Chapter 1-Intro to Microbio Flashcards
found in all environments, nearly 3.8 million years old, largest mass of living material on Earth, and cause diseases
microbes
mostly water (70%), dynamic and fundamental, both Prokaryotic and Eukaryotic
microbial cell
usually single celled, peptidoglycan wall, no membrane bound nucleus, produce lots of O2
Domain Bacteria
unique rRNA sequences, lack peptidoglycan cell walls, unique membrane lipids, usual metabloic characteristics, extreme environments
Domain Archaea
Algae, Protozoa, Slime Molds, Water Molds, Fungi
Domain Eukarya
smallest of all microbes, need a host to replicate
viruses
viruses, viroids, virusoids, prions
acellular infectious agents
What are the characteristics of life?
composed of 1 or more cells, high level of organization, respond to stimuli, adapt to environment, grow and develop, use energy, metabolism, regulation and homeostasis, reproduction
What is Microbiology?
study of microorganisms, acellular entities, prokaryotes and eukaryotes
What do all cells have?
cell membrane, cytoplasm, genetic material, ribosomes, RNA, enzymes
what do most cells have?
cell wall
conflict of spontaneous generation
living organisms can develop from nonliving or decomposing matter
experiment with long curved necks, exposed flask to air, no microbial growth, showed alcohol fermentations were results of microbial activity, pasteurization, vaccine for cholera and anthrax
Louis Pasteur
belief that certain diseases were caused by microorganisms, not immediately obvious due to lack of technique
Germ Theory
developed a system to prevent microorganisms in wounds after surgery, less post-op infection
Joseph Lister
