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Chemistry of Biomolecules

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by

Mark Bremer

on 4 September 2014

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Transcript of Chemistry of Biomolecules

makeup of atoms & molecules, bonding
special qualities of water
role of functional groups
four types of biomolecules

Chemistry of Biomolecules
Atoms are building blocks
atomic nucleus made of protons (+), neutrons (o)
electrons (-) orbit around the nucleus in energy levels/shells (2,8,8)
elements have unique proton number
isotopes
Bonding makes molecules
covalent bonds
ionic bonds
hydrogen bonds
Biomolecules
Functional groups
additions affect fn or bonding
hydroxyl (-OH)
carbonyl (-C=O)
carboxyl (-COOH)
amino (-NH2)
phosphate (-PO4)
Water is special
polar covalent bonds create partial (+/-) charges on parts of each water molecule
water hydrogen-bonds to other waters (1:4) or any charged molecule or ion
cohesion
adhesion
solution- like dissolves like
density: liquid(water)>solid(ice)>vapor
heat buffer
pH
virtual molecular model kit
http://chemagic.com/JSmolVMK2.htm?rid=&echo=
lipids
fatty acids
steroids
phospholipids
proteins
amino acids
types of proteins
4 levels of protein structure
carbohydrates
(CH2O)n
monosaccharides
disaccharides
polysaccharides
nucleic acids
sugar-phosphate backbones
nitrogenous base pairs
Full transcript