01:070:111 Lecture Notes - Lecture 11: Montmorillonite, Rna-Dependent Rna Polymerase, Transfer Rna
27 Mar 2018
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Document Summary
Cladogenesis- macroevolutionary process leading to adaptive radiation. Orthogenesis- cultural change over time, born in a specific direction with an endpoint. Metabolism- chemical reactions needed to maintain life. It is alive if it can evolve by natural selection. -the dual nature of. At some point, we need a way for chemicals to replicate themselves. Need organics (they have carbons which can become polymers, chains) Primordial soup + energy = amino acids. Dna transcription mrna translation trna protein synthesis. Catalyze (trigger, help, control) the synthesis of new dna strands from a dna template strand. Need dna polymerase to have dna replication (polymerization) With help, dna can be replicated and used to make proteins. First replicator should be a self replicator. Also called rna enzyme or catalytic rna. Rna that can catalyze a chemical reaction. Tetrahymena ribozyme cuts longer strand of rna into two pieces. Replicase- rna enzyme that replicates other rna.
