Preview

Enzyme Project

Better Essays
Open Document
Open Document
1351 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Enzyme Project
BABS1201 Group Enzymes Project
Group Protocol Including Equipment and Reagents List

Lab Day: Wednesday
Lab Time: 10am – 1pm
Are you in Lab G20 (furthest from BSB Student Office) or Lab G21 (closest to BSB Student Office)?:
Demonstrator Name: Daniel Winters
Names of Group Members: Johnny Nguyen, Therese Pham, Linda Tang
Name of Enzyme You are Investigating: Amylase
Brief Background:
Amylase is a digestive enzyme, produced mainly by the salivary glands and the pancreas, to break down starch in food into smaller carbohydrate molecules and disaccharides such as maltose. It can be found in humans and some other mammals. Some plants and bacteria may also produce amylase. After being broken down into smaller carbohydrate molecules, it can be converted into a monosaccharide such as glucose, which fuels processes for organism function. There are two variations of this molecule but the human body has alpha amylase. Food that contains large amounts of starch will have a slightly sweet taste when chewed because of this breaking down of starch into sugar by amylase. Alpha Amylase 's official name is 1,4-a-D-Glucan glucanohydrolase; EC 3.2.1.1. It breaks down starch into maltose via hydrolysis. Amylase is folded into a tertiary shape and has an area called the “active site” where the substrate, carbohydrate, is broken down. Its structure consists of a single chain of amino acids, which forms three distinct regions called domains, where each domain has a specific biological function assisting in the breakdown of carbohydrates. Several amylases require the presence of a cofactor to function. A cofactor is a chemical species necessary for the enzyme to function but does not necessarily undergo chemical reaction. Amylase requires calcium and chloride ions for activity in animals and plants. The amylase from the bacteria Bacillus subtilis contains zinc ions.
Hypotheses:
Substrate Concentration
In the more concentrated starch solution, there will be an increase in



References: http://www.eng.umd.edu/~nsw/ench485/lab5.htm http://www.123helpme.com/view.asp?id=121479

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Enzyme Lab Quiz

    • 293 Words
    • 2 Pages

    11. Amylase catabolizes starch polymers into smaller subunits. Most organisms use these saccharides as a food source and to store energy. Amylase can be found in the saliva of humans and other mammals. (starch > sugar)…

    • 293 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Metabolic Race

    • 528 Words
    • 3 Pages

    When carbohydrates are consumed during a meal, catabolism originates in the mouth. The salivary enzyme α-amylase breaks down the carbohydrates through the hydrolysis of the α1->4 glycosidic bonds. This is followed by the further breakdown of the complex polysaccharides in the small intestine down to monosaccharides units in order for the glucose to be absorbed directly into the bloodstream.…

    • 528 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Biology Quiz Paper

    • 1178 Words
    • 5 Pages

    | | The most important source of nitrogen entering the body is from: | | | Student Response | Value | Correct Answer | Feedback | A. | nucleic acids. | | | | B. | amino acids contained in dietary protein. | 100% | | | C. | urea. | | | | D. | ammonia.…

    • 1178 Words
    • 5 Pages
    Satisfactory Essays
  • Good Essays

    Enzyme Lab

    • 1242 Words
    • 6 Pages

    Title: The Effect of Adjusted Concentration of Hydrogen Peroxide on the change in reaction rate of liver catalase.…

    • 1242 Words
    • 6 Pages
    Good Essays
  • Better Essays

    Amylase is the type of enzyme that is used to convert starch into glucose so that it can be absorbed. Once the glucose has diffused into the blood stream it is carried to cells to be broken…

