
Exam 2

... used to pump protons into the lumen of the thylakoid, creating a gradient of protons across the thylakoid membrane. The electrons finally join NADP+ and, along with protons, form NADPH. The chloroplast ATP synthase uses the potential energy in the proton gradient to make ATP. Both NADPH and ATP are ...
Respiration and Fermentation
Respiration and Fermentation

... b. NADH c. lactic acid d. pyruvic acid 5. The activation energy needed to get glycolysis started is provided by a. vibration energy in the water. b. ATP. c. proton motive force. d. reducing glucose using electrons from NADPH. 6. What is the net gain in ATP molecules per glucose produced during the r ...
see previous week 3 link
see previous week 3 link

... • The substrates of the pathways of cellular respiration can also be used as starting materials for synthetic reactions. • This is the cell’s metabolic pool, in which one type of molecule can be converted into another. • In this way, dietary carbohydrates can be converted to stored fat, and come sub ...
Document
Document

... 2. It is often convenient to assay an enzyme reaction by coupling it with another enzyme to form a product that is easily quantified. An example is the assay of pyruvate kinase by coupling it with lactate dehydrogenase. Phosphoenolpyruvate + ADP + H+ → pyruvate + ATP Pyruvate + NADH + H+ → lactate + ...
Camp 1
Camp 1

... • Golgi bodies: Package and process proteins for secretion and delivery to other cellular components. • Mitochondria: Organelles in which the common catabolic pathway takes place in higher organisms; the purpose of this catabolic pathway is to convert the energy stored in food molecules into energy ...
Glycolysis & Fermentation
Glycolysis & Fermentation

... 5 Steps in Krebs cycle Step 1 – produces citric acid  Step 2 – releases CO2  Step 3 – releases CO2  Step 4 – conversion of 4-carbon compound  Step 5 – 4-carbon compound converted back to oxaloacetic acid ...
Cellular Respiration
Cellular Respiration

... occurs. The Krebs cycle occurs in the matrix (fluid portion) of the mitochondrion. The Krebs cycle produces more ATP, CO2, and ...
Chapter 9 Notes: Cellular Respiration
Chapter 9 Notes: Cellular Respiration

... ii. Occurs in cytoplasm iii. This process is anaerobic – it does not require oxygen b. Steps of Oxidative Respiration: i. This process is aerobic- it requires oxygen ii. Pyruvate is broken down into pyruvic acid. iii. Krebs Cycle - pyruvic acid is broken down into CO2 in a series of energy-extractin ...
Respiration - Mayfield City Schools
Respiration - Mayfield City Schools

... • How do the electrons get transported to the special proteins involved? carried by carrier molecules NADH, FADH2 • What is the primary function of the chain? to make ATP ...
Energy
Energy

... • Steps 1-5 of glycolysis break one glucose molecule down into two D-glyceraldehyde 3-phosphate fragments. • An investment of 2 ATP molecules is required. • Steps 6-10 occur twice for each glucose that enters in at step 1. • Steps 6-10 produce: 2 pyruvates, 4 ATPs, 2 NADH/H+ per glucose molecule For ...
24,7 Loctic Fermentotion
24,7 Loctic Fermentotion

... The pathway by which lactate is conuerted to glucose is called gluconeogenesis. Gluconeogenesis,which is the synthesis of glucose from startingmaterials that are not carbohydrates,is an exampleof an anabolic (synthetic) pathway. Like most anabolic pathways, it requires the expenditure of ATP Six mol ...
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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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