5. The reaction of glucose synthesis is endergonic (6CO2 + 6H2O + energy C6H1206 + 602), AG = + 686 kcal/mole, which mean that it is not spontaneous. How is it possible that this reaction still takes place in living organisms? * The endergonic glucose synthesis is coupled with an exergonic reaction (for example ATP hydrolysis) in the same system. The endergonic glucose synthesis is coupled with other endergonic reactions in the same system. The exergonic glucose synthesi io onunl

5. The reaction of glucose synthesis is endergonic (6CO2 + 6H2O + energy C6H1206 + 602), AG = + 686 kcal/mole, which mean that it is not spontaneous. How is it possible that this reaction still takes place in living organisms? * The endergonic glucose synthesis is coupled with an exergonic reaction (for example ATP hydrolysis) in the same system. The endergonic glucose synthesis is coupled with other endergonic reactions in the same system. The exergonic glucose synthesi io onunl

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter6: Metabolism

Section: Chapter Questions

Problem 7RQ: Which of the following comparisons or contrasts between endergonic and exergonic reactions is false?...

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Similar questions

In an enzymatic reaction: a. the enzyme leaves the reaction chemically unchanged. b. if the enzyme molecules approach maximal rate, and the substrate is continually increased, the rate of the reaction does not reach saturation. c. in the stomach, enzymes would have an optimal activity at a neutral pH. d. increasing temperature above the optimal value slows the reaction rate. e. the least important level of organization for an enzyme is its tertiary structure.
Which of the following statements about the allosteric site is true? a. The allosteric site is a second active site on a substrate in a metabolic pathway. b. The allosteric site on an enzyme can allow the product of a metabolic pathway to inhibit that enzyme and stop the pathway. c. When the allosteric site of an enzyme is occupied, the reaction is irreversible and the enzyme cannot react again. d. An allosteric activator prevents binding at the active site. e. An enzyme that possesses allosteric sites does not possess an active site.
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; oxaloacetate
In the following graph: A represents the product. B represents the energy of activation when enzymes are present. C is the free energy difference between A and D. C is the energy of activation without enzymes. E is the difference in free energy between the reactant and the products.
Which of the following statements is false? Imagine that you ingested three chocolate bars just before sitting down to study this chapter. Most likely: a. your brain cells are using ATP. b. there is no deficit of the initial substrate to begin glycolysis. c. the respiratory processes in your brain cells are moving atomsfrom glycolysis through the citric acid cycle to the electrontransfer system. d. after a couple of hours, you change position and stretch torest certain muscle cells, which removes lactate from thesemuscles. e. after 2 hours, your brain cells are oxygen-deficient.
1. Assuming that everything that’s needed to make tripalmitin comes from glucose, how many glucose would be used by adipose tissue in the synthesis of 1 mol tripalmitin? 2. How many ATP would be used (net of produced and used)? 3. If an animal absorbs 35 g glucose (MW = 180 g/mol) from drinking a can of pop, how many grams of tripalmitin (MW = 807 g/mol) can be produced from it in adipose tissue? Please provide only typed answer solution no handwritten solution needed allowed
2.Assume we start with 1 Glucose molecule. What are the inputs to the payoff phase of glycolysis? a. 2xPyruvate b. 2xGlyceraldehyde-3P c. 1xDihydoxyacetone-P and 1xGlyceraldehyde-3P d. 2xDihydroxyacetone-P
1. What are the effects of pH and temperature to catalase? What is the optimum pH and optimum temperature for catalase? 2. Explain why the rate of reaction initially increases with increase in temperature then gradually declines as the temperature is further increased. 3. Is the rate of enzymatic reaction always directly dependent on enzyme concentration? Explain. 4. Explain the effect of substrate concentration on enzyme activity. 5. What is the effect of CuSO, on the enzymatic activity of catalase? 6. Is CuSO4 an activator or inhibitor? If it is an inhibitor, what kind of inhibitor is it?
2. One manifestation of cytochrome oxidase deficiency in humans is severe muscle weakness. Briefly explain why. 3. Clostridium bacteria are killed in the presence of molecular oxygen. Would you expect Clostridium to produce catalase? Briefly explain.
3 Some enzymes are used in the clinical lab to diagnose diseases. There are two specific markers for enzymes in heart: lactate dehydrogenase(LDH) and creatine kinase (CK). Both of these enzymes are oligomeric,form several isoenzymes. The enzymes eatalyze the following reactions: 1. Name the classes of these enzymes. 2.What coenzyme reguires LDH? Write the formula ofthe vitamine, coenzyme is synthetized from. 3.Give the definition of the term “isoenzyme” and name types of isoenzyme and proteins appcared in the blood in myocardial infarction.
4. If lots of acetyl-CoA is being formed in the mitochondrial matrix, a particular compound will be exported into the cytosol. a.What compound is this? b. What effect does this compound have on fatty acid synthesis? c. How does the compound produce this effect?
. 1 Which enzyme catalyzes the first step of glycolysis? explain the whole pathway in detail?