Enzymes are proteins that catalyze (speed up) chemical reactions. During these reactions, the enzymes are not altered, and are continually reused until the chemical reaction they are catalyzing reach a stable equilibrium.
The catalytic effect of enzymes is determined by several factors. Temperature, pH, concentration of enzyme and other factors can speed up or slow down the reaction.
A group of students investigated the effects of temperature and pH on amylase, an enzyme found in saliva that catalyzes the breakdown of starches.
Starch can be broken down into glucose, a simple sugar. Glucose can be detected by using an indicator reagent that turns from blue to orange in the presence of glucose and heat.
The group of students combined starch, amylase and water of varying temperatures. After 3 minutes, the indicator reagent was added and the color was recorded in Table 1.
The students combined starch and amylase, and then added various amounts of hydrochloric acid, HCL. They then used the indicator reagent as in Experiment 1. The results are shown in Table 2.
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Based on Table 1, amylase best functions at a temperature of:CorrectIncorrect
According to the passage and Table 2, why was there no color change recorded at a pH of 2 and ph of 12?CorrectIncorrect
The students repeated Experiment 1 at a new temperature and noted no color change. This temperature could have been:CorrectIncorrect
According to Table 1, as temperature increase, the function of amylase:CorrectIncorrect
An enzyme’s optimal conditions are those at which the enzyme is function at its maximum rate. Based on this information and Table 1 and Table 2, the optimum temperature and pH of amylase are:CorrectIncorrect