BIOL 1202 : TEST TWO STUDY GUIDE
Document Summary
Microbes: organisms too small to be seen clearly without a microscope: prokaryote microbes: 0. 2-1. 0 micrometers in diameter, unicellular eukaryotic organisms, 10-100 micrometers, of kingdom protista. Other biological entities : viruses, viroids, and prions: even smaller than bacteria, not organisms because they don"t have the characteristics of living organism. It infects primarily plant cells (citrus trees, potatoes, avocados) Journal science^: good place to be published, very hard to be published in, gives good model organisms for testing disease treatments. Prokaryotes: archaea and bacteria domains, 1st organisms to appear on earth, 3. 5 billion years ago (4 billion, 14000 species described, may be 100-1000x that number, most bacteria do not cause human disease. Only a small number of bacteria are capable of causing human disease. But, there are a few bacteria that kill people around the world every year: have circular chromosomes. Bacteria lots of questions on the characteristics of bacteria* Gram stain - a staining technique used for the identification of bacteria.
