这一章是整理细胞笔记以来最容易的一章，因为内容似乎已经包含在L18了

这一章给我带来了极大的心理冲击

Enzyme-coupled cell surface receptors Like GPCRs, enzyme-coupled receptors are transmembrane proteins with their ligand-binding domain on the outer surface of the plasma membrane Instead of having a

Metabolism of Nitrogenous Compounds I: Principles of Biosynthesis, Utilization, and Turnover 含氮化合物代谢Ⅰ：生物合成，利用与周转 一、Utilization of Ammonia: Biogenesis of Organic Nitrogen Pathways of nitrogen metabo

Metabolism of Nitrogenous Compounds II: Amino Acids, Porphyrins, and Neurotransmitters 氮化合物代谢II：氨基酸，卟啉，神经递质 一、Pathways of Amino Acid Degradation Glucogenic amino acids (生糖氨基酸) are amino acids whose

核苷酸代谢 一、Outlines of Pathways in Nucleotide MetabolismOverview of nucleotide metabolism precursors to nucleic acid （RNA, DNA)； critical elements energy metabolism （ATP）； carriers of activated metabo

Lipid Metabolism II: Membrane Lipids, Steroids, Isoprenoids, and Eicosanoids (脂质代谢II： 膜脂，类固醇，异戊二烯和花生酸类) 一、Metabolism of GlycerophospholipidsIntracellular synthesis and transport of membrane phospholip

Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates 脊椎动物器官间和细胞内能源代谢的协调 一、Interdependence of the Major Organs in Vertebrate Fuel MetabolismMetabolite concentrations represen

一、Utilization and Transport of Fat and CholesterolLipids play important roles in: Energy metabolism; As membrane constitutes; Hormones, fat-soluble vitamins, thermal insulators, biological regulator

一、The Basic Processes of PhotosynthesisPhotosynthesis: Provides carbohydrates for energy production Fixes CO2 (carbon re-enters the biosphere) The major source of atmospheric O2 Photosynthetic