BIOL 102 Chapter Notes - Chapter 1-6: C4 Carbon Fixation, Carboxylation, Light-Independent Reactions
20 Aug 2016
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Document Summary
Relatively higher electronegativity draws electrons in slightly more negative, and hydrogen in water has a more positive charge. Hydrogen bonding: very important in chemistry of biology. Slight positive charge on hydrogen attracts slightly negative charge on oxygen. Hydrogen bonding happen between dna strands happen between nitrogenous bases. Individually they"re weak, but collectively, very strong bonding to create double helix. Van der waal forces: weak individually but strong collectively (help geckos) During physical interaction, there"s a conformational change between the molecules, rotations around bonds to make structural adjustment to fit substrate. Double and triple bonds are where rotation is constrained. When fully saturated, membranes can pack together to be less fluid, desaturation causes kinks to increase fluidity. Hydrophobic effect: hydrophobic groups wants to be shielded from water, so brought together as a mutual repulsion from water. Van der waals: between atoms between optimal distances. Disulfide bridge: cysteine residues contribute to protein folding.
