BIOL 111 Lecture Notes - Lecture 3: Nuclear Membrane, Isoprene, Peptidoglycan

• School: McGill University
• Department: Biology
• Course: BIOL 111
• Professor: Rudiger Krahe

Document Summary

Biol 111 lecture 3 diversity of life & prokaryotes . Lecture date/time: sept 17th, 2015 / 10:35-11:25 am. Biodiversity; degrees of difference in genetic variation, species composition, & function (ex. biochemical pathways/metabolism) Species diversity: measures both # of species in a habitat & their relative abundances. More than 1. 5million species have already been named, & ~13,000 more are named of insects, thus is about of all species (see pie diagram) every year (3000) are synonyms/duplicated species. 1983: terry erwin researched and found 160 beetle species unique to that one tropical tree species. ^since there are ~50,000 tropical tree species, (160 x 50,000 = 8 million beetle species) beetles make up. 99% of all species are extinct, thus we are part of that ever-changing remaining 1% and are likely to also become extinct one day. 3-100 million living/extant eukaryotic species number of bacteria and archaea is completely unknown, around 10,000 are identified but it could be millions or 100"s of millions.