MICR 2420 Study Guide - Final Guide: Antonie Van Leeuwenhoek, Sergei Winogradsky, Lynn Margulis
Document Summary
Microbes = general term for any microscopic organism. Change environment and make it possible for eukaryotes. All but plants and animals are microbial on the tree of life. Bacteria cells do not have mitochondria or chloroplast do everything in cell membrane. Reading chapter 1: a1a, b-c, b2f; b3; b4b-d; c2a. Revolutionized the way we classify and identify life on earth: tree of life; based on rrna. Each subunit is made of protein and rna. Looked at rrna to see how things are related. Do not have many mutations if any. Function is so essential it doesn"t change over time. Least number of changes is oldest rrna= molecular clock: can know when mutations became fixed, very few become fixed, achaea are whole new form of life. About 99% microbes have yet to be isolated. Understand when genes are expressed and physiology. Since mid 1600"s we"ve known most microbes were microscopic.
