2024年12月21日 · Metabolism, the sum of chemical reactions that take place in living cells, providing energy for life processes and the synthesis of cellular material. Living organisms are unique in that they extract energy from their environments via hundreds of coordinated, multistep, enzyme-mediated reactions.

2024年12月21日 · There are two main reasons for studying a metabolic pathway: (1) to describe, in quantitative terms, the chemical changes catalyzed by the component enzymes of the route; and (2) to describe the various intracellular controls …

In plant: Pathways and cycles …of reactions is called a metabolic cycle. The intermediate chemicals that are formed and used in the various stages of the sequence are called intermediary metabolites. Read More

2025年1月16日 · Metabolic pathways and cycles are either catabolic (energy-releasing) or anabolic (energy-consuming). Catabolic reactions break down complex metabolites into simpler ones, whereas anabolic reactions build up (biosynthesize) new molecules.

Metabolomics, the study of metabolites, the chemical substances produced as a result of metabolism, which encompasses all the chemical reactions that take place within cells to provide energy for vital processes.

2024年12月21日 · Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water. It includes glycolysis, the TCA cycle, and oxidative phosphorylation.

2024年12月21日 · Metabolism - Enzymes, ATP, Reactions: At any given time, a neutral molecule of water dissociates into a hydrogen ion (H+) and a hydroxide ion (OH−), and the ions are continually re-forming into the neutral molecule.

2024年12月21日 · Metabolism - Energy, Cells, Processes: It is characteristic of catabolic routes that they do not lead to uniquely identifiable end products. The major products of glycolysis and the TCA cycle, for example, are carbon dioxide and water.

Nucleic acid - Metabolism, Structure, Function: Replication, repair, and recombination—the three main processes of DNA metabolism—are carried out by specialized machinery within the cell.

metabolic disease, any of the diseases or disorders that disrupt normal metabolism, the process of converting food to energy on a cellular level. Thousands of enzymes participating in numerous interdependent metabolic pathways carry out this process.