    • 1348 Words
    • 4 Pages
    Better Essays
  • Good Essays

    macrounits project

    • 866 Words
    • 4 Pages

    Carbohydrates are made up of carbon, hydrogen, and oxygen. Carbohydrates are come from plants and provide our bodies with good energy. Carbohydrates are the preferred energy source by the brain. The digestive process begins at the mouth. Chewing stimulates secretion of saliva from slavery glands. The food is mechanically broken down. An enzyme named salivary amylase breaks starch into chunks of glucose called dextrins and maltose(disaccharide maltose). Once the food reaches the stomach, the acid in the stomach inactivates all salivary amylase. Carbohydrate digestion is not conducted the stomach for this reason. Before the food approaches the small intestine, the pancreas secretes pancreatic amylase. The pancreatic amylase digests starch into maltose. The enzymes maltase, sucrose, and lactase mucosal cells located at the lining of the intestinal track, break disaccharides into monosaccharides. Maltose is broken down into glucose by the enzyme maltase. The enzyme sucrase breaks down sucrose into glucose and fructose. Lactose is broken into glucose and galactose by lactase. Monosaccarides are absorbed into the intestine lining. They enter the bloodstream on their way to the liver. Along the way to the liver, some monosaccarides are picked up by cells and used for energy. Monosaccarides travel to the liver via portal vein. Monosacharides (like Fructose and galactose) are converted to glucose by the liver. After, they are ready to travel to the cells to provide us with energy. Some glucose will stay behind with the liver and become glycogen. Also a small some of glycogen are stored by glial cells…

    • 866 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Enzyme

    • 585 Words
    • 3 Pages

    For Activity A, we first tested enzyme activity. First, we used an H2O2 syringe to transfer 10 mL of H2O2 into an unlabeled 60-mL cup. Then, we used a transfer pipet to add one mL of catalase solution into the unlabeled 60-mL cup that we put H2O2 in. After that, we observed the solution for one minute. Then we tested the effect of boiling on enzyme activity. First we used a transfer pipet to transfer 4 mL of catalase into a test tube. After that, we placed the test tube filled with catalase in a boiling water bath for five minutes. While we were waiting, we rinsed the unlabeled cup we used earlier when we tested enzyme activity. Then we used a H2O2 syringe to transfer 10 mL of H2O2 into the rinsed unlabeled cup. After five minutes, we transferred 1 mL of the boiling catalase into the unlabeled cup with H2O2 in it with an unused transfer pipet and observed the results. After testing the effect of boiling on enzyme activity, we tested for catalase in living tissue. First, we rinsed the unlabeled 60 mL cup we used earlier. Then, we used a scalpel to cut a small piece of liver. After that, we macerated the piece of liver with a glass rod. When the liver was macerated enough, we put it in a cup with 10 mL of H2O2, which was transferred into the cup with a H2O2 syringe. Lastly, we observed the cup.…

    • 585 Words
    • 3 Pages
    Good Essays
  • Better Essays

    enzyme

    • 2347 Words
    • 10 Pages

    The first screen that appears in Enzyme Lab shows you a biochemistry lab containing all the reagents and equipment you will need to perform your experiments.…

    • 2347 Words
    • 10 Pages
    Better Essays
  • Powerful Essays

    Enzyme Lab

    • 1094 Words
    • 5 Pages

    Our results showed that the reaction rate and concentration of substrate are proportional. Why this happens is interesting. A reaction is the change of the substrate into a new and different thing, called the product. The collision theory states that reactions happen as molecules collide, but they must collide at the correct orientation so that the activation sites on the molecules will match up. If you can increase the number of molecules in a reaction, you will also increase the chances of having the molecules collide. When we increased the concentration of substrate we increased the number of molecules, and thereby increasing the chances of the molecules colliding. So increasing the concentration of the substrate increased the rate of the…

    • 1094 Words
    • 5 Pages
    Powerful Essays
  • Better Essays

    enzyme report

    • 684 Words
    • 3 Pages

    In this lab we used a solution of lactase to test the chemical and physiological properties of this particular enzyme and determined whether the lactase came from human cells or bacterial cells. In the statistical analysis statistical formulas and techniques are used to analyze the significance of a set of data and the validity of the conclusions made based on that data. These are some terms and definitions that will be crucial to understanding the validity of this experiment. An enzyme is a protein that acts as a catalyst to lower the activation energy required for reactions to progress in the cells. Null hypothesis states that there will be no difference between the result of two separate variables A and B. The null hypothesis states in regards to the enzyme experiment that lactase will not bind preferentially, or more specifically, to maltose or lactose. Before a null hypothesis can be rejected we must notice a large difference between glucose produced from maltose versus lactose. Alternate Hypothesis states the opposite of null in that there will be differences between the results of A and B. Probability is an indication of likelihood very similar to a percent chance. All probabilities are between 0 and 1, with probability zero indicating an event is impossible and one indicating an event is certain to occur. T-value or t-Test is what is used to determine whether or not the null hypothesis is valid. This t-value can be used to create a p value which in turn will determine whether the results are statistically significant or not. Based on what I know about the effect of temperature on the enzymatic activity of lactase, I hypothesize that higher temperatures will cause denaturing in the enzyme causing it to be less effective and lower temperatures will more conducive to enzymatic activity, and a higher pH will be more conducive to enzymatic activity.…

