KIN 3515 biochemistry

13 theconcentrationofachemicaldetermines

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Unformatted text preview: .12 The Mole Concept What is a Mole? q Not a furry rodent with poor eyesight q One mole (mol) = 6.02 X 1023 q You can have one mole of anything Chemical concentration q expressed as mol/L q 1 millimol/L (mM) = 0.001 moles in 1 L of solution q 1 micromol/L (µ M)= 0.000001 moles in 1 L Other ways of expressing concentration q mg of glucose /100 mL blood = mg of glucose /dL blood = mg% q mmoles/kg muscle q g/100 mL blood = g/dl = g% q mEq K/100 mL (mmol/L of charges) The Mole Concept .13 The concentration of a chemical determines: – the extent to which the chemical diffuses across a membrane – the extent to which the chemical participates in chemical reactions The "Law of Mass Action" If there is lots of A & B: A + B C + D If there is lots of C & D: A + B C + D Enzymes 4.14 – What are Enzymes? What do they do? – proteins – regulate the speed of reactions – do not make reactions occur How Awesome are Enzymes? – They increase rxn rates by at least a million times – Carbonic Anhydrase H2CO3 ­­­­­­> CO2 + H2O speeds up the rxn by 10,000,000 times dehydrates 105 molecules of H2CO3 in one second .15 Enzymes...
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This note was uploaded on 01/20/2014 for the course KIN 3515 taught by Professor Nelson during the Fall '09 term at LSU.

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