scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 1,027
For my investigation I plan to examine the effect temperature has on enzyme action involving the biological catalyst- diastase and its substrate- starch In lesson I have conducted a preliminary experiment to give me an idea of what to expect and a chance to conduct the experiment before hand From my preliminary work I believe that an equal amount of substrate Starch with an equal amount of enzyme Diastase should finish reacting at around 90-120 seconds Also I have learned that an enzyme is a globular protein with a tertiary structure of polypeptides- this gives the enzymes their active site shape I also know how enzymes work- there is the lock and key theory which suggests one enzyme for one substrate with the active site being the correct shape but also the induced fit theory which suggests enzymes are loose and adjust their shape to fit over the substrate From my studies I learn that there are factors which affect enzymes- these include pH temperature substrate concentration and enzyme concentration Most enzymes work best at a neutral pH of 7 or a slightly alkali pH of around 8-9 Though there are exceptions such as Pepsin which works best at acidic pH 2 The temperature also effects the enzyme activity- most enzymes are mesophiles which have optimum temperatures of 20-40C Others are thermophiles which are optimum above 40C whereas others are psychrophiles which work best below 20C Also affecting the rate of reaction is the concentration of enzymes- the more enzymes there are the more likely the substrate will collide with an enzyme- so the more enzymes available the faster the reaction On the other hand if there is more substrate the reaction will be fast for a while but then the saturation point will occur and the reaction rate will slow This has led me to suggest that the diastase enzyme will work best at a neutral pH and at a temperature around 40C This
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA