PHYS 215 Lecture Notes - Lecture 2: Secretion, Golgi Apparatus, Endoplasmic Reticulum
29 Aug 2016
School
Department
Course
Professor
Document Summary
The plasma membrane: separates the ecf from the icf, maintains the intracellular environment, allows entry of food substances. The nucleus: large, nuclear envelope, dna, rna. The cytoplasm: the area outside of the nucleus, contains organelles (little organs) Endoplasmic reticulum: rough er dotted with ribosomes. Major site of protein and lipid synthesis. Generally, translate cytosolic proteins: smooth er lack of ribosomes. Can be continuous with the rough er. Golgi apparatus: farthest from the nucleus, receives transport vesicles, processing raw materials into finished products, sorting and directing the finished products, production of secretory vesicles. Lysosomes: contain hydrolytic enzymes, breakdown organic molecules, endocytosis. Receptor mediated endocytosis (binding has to happen in order to occur) Peroxisomes: contain oxidative enzymes, produces hydrogen peroxide then converts it to h2o and o2, rids the body of toxic substances, breakdown fat, not formed by golgi (self replicate) Mitochondria: power plant of the cell, have their own dna, double membrane. Matric citric acid cycle enzymes: glycolysis (anaerobic process)
