_______________________ is a process that relies on a phosphorylated intermediate to directly convert ADP to ATP.

검증된 단계별 안내

Identify the key concept in the question: it asks for a process that uses a phosphorylated intermediate to directly convert ADP to ATP.

Recall that ATP synthesis can occur through different mechanisms, such as substrate-level phosphorylation and oxidative phosphorylation.

Understand that substrate-level phosphorylation involves the direct transfer of a phosphate group from a phosphorylated intermediate to ADP, forming ATP.

Contrast this with oxidative phosphorylation, which uses a proton gradient and ATP synthase rather than a phosphorylated intermediate.

Conclude that the process described in the question is substrate-level phosphorylation.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Substrate-Level Phosphorylation

Substrate-level phosphorylation is a metabolic process where a phosphate group is directly transferred from a phosphorylated intermediate to ADP, forming ATP. This mechanism occurs in glycolysis and the Krebs cycle and does not require oxygen or an electron transport chain.

Phosphorylated Intermediate

A phosphorylated intermediate is a molecule temporarily bonded to a phosphate group during metabolic reactions. It serves as a high-energy donor that transfers the phosphate to ADP, enabling ATP synthesis without involving oxidative phosphorylation.

ATP Synthesis Mechanisms

ATP can be synthesized via substrate-level phosphorylation or oxidative phosphorylation. Understanding these mechanisms helps distinguish how cells generate energy under different conditions, with substrate-level phosphorylation being a direct and oxygen-independent process.