    • 684 Words
    • 3 Pages
    Better Essays
  • Better Essays

    amylase lab report

    • 1766 Words
    • 8 Pages

    There are many types of enzymes and each has a specific job. Enzymes are particular types of proteins that help to speed up some reactions, such as reactants going to products. One of them is the amylase enzyme. Amylases are found in saliva, and pancreatic secretions of the small intestine. The function of amylase is to break down big molecules of starch into small molecules like glucose; this process is called hydrolysis. Enzymes are very specific; for example, amylase is the only enzyme that will break down starch. It is similar to the theory of the lock and the key. The enzyme is the lock and the key is the substrate; only the correct key could fit into the keyhole of the lock.…

    • 1766 Words
    • 8 Pages
    Better Essays
  • Better Essays

    Amylase is an enzyme in human saliva and in other organisms and its substrate is starch. When the active site of amylase binds with the starch, hydrolysis takes place. When the hydrolysis (the breaking of a chemical bond with the insertion of the ions of a water molecule) of starch is complete you are left with a disaccharide called maltose.…

    • 1062 Words
    • 4 Pages
    Better Essays
  • Better Essays

    To test the effect of a substrate concentration on enzyme activity, the amylase enzymes were combined with a different substrate concentration (starch) and the rate of the reaction was determined with the aid of I2kI. If starch was detected, the solution turned to dark blue; if the starch was already broken down, then reaction stayed colorless. To test the optimal PH, the starch and a buffer were combined at a specific PH level and the rate of reaction was tested. To determine the optimal temperature of amylase enzyme, the solution and amylases enzyme were held at various temperatures and the rate of reaction was determined.…

    • 2678 Words
    • 11 Pages
    Better Essays
  • Better Essays

    Enzyme Formal Lab

    • 2542 Words
    • 11 Pages

    The purpose of this investigation is to figure out how temperature, pH, and enzyme concentration affect the reaction rate of an enzyme. It’s important to understand how certain factors affect enzymes because of their crucial role in the metabolic processes of life. Enzymes lower the activation energy necessary for a chemical reaction to occur, allowing vital processes such as digestion, ATP production, and DNA replication to occur efficiently. Using a Vernier Gas Pressure Sensor the rate of reaction of the enzyme catalase as it decomposed Hydrogen Peroxide in a test tube was measured and then results were put on the screen of a Macintosh computer using Logger Pro software and Vernier computer software. Several trials were then done with one factor, either temperature, pH, or enzyme concentration being altered, while the remaining two stayed constant. The rate of reaction of catalase should increase with enzyme concentration until a certain point until it reaches its limit. For temperature the rate of reaction of catalase should increase until the enzyme catalase denatures, and then after the rate should start to decrease. When exposed to different pH levels the rate of reaction of catalase should increase as the enzyme catalase reaches its optimal pH level, once it’s at that point the rate of reaction should then decrease as the pH level goes farther away from catalase’s optimal pH level. The data for the trials of pH and enzyme concentration support the expected hypotheses of how the reaction rate would be affected, however the data did not support the hypothesis made for the effects of temperature on an enzyme’s reaction rate due to divergent data from the expected results. (need this line or is conclusion and results of data and trends summarized with data supported hypotheses) ask if titel too long,,…

    • 2542 Words
    • 11 Pages
    Better Essays
  • Better Essays

    Application of Enzymes

    • 966 Words
    • 4 Pages

    The use of starch degrading enzymes was the first large scale application of microbial enzymes in food industry. Mainly two enzymes carry out conversion of starch to glucose: alpha-amylase and fungal enzymes. Fructose produced from sucrose as a starting material. Sucrose is split by invertase into glucose and fructose, fructose separated and crystallized.…

    • 966 Words
    • 4 Pages
    Better Essays