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Life Sciences
Lab Report
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How do substrate concentration and pH affect enzyme-controlled reaction (Lab Report Sample)


The lab report should have the following sections: Introduction, explaining any appropriate background information that is needed to understand the experiment. Results, detailing the outcome (data) of the experiment and a Discussion that interprets the data. Be sure to submit your project in one WORD document in APA format 1)Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases? 2)What is the maximum initial reaction rate for this enzyme at pH 7? 3)Explain why the maximum initial reaction rate cannot be reached at low substrate concentrations. 4)What does your data indicate about the optimum pH level for this enzyme-catalyzed reaction? Click on this link for more information 5)Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in temperature can significantly lower the reaction rate. What does this suggest about the importance of temperature-regulating mechanisms in organisms? Explain. Discussion question type it at the bottom of page 2 The enzyme “RNA polymerase” is needed to transcribe DNA into mRNA…which is then translated into proteins (such as the polymerase). But the genetic code for this enzyme protein is within the DNA. So how did polymerase ever come into existence? How would the first polymerase have been transcribed (and then translated) if there was not yet a polymerase in existence to do the transcribing? (275 words)


Lab report: how do substrate concentration and ph affect enzyme-controlled reaction
Date of submission
Enzymes are organic catalysts that speed up a reaction and produce an ordered, stable reaction system. Products of the reaction are formed depending on the requirement of the experiment. Each specific enzyme controls each reaction in a series of metabolic reactions.
Sequence of enzyme-controlled reactions is as follows;
Substrate+ enzyme=enzyme-substrate complex=enzyme+ products
Background information:
Reactions are important and necessary in various chemical and biological processes. Enzymes are used to catalyze reactions, hence reducing the time taken to complete a reaction. Enzymes were first discovered in the 18th and 19th century in the manufacture of beer. Other enzymes were later discovered during biological tests in the study of human physiological processes. Enzyme amylase is one of the enzymes facilitates the human digestion in the human gut.
The purpose of the experiment is to determine the effects of substrate concentration and pH on the initial rate of an enzyme-catalyzed reaction. This will be done by virtual simulation. Each test tube used for simulation contains the same amount of enzyme solution. The pH levels are adjusted, or some amount of the substrate is added to collect the necessary data.
Number of Molecules of Product Formed per Minute (x106)Amount of Substrate (g)pH 7pH 3pH 11Test Tube 10.5721924Test Tube 21.01453949Test Tube 32.030082103Test Tube 44.035096121Test Tube 58.035096121Table  SEQ Table \* ARABIC 1: Table of results with change in the substrate concentration

Table ...
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