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quote:Originally posted by Desert_RoseThank you. I checked it out and I may be able to use it someday.I have actually found an answer, unfortunatly I don't speak or read "chemistry". So if you or someone on this fun forum could read it and translate it for me in "lay terms", I would be so appreciative...its chapter is titled "Factors affecting Enzyme Action." users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Enzymes.htmlThanks againJoanne
quote:The activity of enzymes is strongly affected by changes in pH and temperature. Each enzyme works best at a certain pH (left graph) and temperature (right graph), its activity decreasing at values above and below that point.
quote:Hydrogen bonds are easily disrupted by increasing temperature. This, in turn, may disrupt the shape of the enzyme so that its affinity for its substrate diminishes. The ascending portion of the temperature curve (red arrow in right-hand graph above) reflects the general effect of increasing temperature on the rate of chemical reactions (graph at left). The descending portion of the curve above (blue arrow) reflects the loss of catalytic activity as the enzyme molecules become denatured at high temperatures.