BIOL 1002 Chapter : Chapter 19
Document Summary
While only about 5000 prokaryotic species have been described, there may be as many 5,000,000: prokaryotes range in size from 0. 2-1. 0 micrometers in diameter (see fig. The thickness of a dime is about 1 millimeter (1000 micrometers): the two domains appear similar in many respects however they are different in some very basic ways. One main distinction between the bacteria and the archaea is that the cell walls of. 19-1: the peptidoglycan cell wall of bacteria can be stained by a specific stain known as a. Some examples include: halophiles (salt loving) that inhabit the extremely salty dead sea and great salt. This may occur in the presence of oxygen (aerobic) or without oxygen (anaerobic). (or facultatively aerobic) Decomposers (saprotrophic): most of heterotrophs/ nature"s recyclers. Parasites: close association of 2 species/ one benefits at the expense of the other/ smaller inside larger. Mutualistic: close association of 2 species/ both species benefit (ex. Some are things that can make organisms sick.
