BIOL 20300 Lecture Notes - Lecture 2: Nucleolus, Telophase, Facilitated Diffusion

• School: Purdue University
• Department: Biological Sciences
• Course: BIOL 20300
• Professor: Bridges David,

Document Summary

Topics: cell membrane, cytoplasmic organelles, nucleus, movement of substances through the cell membrane, life cycle: interphase, mitosis, cytokinesis. Physiological processes: require energy: active transport, endocytosis, exocytosis. Made of phospholipid bilayer: incorporated protein molecules and cholesterol, polar: heads, non-polar: tails. Endoplasmic reticulum (smooth and rough: structure: membranes that form sacs and canals, function: transport materials (rough= ribosomes) Ribosomes: structure: composed of protein and ribosomal rna, function: synthesize proteins. Golgi apparatus: structure: flattened sacs, function: packages and processes proteins and other macromolecules for secretion. Mitochondria: structure: derived for bacteria, function: energy. Lysosomes: structure: vesicles, function: digesting substances ( garbage disposal ) Centrosomes: structure: 2 rod-like centrioles, function: distribute chromosomes. Cilia, flagella: structure: hair-like projections, function: motile. Microvilli: structure: fingerlike protrusions, function: increase surface area. Vesicles: structure: sacs, function: store newly synthesized molecules. Microfilaments and microtubules: structure: form meshwork in the cytoplasm, function: support cytoplasm.