Catalysts are substances that reduce the activation energy of a chemical reaction, facilitating it or making it energetically viable. The catalyst increases the speed of the chemical reaction. What amount of catalyst is consumed in the reaction it catalyzes? Catalysts are not consumed in the reactions they catalyze.
Volume of sodium carbonate Assumption: Assume that the concentration of the lipid inside every 5mL of milk are the same. Assume that the concentration of the lipase in every 1mL are the same.
Assume that there are no substances in side the milk will reacts with the sodium carbonate and phenolphthalein. Measure 1mL of lipase using 1mL pipette with pipette filler, 7mL of sodium carbonate and 5mL of milk using 10mL of pipette with pipette filler.
Pour the content into the test tube. Repeat the step for 4 times. Put the test tube containing enzyme, milk, sodium carbonate and an empty boiling tube in water bath in respectively.
In order tho make all the solutions reach equilibrium. Mix milk and sodium carbonate, in the empty boiling tube then add 5 drops of phenolphthalein. The solution should be pink. Pour 1mL of enzyme in the boiling tube and start timing.
Through out the processes, keep on shaking the boiling tube to let the enzyme reacts with the milk. Stop the stop watch when the mixture inside the boiling tube changes to the colour of the milk.
Sodium carbonate is an alkaline which is harmful. Should wear safety goggles. Paying attention in handling hot water and ice. Should using towel in transferring hot water and ice. Limitations Improvements There are some changes in temperature through out the experiment, which might affect the activity of the enzymes or it might cause denature at a very high temperature.
A more advanced advice is needed to maintain a certain temperature for the reaction between the lipase and the lipids.
Since the phenolphthalein only would change to colourless when the solution becomes acidic or neutral, which can not be obvious for the colour change, resulting an error in the result?
A pH meter is needed to have a more accurate result for the investigation. According to the results, it shows that it take a longer time at an extreme temperature or even denature at a high temperature. As the lipase is in a very hot temperature, since the enzymes was made up of protein, which is easily be digested or even denatured, resulting there are no lipids can be broken down by the lipase.
And the results would show that the lipid would be unable to be broke down. Which can explains that the food substances are digested in our body at the fastest rate. More essays like this:Enzymes are generally globular proteins, acting alone or in larger initiativeblog.com sequence of the amino acids specifies the structure which in turn determines the catalytic activity of the enzyme.
Although structure determines function, a novel enzymatic activity cannot yet be predicted from structure alone. Enzyme structures unfold when . As the temperature passes the threshold of the optimum, it results in a faster enzyme activity loss than what the initial rate can measure; therefore, the equilibrium of the active and inactive form the enzyme is a valid assumption.
of the enzyme much like a change in temperature does, with similar effects on enzyme activity. The Lab In this lab, students investigate the activity of the enzyme diastase, and examine the effects of enzyme. activity measured at temperature of 40oC and pH ÷ At low temperatures, protein, glucose, At low temperatures, protein, glucose, and other components of the crude extract present a protection effect to enzyme.
The purpose was to study the effect of temperature of enzyme functioning. The major finding was that at 87°C the amylase broke down the starch the fastest. The other temperatures (4°C, 25°C, 37°C) didn’t break down starch until 10 minutes while 87°C broke down starch in 5 minutes. 48 Factors Affecting Enzyme Activity by John Eed (Biology ) Abstract: e studied the effect of temperature, enzyme concentration and pH on enzyme activity.