BIOA01H3 Lecture Notes - Lecture 14: Microsoft Onenote, Ribosomal Rna, Lipid Bilayer

• School: UTSC
• Department: Biological Sciences
• Course: BIOA01H3
• Professor: Maydianne Andrade

Document Summary

The origins & chemical building blocks of life. The origin of life and the key attributes of a cell. Endomembrane system (composed of the different membranes that are suspended in the cytoplasm within a eukaryotic cell) Theory of endosymbiosis (key organelles of eukaryotes originated as symbioses between single-celled organisms) 1 the theory of evolution by natural selection. All species, past and present, trace their ancestry back to a single common ancestor. 2 the cell theory: all cells are the basic units of life, all organisms are composed of cells, all cells come from pre-existing cells. ---> unity and diversity of life through evolution. Common ancestry of life: cells enclosed by lipid bilayer, genetic system based on dna, common system of information transfer - dna to rna to protein, protein assembly from amino acids by translation of messenger rna (mrna) and transfer.