BIO SCI 93 Chapter Notes -Pinocytosis, Fibronectin, Daniel Domscheit-Berg

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 93
• Professor: Diane O' Dowd

Document Summary

All cells: plasma membrane- selective barrier they are bounded by. Eukaryotes: dna found in nucleus, which is bounded by a double membrane, came before prokaryotes in evolutionary history, cytoplasm = region between the nucleus and the plasma membrane, much larger than prokaryotes. Prokaryotes: dna concentrated in a region that is not membrane-enclosed, called nucleoid. Many enzymes built right into the membranes. Basic fabric of biological membranes: double layer of phospholipid and other lipids: embedded in this lipid bilayer are diverse proteins. Endoplasmic reticulum- network of membranous sacs and tubes; active in membrane synthesis and other synthetic and metabolic processes; has rough (ribosome-studded) and smooth regions. Ribosomes- complexes that make proteins; free in cytosol or bound to rough er or nuclear envelope. Golgi apparatus- organelle active in synthesis, modification, sorting, and secretion of cell products. Mitochondrion- organelle where cellular respiration occurs and atp is generated.