Enzyme activityCan you please briefly explain A biologist performed two series of experiments on lactase, the enzyme that hydrolyzes(hydrolysis reactions) lactose to glucose and galactose. First, she made up 10% lactose solutionscontaining different concentrations of enzymes and measured the rate at which galactose wasproduced (grams of galactose per minute). Results of these experiments are shown in Table A.In the second series of experiments (Table B), she prepared 2% enzyme solutions containingdifferent concentrations of lactose and again measured the rate of galactose production.a. Graph and explain the relationship between the reaction rate and the enzymeconcentration.b. Graph and explain the relationship between the reaction rate and the substrateconcentration. How and why did the results of the two experiments differ? Table A: Rate and enzyme concentrationLactose concentration 10% 10%Enzyme concentration 0%Reaction rateLactose concentration 0%Enzyme concentration 2%Reaction rate25Table B: Rate and Substrate Concentration05%2%10%252%5010%2%5010%4%10020%2%6510%20030%2%65(gram of galactose per minute)

Answered: a. Graph and explain the relationship…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Enzyme activity Can you please briefly explain

A biologist performed two series of experiments on lactase, the enzyme that hydrolyzes
(hydrolysis reactions) lactose to glucose and galactose. First, she made up 10% lactose solutions
containing different concentrations of enzymes and measured the rate at which galactose was
produced (grams of galactose per minute). Results of these experiments are shown in Table A.
In the second series of experiments (Table B), she prepared 2% enzyme solutions containing
different concentrations of lactose and again measured the rate of galactose production.
a. Graph and explain the relationship between the reaction rate and the enzyme
concentration.
b. Graph and explain the relationship between the reaction rate and the substrate
concentration. How and why did the results of the two experiments differ?

Table A: Rate and enzyme concentration
Lactose concentration 10% 10%
Enzyme concentration 0%
Reaction rate
Lactose concentration 0%
Enzyme concentration 2%
Reaction rate
25
Table B: Rate and Substrate Concentration
0
5%
2%
10%
25
2%
50
10%
2%
50
10%
4%
100
20%
2%
65
10%
200
30%
2%
65
(gram of galactose per minute)

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In biology, chemical reactions are often supported by enzymes, biological molecules made of proteins that can be thought of as facilitators or catalysts. Enzymes speed up the reaction or allow it to proceed at lower energy levels and are available again once the reaction is complete. In other words, they are not consumed by the reaction and can be reused. Enzymes usually work efficiently at a specific temperature and pH. Outside this zone, they are less effective. At very high temperatures, enzymes, because they are made of proteins, can be denatured or destroyed.

Thus, the single most important property of enzymes is the ability to increase the rate of reactions occurring in living organisms, a property known as catalytic activity.

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