BIO153H5 Chapter Notes - Chapter 28: Euryarchaeota, Gram Staining, Crenarchaeota
Document Summary
Bacteria and archaea have a profound impact on humans and global ecosystems. Bacteria and archaea have been evolving for billion of years and are extremely sophisticated organisms. Although they are small and relatively simple morphologically, they live in virtually every habitat know and use remarkable diverse types of compounds in cellular respiration and fermentation. Biologists study bacteria and bacteria and archaea for many reasons. Bacteria have a unique compound called peptidoglycan in their cell walls. Archaea have unique phospholipids compounds containing hydrocarbons called isoprenes in their tails in their plasma membranes. Microbes microscopic organism are bacteria or archaea, and virtually all are unnamed and undescribed. Microbiology the study of organisms that can be seen only with the aid of a microscope. Biologists study bacteria and archaea for many reasons. The ubiquity and abundance of bacteria make them exceptionally important in both human and natural economies. No archaea are known to cause disease in humans.
