BIO 1130 Lecture Notes - Lecture 1: Lipid Bilayer, Octet Rule, Intermolecular Force

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Property of water allowing it water molecules to interact with other molecules, making cell-to-cell adhesion. Ex: water molecules sticking to walls of conducting tubes in plants. One of the 4 major eons in earth history (3. 8-2. 5 billion years ago) Bacterial life (prokaryotes) start to form, able to create proton gradients and energy to create atp, all anaerobically) One lineage figures out how to take proton off water (lots of energy, more than any other organism or mechanism). A biproduct of this is oxygen, so oxygen begins to accumulate. This only occurred once so whole ocean was dominated by this type of bacteria. Oxygen was toxic to other organisms, so they escaped to the bottoms of the oceans (to hot springs). Oxygen got absorbed by minerals, major period of continent formation. Contained carbon and formed organic compounds abiotically, later became more complex organic compounds. Ex: different types of acids, nucleic acids which form dna and proteins.