Tuesday, September 29, 2009
Tues-Day 1
Bio 3/6- we discussed some of the factors that can affect the rate of enzyme activity.
We focused on the effect of temperature on an enzyme: at low temperatures, the enzyme retains its natural 3-D shape so that it can speed up the reaction of the substrate molecule(s) when it collides with and binds them; at low temperatures, though, this collision rate is low so the overall enzyme activity rate is low.
As temperature increases, both enzyme and substrate molecules move faster and collide more frequently so the rate of enzyme activity increases.
However, beyond a given enzyme's optimum/optimal temperature, the enzyme moves too fast and collides with even greater forces causing it to unravel/denature and lose its shape and its active site.
AP Chem- we discussed some of the top errors on the stoichiometry exam- these errors can and should be avoided by frequently practicing, especially within a few hours after class, the various problem types using the efficient and simpler methods used in class.
We then started a solution stoichiometry analysis problem using a redox titration setup.
We focused on the effect of temperature on an enzyme: at low temperatures, the enzyme retains its natural 3-D shape so that it can speed up the reaction of the substrate molecule(s) when it collides with and binds them; at low temperatures, though, this collision rate is low so the overall enzyme activity rate is low.
As temperature increases, both enzyme and substrate molecules move faster and collide more frequently so the rate of enzyme activity increases.
However, beyond a given enzyme's optimum/optimal temperature, the enzyme moves too fast and collides with even greater forces causing it to unravel/denature and lose its shape and its active site.
AP Chem- we discussed some of the top errors on the stoichiometry exam- these errors can and should be avoided by frequently practicing, especially within a few hours after class, the various problem types using the efficient and simpler methods used in class.
We then started a solution stoichiometry analysis problem using a redox titration setup.
# posted by C @ 10:43 AM 
