CHEMICAL_REACTIONS - ∆ G or ∆ G = ∆ H T ∆ S ∆ G =...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEMICAL REACTIONS: When two or more atoms, ions, or molecules collide in such a way that they produce a new substance. * All chemical reactions are governed by the laws of Thermodynamics, 1st 2nd Types of Chemical Reactions (Spontaneous versus Non-spontaneous) Spontaneous reaction is one which can occur without outside help. (Exergonic) Non-spontaneous reaction needs outside help. (Endergonic) Free Energy (G) Energy "free" and available to do useful work in the cell in all spontaneous reactions: G- (free energy in the systems decreases) exergonic
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
in all non-spontaneous reactions: G+ (increases) endergonic therefore the question of interest to us: is
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ∆ G (+ or -) ?? ∆ G = ∆ H - T ∆ S ∆ G = change in free energy ∆ H = change in enthalpy T = temperature Kelvin ∆ S = change in entropy Chemical Reactions in living systems Maintenance and reproduction of living systems requires chemical reactions in cells 1) Chemical reactions in. .. non-living world living systems 2) In living systems this is accomplished by * External energy source * Organic catalysts: ENZYMES: Structure Function MODEL OF ACTIVITY: General Model of Enzyme catalysis: Specific Model of Enzyme Catalysis: Induced-fit Hypothesis ENZYME REGULATION: Competitive inhibition: Non-Competitive Inhibition: Allosteric Inhibition:...
View Full Document

This note was uploaded on 02/14/2011 for the course BIOL 1201 taught by Professor Wishtichusen during the Spring '07 term at LSU.

Page1 / 3

CHEMICAL_REACTIONS - ∆ G or ∆ G = ∆ H T ∆ S ∆ G =...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online