BIO153H5 Lecture Notes - Lecture 5: Proteobacteria, Mitosis, Endoplasmic Reticulum
Document Summary
Foreminifera (foramen = window or hole, fer = carrying or bearing) Produce the material used in the pyramids, white cliffs of dover. Protists form the basis of aquatic food chains in rivers, lakes, oceans. Their wellbeing as a species affects the wellbeing of species higher up in the food chain. The rest of the course deals with eukaryotes: Know the difference between bacteria, archaea, and eukarya. All have a cell nucleus - looked like a nut within a cell. Many, many protists which are a paraphyletic group. Monophyletic - the entire branch is the group and is the entire group. Snip test - with one snip, cut off only that group and all of that group. Paraphyletic - all the descendants are in a branch but part of the branch is not part of the group. The branch includes more taxa than it should. Polyphyletic - the descendants are spread over multiple parts of the tree.
