Enzyme Lab Write Up
Introduction
Enzymes are proteins that are involved in all the chemical processes in living things. As they are made of proteins they are affected by pH and temperature. Enzymes are catalysts; they speed up chemical reactions without being changed themselves. Digestive enzymes speed up the breakdown of large food molecules into smaller ones so that the blood can absorb them. Enzymes turn a large starch molecule into thousands of tiny glucose molecules. Enzymes end in 'ase'. There are thousands of enzymes in our body but each enzyme is only specialised to do one thing, for example carbohydraise enzymes digest carbohydrates, protease enzymes digest protein.
Prediction
I predict that the amylase will digest the starch the best and the quickest at around room temperature, (35 C-45 C). I have come to this prediction because I think that enzymes are more active …show more content…
We then repeated this in two more test tubes. We put one of the test tubes in ice (0 C) we put another in the water bath (42 C) then we put one in boiling water (100 C). We repeated the same thing for the boiled amylase. We then checked at five minutes to see if the starch had been digested by the amylase. We did this by putting a little of each of the six samples into a spotting tile. We then added iodine solution to this to see if starch was present or not. I could tell if starch was present or not because if the solution went orange it meant that there was no starch present, so all the starch had been digested, if the solution went blue/black it meant that there was starch present, so the starch had not been fully digested. We recorded the results in a table. We then waited another two minutes so that all together the starch solution had been in there seven minutes. We did exactly the same thing as we did at five minutes we also recorded these results in a
Enzymes are proteins that are involved in all the chemical processes in living things. As they are made of proteins they are affected by pH and temperature. Enzymes are catalysts; they speed up chemical reactions without being changed themselves. Digestive enzymes speed up the breakdown of large food molecules into smaller ones so that the blood can absorb them. Enzymes turn a large starch molecule into thousands of tiny glucose molecules. Enzymes end in 'ase'. There are thousands of enzymes in our body but each enzyme is only specialised to do one thing, for example carbohydraise enzymes digest carbohydrates, protease enzymes digest protein.
Prediction
I predict that the amylase will digest the starch the best and the quickest at around room temperature, (35 C-45 C). I have come to this prediction because I think that enzymes are more active …show more content…
We then repeated this in two more test tubes. We put one of the test tubes in ice (0 C) we put another in the water bath (42 C) then we put one in boiling water (100 C). We repeated the same thing for the boiled amylase. We then checked at five minutes to see if the starch had been digested by the amylase. We did this by putting a little of each of the six samples into a spotting tile. We then added iodine solution to this to see if starch was present or not. I could tell if starch was present or not because if the solution went orange it meant that there was no starch present, so all the starch had been digested, if the solution went blue/black it meant that there was starch present, so the starch had not been fully digested. We recorded the results in a table. We then waited another two minutes so that all together the starch solution had been in there seven minutes. We did exactly the same thing as we did at five minutes we also recorded these results in a