BIOL 1002 Chapter : Bio
Document Summary
Viruses are neither prokaryotes nor eukaryotes: not living things. Microbes- too small to be seen clearly without a microscope: unicellular things (viruses, bacteria, archae, unicellular eukaryotes (protists, yeast) Microbes: prokaryotes- range in size 0. 2-10. 0 um (bacteria, archea, unicellular eukaryotes- range in size 10-100 um (protist, viruses. How big is a um or micrometer : 1/1,000,000 of a meter, period at the end of this sentence is about 100 um. Which organisms are members of the domains archaea and bacteria: bacteria and archaea domains, 1,200 species described. May be 100-1,000 times that: 1st organism to appear on earth- 3. 9 to 4. 1 billion years ago. The bacteria that we know most about is pathogens that affect us or our food: ecoli. Bacteria and archaea have three things in common: (still different domains: very small (microbes, prokaryotic, single-celled. 3 differences between bacteria and archaea: cell membrane lipid structure, cell wall compostion, rrna subunit sequences.
