Homework Answers
4. Oxidize; NADP+ is the correct option. Glucose 6-phosphate dehydrogenase (G6PD) is a cytosolic enzyme it catalyze the very first step of the pentose phosphate pathway i.e., the oxidation of glucose 6-phosphate and form 6-phosphoglucono-D-lactone which is an intramolecular ester. In this process NADP+ act as electron acceptor and NADP+ is converted to NADPH.
D-glucose 6-phosphate + NADP+⇌ 6-phospho-D-glucono-1,5-lactone + NADPH + H+
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QUESTION 4 There is an enzyme that we didn't discuss (involved in a process that we...
Question 2: You have just discovered a new enzyme that catalyzes the degradation of cellulose to glucose. You hope to commercialize this enzyme ultimately to invent a process for biofuel manufact...
Question 2: You have just discovered a new enzyme that catalyzes the degradation of cellulose to glucose. You hope to commercialize this enzyme ultimately to invent a process for biofuel manufacture. In order to determine how efficient the enzyme is and how fast the enzyme catalyzes the reaction, you have to perform some basic enzyme kinetics. Plot the following enzyme data for the enzyme catalyzed reaction and determine the Km and Vmax. Show your graph with correct units on the...
Catabolism can be considered to be the sum of stages. Question 1 options: 1 2 3...
Catabolism can be considered to be the sum of stages. Question 1 options: 1 2 3 4 Question 2 (0.5 points) Glycolysis is the name of the process that converts glucose to . Question 2 options: lactate pyruvate carbonate acetyl Question 3 (0.5 points) Re-read 24.4A, if necessary, for this question. Consider the oxidation of pyruvate by in the presence of Coenzyme A and a dehydrogenase enzyme: Although oxygen is not needed for this specific reaction, oxygen IS needed to...
We have just enough time to get our bearings when we see a huge enzyme (called...
We have just enough time to get our bearings when we see a huge enzyme (called hexokinase) closing in. We are wrapped into the active site of the enzyme. Your classmate sitting on Carbon #6 is brutally launched as the enzyme removes a phosphoryl group from ATP and attaches it to the carbon. We are released from the enzyme and the molecule on which we ride is now Glucose-6-phosphate. What is this type of active site binding called? What type...
Discuss the relative advantages and disadvantages of light and electron microscopy. How would you best visualize...
Discuss the relative advantages and disadvantages of light and electron microscopy. How would you best visualize (a) a living cell, (b) a yeast mitochondrion, (c) a bacterium, and (d) a microtubule? Identify which of the following statements are FALSE and then explain WHY they are false. (a) The hereditary information of a cell is passed on by its proteins. (b) Bacterial DNA is found in the cytosol. (c) All cells of the same organism have the same number of chromosomes...
13. Describe 2 mechanisms whereby ATP is generated during cellular respiration Mechanism 1: Mechanism 2: 14....
13. Describe 2 mechanisms whereby ATP is generated during cellular respiration Mechanism 1: Mechanism 2: 14. Indicate the MAIN molecules that enter and exit each of these processes? Molecule(s) IN Process Molecule(s) OUT Glycolysis Pyruvate Oxidation Citric Acid/Krebs Cycle ETC Photophosphorylation Calvin Cycle 15. Isocitrate is a 6 carbon molecule that is oxidized to a-ketoglutarate (a 5 carbon molecule) by the enzyme isocitrate dehydrogenase. What happens to the extra carbon atom in this reaction and in which process (listed in...
please help!! 37. What is the name of the enzyme that creates ATP in oxidative phosphorylation?...
please help!!
37. What is the name of the enzyme that creates ATP in oxidative phosphorylation? A) ATP synthase B) ATP dehydrogenase C) ATP transferase D ) ATP ligase 38. This is another name for Coenzyme Q. A) ubiquinone B) quantum carrier C) glutamine D) vitamin B6 39. Choose the two correct paths taken by a pair of electrons as it travels down the electron-transport chain. (1) NADH - complex / -- COQ - Complex - C C . complex...
QUESTION 5 This question explores the Calvin cycle in plants. A summary of the three stages of CO...
QUESTION 5 This question explores the Calvin cycle in plants. A summary of the three stages of CO, assimilation in photosynthetic organisms is shown below (Fig. 20-31 from the text book). All the reactions of the Calvin cycle in detail are shown on the last page. Only the first three reactions are directly involved in carbon-fxation, assimilation and reduction, to Stage 3: ATP3 Regeneration of (3) Stage 1a Ribulose 1.5 e (GAP). The rest of the pathway results in the...
Question 1 (1 point) Which of the following best describes glycogen? Question 3 (1 point) All...
Question 1 (1 point) Which of the following best describes glycogen? Question 3 (1 point) All the protease mechanisms we discussed in class involved formation of a covalent acyl enzyme intermediate. O Alinear polymer of glucose joined by a(1,6) linkages. True False O A polymer of glucose joined by a(1,4) linkages with a(1,6) linkages every 5-10 residues. Question 4 (1 point) O A polymer of glucose joined by B(1,4) linkages with a(1,6) linkages every 5-10 residues. In the mechanism of...
Question 1 (1 point) Which of the following best describes glycogen? Question 3 (1 point) All...
