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Substrate-level phosphorylation occurs within a metabolic pathway where sufficient energy is released by a given chemical reaction to drive the synthesis of ATP from ADP and phosphate Substrate-level?
phosphorylation is a type of ATP synthesis that does not involve the electron transport chain. It occurs during glycolysis and the citric acid cycle. The phosphate group is transferred from a high-energy substrate directly to ADP to form ATP.
What happens when ADP gains a phosphate to form ATP?
ATP or adenosine triphosphate. When ADP, adenosine diphosphate, gets a third phosphate group, it becomes ATP. ATP is the energy source of many reactions in the cell. When a reaction needs energy to occur, the enzyme that catalyzes the reaction also cleaves a molecule of ATP into ADP and phosphate. The energy of the phosphate bond is used to fuel the endothermic reaction. The ATP is regenerated (phosphorylation of ADP) in the glycolysis or another process that generates energy.
What enzyme catalyzes the reaction that creates creatine phosphate?
The enzyme creatine kinase catalyzes the reaction that creates creatine phosphate. This reaction involves transferring a phosphate group from ATP to creatine, forming creatine phosphate and ADP. Creatine phosphate serves as a short-term energy reservoir in muscle cells.
The formation of ADP and inorganic phosphate from ATP and water is an example of which kind of reaction?
The formation of ADP and inorganic phosphate from ATP and water is an example of a hydrolysis reaction. In this reaction, a water molecule is used to break the bond between the phosphate group and ATP, resulting in the formation of ADP and inorganic phosphate.
What is the fate of the phosphate group that is removed when the ATP is converted to ADP?
The phosphate group that is removed when ATP is converted to ADP can be used in other cellular processes requiring energy, such as in muscle contraction or active transport. Alternatively, it can be recycled back into ATP through processes like oxidative phosphorylation.
What reaction does the enzyme hexokinase catalyze?
Hexokinase catalyzes the phosphorylation of glucose to glucose-6-phosphate using ATP as a phosphate donor. This reaction is the first step in glycolysis and plays a crucial role in glucose metabolism in cells.
What is the first reaction to occur during glycolysis?
The first reaction in glycolysis is the phosphorylation of glucose to glucose-6-phosphate by the enzyme hexokinase. This step consumes one molecule of ATP to phosphorylate glucose, making it more reactive for subsequent steps in glycolysis.
Describe the first reaction in glycolysis Is this reaction catalyzed by an enzyme?
The first reaction in glycolysis is the phosphorylation of glucose to glucose-6-phosphate by the enzyme hexokinase. This reaction involves the transfer of a phosphate group from ATP to glucose, requiring energy for activation.
What type of reaction is phosphoenolpyruvate ADP to Pyruvate ATP?
This reaction is a phosphorylation reaction where phosphoenolpyruvate transfers a phosphate group to ADP to form pyruvate and ATP. It is catalyzed by the enzyme pyruvate kinase, an important step in glycolysis for ATP production.
Substrate-level phosphorylation occurs within a metabolic pathway where sufficient energy is released by a given chemical reaction to drive the synthesis of ATP from ADP and phosphate Substrate-level?
phosphorylation is a type of ATP synthesis that does not involve the electron transport chain. It occurs during glycolysis and the citric acid cycle. The phosphate group is transferred from a high-energy substrate directly to ADP to form ATP.
Which is the committed step of glycolysis?
The committed step of glycolysis is the reaction catalyzed by phophofructokine (PFK) converting fructose-6-phosphate into fructose-1,6- bisphosphate. The reaction is irreversible and secondly, it's the only reaction peculiar to the glycolysis.
What is a coupled reaction using as an example the conversion of glucose to glucose-6-phosphate?
A coupled reaction is two reactions that occur together. One reaction is necessary for the other to occur.The conversion of glucose to glucose-6-phosphate is a good example. The first step that the cell takes in glycolysis (the beginning of the cellular respiration of glucose) is to convert glucose into glucose-6-phosphate. This phosphorylation requires an energy input, and therefore will not occur spontaneously.In the cell, both the necessary energy and the phosphate group are provided by a molecule of ATP. The free energy released by the conversion of ATP into ADP and a phosphate ion (Pi) is far greater than the energy required for the phosphorylation of glucose, and so, when the two reactions are coupled together, the phosphorylation of glucose goes ahead.To couple these reactions a hexokinase is required. This enzyme needs magnesium as a cofactor.
What molecule is the reactant in the first reaction of glycolysis?
http://wiki.answers.com/Q/What_molecule_is_the_reactant_in_the_first_reaction_of_glycolysis"
What step in glycolysis involves an endergonic reaction?
The conversion of glucose-6-phosphate to fructose-6-phosphate by phosphoglucose isomerase is an endergonic reaction in glycolysis. This step requires an input of energy in the form of ATP to drive the reaction forward.
2nd reaction of glycolysis. reactants, products, enzymes, reversibility?
Glucose-6-Phosphate to Fructose-6-Phosphate. reversible. Phosphogluctose isomerase.
4th reaction of glycolysis. reactants, products, enzymes, reversibility?
Fructose 1, 6-bisphosphate to dihydroxyacetone phosphate (DHAP) and Glyceraldehyde-3-Phosphate. Aldolase
Which kind of chemical reaction involves the attachment of removal of a phosphate group?
A phosphorylation reaction involves the addition of a phosphate group, while dephosphorylation involves the removal of a phosphate group. These reactions are crucial for regulating protein activity and cell signaling pathways.
