MCDB 1A Lecture Notes - Lecture 1: Polymerase Chain Reaction, Rna Splicing, Intermembrane Space
6 Mar 2018
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Document Summary
Biology is the scientific study of living things. Cells are complex chemical systems that contain all information necessary to grow and reproduce at the expense of energy. Present day cells share common properties, a result of 3 billion years of evolution. Hydrogen, oxygen, nitrogen and carbon most well suited for biology. Oxygen, nitrogen and carbon readily form double bonds (differing bond angles) Carbon can form single, double and triple bonds with itself. Carriers of atp, used in protein synthesis and redox reactions. H-bonds can form when h is aligned in a straight line between 2 electronegative atoms, oxygen or nitrogen. Polar covalent bond e- shared unequally because of oxygen"s electronegativity. Nonpolar molecules are more attracted to one another than water. To minimize unfavorable forces and maximize weak forces. High energy bonds release lots of energy when broken; often just use outermost phosphate. Membranes for intracellular organelles: nucleus, mitochondria, er, golgi, lysosomes, etc. important energy storage material.
