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BIOE120 week 4 notes

by: Hayat Jabbour

BIOE120 week 4 notes BIOE120

Hayat Jabbour


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About this Document

thermodynamics and week 4 notes
Biology for Engineers
Dr. Jones
Class Notes
25 ?




Popular in Biology for Engineers

Popular in Biology

This 2 page Class Notes was uploaded by Hayat Jabbour on Monday September 26, 2016. The Class Notes belongs to BIOE120 at University of Maryland - College Park taught by Dr. Jones in Fall 2016. Since its upload, it has received 8 views. For similar materials see Biology for Engineers in Biology at University of Maryland - College Park.


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Date Created: 09/26/16
Bio Notes: -Sequences determines structure determines function Four functions: Binding Structural element Allosteric switching Catalysis -Protein in active state=native state Unfolded state=denatured state -Causes of denaturing: High Temperature pH detergents salt addition reducing agents to break disulfide bonds -Folding of a protein In vitro (outside of normal biological envionmet, long process) In vivo (within organism) Few minutes or less efficiently as theyre synthesized -Bioenergentics(Thermodynamics):  System vs. surroundings  Open, closed or isolated systems  Open: transfer of mass and energy (humans)  Closed: transfer of energy (earth)  Isolated: no mass or energy is transferred (cell in isolated box) -First law of thermodynamics: Energy is not created or destroyed, but can be transferred between a system and its surroundings Enthalpy(H)- amount of energy in system available to transfer to surroundings Delta (H)- change in enthalpy -2 Law Inspontaneous changes the universe tends toward greater state of disorder Entrapy(S)- a measure of the dispersal of energy or matter Delta(S)- change in entrapy -3 Law If a process releases heat, some energy can be used to do useful work but some may be expended to increase order of a system If a system becomes more disordered, more useful energy becomes available than the energy given from reaction alone Gibb’s free energy: G=H-TS Free Energy change: ΔG= Δ H – T Δ S Change in entrapy of universe = change in entrapy of surroundings + change in entrapy of system >0


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