Question 1 (1 point) Which of the following best describes glycogen? Question 3 (1 point) All the protease mechanisms we discussed in class involved formation of a covalent acyl enzyme intermediate. O Alinear polymer of glucose joined by a(1,6) linkages. True False O A polymer of glucose joined by a(1,4) linkages with a(1,6) linkages every 5-10 residues. Question 4 (1 point) O A polymer of glucose joined by B(1,4) linkages with a(1,6) linkages every 5-10 residues. In the mechanism of...
Question 4: (1 point) Name one enzyme you would introduce into Z. mobilis to decrease the...
Question 4: (1 point) Name one enzyme you would introduce into Z. mobilis to decrease the flux through its ethanol-producing pathway. ΕιΠαΠΠΙΠΟΠΠΕΠιαιιυιυιιιΙο Πυνο Thomas W Jeffries The complete genome sequence of the ethanol-producing bacterium Zymomonas mobilis provides new opportunities for industrial alcohol fermentation. HO D 2016- -glucose 2 Ethanol HC OH YOH 2 NAD 2002 ATP:D-glucose 6-phosphotransferase 2 NADH+H B-o-glucose-6P HC Pyruvato OH Pyruvate TOH NADH+H 2 ATP NADP npg © 2005 Nature Publishing Group http://www.nature.com/naturebiotechnology B-o-glucose-6-phosphate: NADP. 1-oxoreductaso 2...
Question 2: You have just discovered a new enzyme that catalyzes the degradation of cellulose to glucose. You hope to commercialize this enzyme ultimately to invent a process for biofuel manufacture. In order to determine how efficient the enzyme is and how fast the enzyme catalyzes the reaction, you have to perform some basic enzyme kinetics. Plot the following enzyme data for the enzyme catalyzed reaction and determine the Km and Vmax. Show your graph with correct units on the...
Discuss the relative advantages and disadvantages of light and electron microscopy. How would you best visualize (a) a living cell, (b) a yeast mitochondrion, (c) a bacterium, and (d) a microtubule? Identify which of the following statements are FALSE and then explain WHY they are false. (a) The hereditary information of a cell is passed on by its proteins. (b) Bacterial DNA is found in the cytosol. (c) All cells of the same organism have the same number of chromosomes...
13. Describe 2 mechanisms whereby ATP is generated during cellular respiration Mechanism 1: Mechanism 2: 14. Indicate the MAIN molecules that enter and exit each of these processes? Molecule(s) IN Process Molecule(s) OUT Glycolysis Pyruvate Oxidation Citric Acid/Krebs Cycle ETC Photophosphorylation Calvin Cycle 15. Isocitrate is a 6 carbon molecule that is oxidized to a-ketoglutarate (a 5 carbon molecule) by the enzyme isocitrate dehydrogenase. What happens to the extra carbon atom in this reaction and in which process (listed in...
please help!!
37. What is the name of the enzyme that creates ATP in oxidative phosphorylation? A) ATP synthase B) ATP dehydrogenase C) ATP transferase D ) ATP ligase 38. This is another name for Coenzyme Q. A) ubiquinone B) quantum carrier C) glutamine D) vitamin B6 39. Choose the two correct paths taken by a pair of electrons as it travels down the electron-transport chain. (1) NADH - complex / -- COQ - Complex - C C . complex...
QUESTION 5 This question explores the Calvin cycle in plants. A summary of the three stages of CO, assimilation in photosynthetic organisms is shown below (Fig. 20-31 from the text book). All the reactions of the Calvin cycle in detail are shown on the last page. Only the first three reactions are directly involved in carbon-fxation, assimilation and reduction, to Stage 3: ATP3 Regeneration of (3) Stage 1a Ribulose 1.5 e (GAP). The rest of the pathway results in the...
Question 1 (1 point) Which of the following best describes glycogen? Question 3 (1 point) All the protease mechanisms we discussed in class involved formation of a covalent acyl enzyme intermediate. O Alinear polymer of glucose joined by a(1,6) linkages. True False O A polymer of glucose joined by a(1,4) linkages with a(1,6) linkages every 5-10 residues. Question 4 (1 point) O A polymer of glucose joined by B(1,4) linkages with a(1,6) linkages every 5-10 residues. In the mechanism of...
Question 1 (1 point) Which of the following best describes glycogen? Question 3 (1 point) All the protease mechanisms we discussed in class involved formation of a covalent acyl enzyme intermediate. O Alinear polymer of glucose joined by a(1,6) linkages. True False O A polymer of glucose joined by a(1,4) linkages with a(1,6) linkages every 5-10 residues. Question 4 (1 point) O A polymer of glucose joined by B(1,4) linkages with a(1,6) linkages every 5-10 residues. In the mechanism of...
Question 4: (1 point) Name one enzyme you would introduce into Z. mobilis to decrease the flux through its ethanol-producing pathway. ΕιΠαΠΠΙΠΟΠΠΕΠιαιιυιυιιιΙο Πυνο Thomas W Jeffries The complete genome sequence of the ethanol-producing bacterium Zymomonas mobilis provides new opportunities for industrial alcohol fermentation. HO D 2016- -glucose 2 Ethanol HC OH YOH 2 NAD 2002 ATP:D-glucose 6-phosphotransferase 2 NADH+H B-o-glucose-6P HC Pyruvato OH Pyruvate TOH NADH+H 2 ATP NADP npg © 2005 Nature Publishing Group http://www.nature.com/naturebiotechnology B-o-glucose-6-phosphate: NADP. 1-oxoreductaso 2...
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