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In nucleotide structure, at which carbon of the sugar does the phosphate group typically attach?
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3. Energy & Cell Processes
Types of Phosphorylation
Scelta multipla
Substrate-level phosphorylation is utilized to create ATP in which steps of aerobic cellular respiration?
A
Electron Transport Chain and Chemiosmosis.
B
Glycolysis and Pyruvate Oxidation.
C
Pyruvate Oxidation and Krebs cycle.
D
Glycolysis and Krebs cycle.
Guida verificata passo dopo passo1
Understand that substrate-level phosphorylation is a process of ATP generation that occurs directly in the metabolic pathway by transferring a phosphate group to ADP from a phosphorylated intermediate.
Recognize that substrate-level phosphorylation occurs in the cytoplasm during glycolysis and in the mitochondrial matrix during the Krebs cycle.
Recall that glycolysis is the first stage of cellular respiration, where glucose is broken down into pyruvate, and ATP is produced through substrate-level phosphorylation.
Identify that the Krebs cycle, also known as the citric acid cycle, is the second stage of cellular respiration, where acetyl-CoA is oxidized, and ATP is again produced through substrate-level phosphorylation.
Note that the Electron Transport Chain and Chemiosmosis involve oxidative phosphorylation, not substrate-level phosphorylation, which is why they are not the correct answer for this question.
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