8. Use carbon oxidation number to help balance the following reaction with NADH and NAD. Clearly show your work. NAD CoenzymeA-SH CO2 tr Coenzyme A + NADH
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- 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; oxaloacetate11. Refer to the figure below. нн Н `NH2 NH2 N' N- 2e-+H* R NAD+ NADH NAD+ functions as a coenzyme in many enzyme-catalyzed reactions. The changes that take place in this coenzyme are the same for all of these reactions and are illustrated in the figure. It is likely that, in these reactions, NAD+ functions as an electron acceptor (reducing agent) in redox reactions. functions as an electron donor (oxidizing agent) in redox reactions. functions as a base in acid-base catalytic mechanisms. functions as an electron donor (oxidizing agent) in redox reactions. functions as an electron acceptor (oxidizing agent) in redox reactions. +Z-7. Complete the scheme for isocitrate dehydrogenase. Name the reactant and product. Draw and name the intermediate. COOH HIC H H-C -COOH HO-C-H COOH NAD(P)* NAD(P) H +H+ CO₂ بر COOH HIC-H HIC-H C=O COOH
- 1. Choose all the correct answers. Enzyme catalyzing this reaction: COO CO0 но C-H + NAD* CH2 + NADH + H* CH2 лвенный тет CoO COO L-Malate Oxaloacetate A. Belongs to the class of transferases. B. Belongs to the class of oxidoreductases. C. Is a simple enzyme. D. Is a holoenzyme.ADP ATP NADP NADPH FAD FADH2 Oxidation Reduction chemiosmosis acetyl coenzyme >give the meaning of the acronyms >define each1. Identify the oxidized coenzyme (letter abbreviation only) that participates in this reaction of the Kreb’s cycle. Succinate --> Fumarate 2. How many mol of NADH can be obtained upon the beta oxidation of stearic acid? 3. How many mol of ATP can be obtained upon the complete oxidation of 1 mol stearic acid? 4. How many steps in glycolysis in which ATO is converted to ADP?
- Which coenzyme is most likely used in the following biochemical reaction? COO CH₂ CH₂ COO 0 0 0 0 0 NAD+ NADP+ FAD Biotin Coenzyme A COO Ī CH CH I Coo AOne of the enzymes in glycolysis is aldolase, which requires Zn* for catalysis. The metal ion is referred to as O Apoenzyme O Coenzyme O Cofactor O Prosthetic group24a. What is the name of the process shown in the reaction below? ANSWER O || C-COOH J 2 CH Body* 3 #3 (PYRUVATE) (LACTIC ACID) 24b. Is this reaction an oxidation or a reduction? ANSWER (Oxidation or Reduction) 24c. Would this reaction make NAD+ or make NADH? ANSWER (NAD+ or NADH) 24d. No ATP is made in this reaction. In two sentences, explain why cells have to do this metabolism sometimes. Why is this sometimes necessary for survival? A 4 B % от оро CH 5 OH CH-COOH MacBook Pro I U < 6 & 7 8
- 8. The enzyme thiolase catalyzes one step in the ß-oxidation of saturated fats. One portion of the mechanism for this reaction is shown below. Describe the catalytic mechanism at work. (Note: "SCOA" is shorthand for the compound Acetyl-CoA) RCOCH₂COSCoA + HSCOA → H3C₂OSC0A + RCOSCOA HN NH CH₂ NH CH₂ CH₂ FS Grease NH3 H-SCO A NH CH2 CH₂ NH3 S Co A CH₂ NH 1 3 H-SCO A H3C SCO A NH3 a h-SCOA R-C S Co A CH₂ CH₂ C H₂ 0=0 HN NH + NH3 H₂C HN CH₂ NH CH₂ CH₂ 2 S Co A CH₂ NH NH2. Complete and identify the enzymes involved in the following pathways O dihydroxyacetone-P DHAP ATP ADP ATP ADP glucose-6-P G-6-P fructose-1,6-bisP F1,6-BP glucose fructose-6-P F-6-P glyceraldehyde-3-p* GAP NAD+- NADH C-OH c=0 7 ADP CH2 OH 10 H20 ATP CH3 ATP ADP 2-P-glycerate 2PG 3-P-glycerate 3-PG 1,3-bisP-glycerate 1,3 BPG pyruvate P-enolpyruvate PEP A. Glycolytic Pathway (Embden-Meyerhof Pathway) GPx GSH GSSG GR NADP NADPH Glucose NAD metHbreductase NADH Hb Pentose phosphate 11, 12 pathway G-6-P Note: Ribose For (11 and 12) identify 2 enzymes that are involved in production of NADPH during oxidative pentose phosphate pathway S-phosphate metHb Embden-Meyerhof pathway 2 ADP Luebering-Rapoportshunt 2,3 DPG 2 ATP Lactate B. Metabolism of Glucose in Erythrocytes1 of 1 3. A sample of glucose reacts in anaerobic respiration. The right- hand box below shows a particle diagram of the moles of substances present after the reaction is complete. fe On a piece of paper draw the "Before" box as shown and draw a particle diagram of the reactant molecules that produced the mixture shown on the right. Key = C2H5OH = CO2 = CgH1206 Sub Before After You will need to draw a diagram to answer this question. On a piece of paper, draw the "Before" box as shown, and then draw a particle diagram of the reactant molecules that produced the mixture shown on the right. Upload an image of your drawing by clicking "Upload files" or by dragging and dropping your file into the box. Or, use your device's camera to take a photo of your work by clicking the camera icon.
