2005_campbl18 - Important Point: Microbiology is the...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 18: The Genetics of Viruses and Bacteria Important Point: What is Microbiology? ± Microbiology is the science that studies microorganisms ± Microorganisms, roughly, are those living things that are too small to be seen with the naked eye ± Microorganisms cannot be distinguished phylogenetically from “Macroorganisms”, e.g., includes fungi as well as bacteria, etc. (that is, they are not, as a whole, a closely related group of organisms) ± Microbiology is more a collection of techniques: Aseptic technique, Pure culture technique, Microscopic observation of whole organisms, etc. ± A microbiologist usually first isolates a specific microorganism from a population and then cultures it Importance of Microbes ± Microbes are produces—they provide energy to ecosystems ± Microbes are fixers—they make nutrients available from inorganic sources, e.g., nitrogen ± Microbes are decomposers—they free up nutrients from no longer living sources ± Microbes form symbioses (such as mycorrhizal fungi associated with plant roots—though these are somewhat macroscopic; also the bacteria found in legume root nodules, etc.) ± Microbes serve as emdosymbionts (e.g., chloroplasts and mitochondria) ± Microbes make fermentation products (ethanol!), food (beer! Cheese! Yogurt! Half-sour pickles!), Biotech products (e.g., recombinant insulin), etc. ± Germ theory of disease; Normal flora
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

2005_campbl18 - Important Point: Microbiology is the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online