LIFE 102 Lecture Notes - Lecture 7: Peroxisome, Phagocytosis, Hydrolysis
Document Summary
The nucleus contains most of the dna in a eukaryotic cell (library) Contains most of cell"s genes and is usually the most conspicuous organelle. Pores regulate the entry and exit of molecules from the nucleus. The shape of the nucleus is made by the nuclear lamina, made up of proteins. In the nucleus, dna and proteins form genetic material called chromatin. The nucleolus is located within the nucleus and is the site of ribosomal rna (rrna) synthesis. Ribosomes are particles made of ribosomal rna and protein. Ribosomes carry out protein synthesis in 2 locations: On the outside of the endoplasmic reticulum or the nuclear envelope (bound ribosomes) Ribosomes use the information from the dna to make proteins (factory) These components are either continuous or connected via transfer by vesicles. The endoplasmic membrane (er) accounts for more than half of the total membrane in many eukaryotic cells. The er membrane is continuous with the nuclear envelope.
