BIOL 152 Lecture 1: Chapter 27 objectives
17 Sep 2018
Department
Course
Professor
Document Summary
Chapter 27: understand the differences between the two domains, archaea and bacteria and the domain eukaryote. Arhcaea+bacteria: cell wall, small, fast replication through binary fission, no nucleus or membrane bound organelles. Eukaryote: bigger, divide through mitosis, have true nucleus and membrane bound organelles: know the four main groups of archaea: methanogens, halophiles, thermoacidophiles, and acidophiles, explain how archaea and bacteria can live in extreme environmental conditions. Akinetes: filaments that help filamentous cyanobacteria survive winter. Endospores: tough protein coats, help in living dormant: explain three mechanisms of horizontal gene transfer. Transduction: phage injects dna information (via viral vectors) Conjugation: mating with another cell, sex pilus attaches to another cell and transfer genetic information: distinguish between vertical and horizontal gene transfer. Horizontal two different species: know and recognize subcellular structures. Thylakoids, magnetosome (magnetic crystal), gas vesicles (for vesicles): classify and recognize bacteria based on shape and cell wall structure. Cocci (sphere), bacilli (rod), vibrios (comma-shaped), spirilli (spiral shaped).
