BCHS 3304 Lecture Notes - Lecture 1: Archaea, Ammonia, Hydrolysis
23 Aug 2016
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The earth is approximately 4. 6 billion years old. The first fossil was found approximately 3. 5 billion years ago. The early atmosphere consisted of: mainly: h2o, n2, co2, trace amounts: ch4, nh3, so2, h2. Sparking a mixture of simple molecules complex molecules. Condensation= useful to increase biological complexity: a water molecule is lost. Hydrolysis= the reverse of condensation: a molecule is broken/ cleaved through the addition of a water molecule. Complementary molecules associate: functional groups pair up, the more complex the molecule, the more versatility. Advantageous, because it provides protection: prokaryotes= no membrane bound nucleus or organelles. More related to eukaryotes than bacteria are: eukaryotes= membrane bound nucleus that contains dna. Can be 10-100 micrometers long: viruses= not a eukaryote or prokaryote; they are not alive. Evolution: consists of random changes- like mutations. There is no specific goal: more variety means there is a greater chance of survival, you derive new traits/organisms from the old, organisms are constantly evolving.
