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Concept explainers
Interpretation: To contrast the products in the last three steps of gluconeogenesis with the reactants in the first three steps of glycolysis.
Concept introduction: Glycolysis
In the gluconeogenesis pathway, glucose is produced from non-carbohydrate substances. The net overall equation for gluconeogenesis is as follows:
A reactant is defined as the substance that is initially present in the
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Chapter 24 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Identify the following as a characteristic of one or more following process: glycolysis, glycogenesis, Glycogenolysis, and gluconeogenesis. 1. Glucose 6-phosphate is the initial reactant 2. Glucose is the final product 3. Glucose 6-phosphate is produced in the first step 4. UTP is involved in the process 5. ADP is converted to ATP in this processarrow_forwardName the substrate and the product of (a) glycolysis and (b) gluconeogenesis.arrow_forwardGluconeogenesis is like glycolysis but in reverse. Name the 4 enzymes that are responsible for this process. What is its final product?arrow_forward
- c) As what molecule does each of the monosaccharides enter glycolysis? d) How many moles of ATP are generated from the complete oxidation of one mole of lactose? Show all the steps for the calculation of moles of ATP. Be sure to account for energy used in activating the components of lactose so that they can enter glycolysis.arrow_forwardDescribe the four phases of glycolysis. What are theproducts of glycolysis?arrow_forwardIdentify the 4 steps of gluconeogenesis that are different from glycolysis. Write the reactants, enzymes, cofactors/coenzymes and products involved in the gluconeogenesis pathway.arrow_forward
- Of the 36 molecules of ATP produced by the complete metabolism of glucose, how many are produced directly in glycolysis alone, that is, before the common pathway?arrow_forwardWhy is it important that gluconeogenesis is not the exactreverse of glycolysis?arrow_forwardThioesters play important roles in glycolysis and tca cycle. List which reactions involve thioesters.arrow_forward
- Why are some enzymes needed only in the gluconeogenesis pathway and not in the glycolysis pathway?arrow_forwardGlycolysis and gluconeogenesis share most of their reactions and enzymes, apart from the three irreversible reactions in glycolysis. Provide a simplified schematic presentation (metabolic map) of glycolysis and gluconeogenesis; and indicate the enzymes that differ between the two processes.arrow_forwardGlycolysis occurs in two stages. Describe what is accomplished in each stage.arrow_forward
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