BIOL 102 Lecture Notes - Lecture 12: Genetic Recombination, Dna Replication, Cell Membrane
14 Feb 2017
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Utah"s great salt lake can reach a salt concentration of 32% Prokaryotes thrive almost everywhere, including places too acidic, salty, cold, or hot for. Its pink color comes from living prokaryotes most other organisms. Most prokaryotes are microscopic, but what they lack in size they make up for in numbers. There are more in a handful of fertile soil than the number of people who have ever lived. Prokaryotes are divided into two domains: bacteria and archaea. Structural and functional adaptations contribute to prokaryotic success. Most prokaryotes are unicellular, although some species form colonies. Most prokaryotic cells are 0. 5-5 um, much smaller than the 10-1000 um of many eukaryotic cells. Prokaryotic cells have a variety of shapes. The three most common shapes are spheres (coccus/cocci), rods (bacillus/bacilli), and spirals. An important feature of nearly all prokaryotic cells is their cell wall which maintains cell shape, protects the cell and prevents it from bursting in a hypotonic environment.
