BIOL 1111 Chapter Notes - Chapter 4.3: Protein Filament, Metabolic Pathway, Motor Protein

• School: Northeastern University
• Department: Biology
• Course: BIOL 1111
• Professor: Mary- Susan Potts- Santone

Document Summary

We will now survey the various compartments of eukaryotic cells and their structure and function. Cytosol: the region of a eukaryotic cell that is outside the membrane-bound organelles but inside the plasma membrane. Synthesis and breakdown of molecules occur in the cytosol. Metabolism: the sum of the chemical reactions by which cells produce the materials and utilize the energy necessary to sustain life. Cytosol is a central coordinating region for many metabolic activities of eukaryotic cells. Metabolism is often a series of steps called a metabolic pathway. Each step in a metabolic pathway is catalyzed by a specific enzyme. Catabolism: pathways that involve the breakdown of a larger molecule into smaller. Enzyme: a protein that accelerates the rate of a chemical reaction molecules. These pathways are needed by the cell to utilize energy and generate molecules that provide the building blocks to construct macromolecules. Anabolism: the synthesis (production) of molecules and macromolecules; requires an input of energy.