Cell Organelles Chapter 3b I. Overview II. Organelles A. Nucleus 1. chromatin 2. chromosomes 3. nuclear envelope 4. nuclear pores 5. nucleolus B. Mitochondria C. Endoplasmic Reticulum 1. rough ER a. ribosomes 2. smooth ER D. Vesicles E. Golgi apparatus F. Lysosomes 1. endosomes a. endolysosomes 2. phagosomes a. phagolysosomes G. Peroxisomes H. Vacuoles I. Cilia & Flagella III. Cytoskeleton A. Microfilaments 1. actin B. Intermediate fibers C. Microtubules 1. tubulin D. Centrioles 1. basal bodies