BIO-1801 Lecture Notes - Lecture 8: Photosynthesis, Cell Adhesion, Prokaryote
Document Summary
Network of membranes enclosing the nucleus, endoplasmic reticulum, golgi apparatus, lysosomes, and vacuoles. May be directly connected to each other or pass materials via vesicles. Outer membrane of the nuclear envelope is continuous with the endoplasmic reticulum membrane. Materials within the nucleus are not part of the endomembrane system. Chromosomes: composed of dna and protein = chromatin. Nuclear matrix: filamentous network, organizes chromosomes. Network of membranes that form flattened, fluid-filled tubules or cisternae. Er membrane encloses a single compartment called the er lumen. Rough endoplasmic reticulum (rough er: studded with ribosomes, involved in protein synthesis and sorting. Smooth endoplasmic reticulum (smooth er: lacks ribosomes, detoxification, carbohydrate metabolism, calcium balance, synthesis, and modification of lipids. Also called the golgi body, golgi complex, or golgi. Three overlapping functions: secretion, processing, and protein sorting. Many different types of acid hydrolases to break down proteins, carbohydrates, nucleic acids, and lipids. Autophagy: recycling of worn-out organelles through endocytosis.
