MICR-3050 Study Guide - Quiz Guide: Alpha Diversity, Streptococcus, Quorum Sensing
8 Apr 2018
School
Department
Course
Professor
Document Summary
Chapter 20. 1 20. 4 (21. 3, 23. 13: define ecosystem, population, community, habitat, guild, and niche. Ecosystem is the culmination of the abiotic and biotic factors in the environment. Population is a group of organisms belonging to the same species. For microbes this refers to the same species in the same place at the same time. Often times the population descends from one cell. Community consists of two or more cell populations coexisting together in one location. Habitat is the portion of the ecosystem where a population can reside. This part of the ecosystem is best suited for the population. Guild is a group of microorganisms that are metabolically related. Niche is a habitat shared by multiple guilds. The prime niche for a population is the location in the ecosystem where the organism thrives and dominates. These concepts are related in the following way: Cell => population => guild => community =>ecosystem. The niche a microbial population belongs to depends on their guild.
