Preview

Enzyme Lab Report Introduction

Good Essays
Open Document
Open Document
256 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Enzyme Lab Report Introduction
Enzymes are proteins that increase or decrease the rate of chemical reactions. They are generally globular proteins and are around 62 amino acids residues in size. What enzymes do is determined by their 2-dimensional shape. A lot of enzymes are bigger than the substrate they act on, but only a little part of the enzyme involved directly with the catalysis. Without enzymes the chemical reactions in the body, would be so slow, the body would shut down. And cell reactions would take too much energy that our body won’t be able to provide. Like a wrench that stays the same after unscrewing a lot of bolts, so does an enzyme keep working after it finishes a chemical reaction. This reaction helps increase the efficiency of enzymes, because they can be used over and over again. Enzymes are really specific, each enzyme only works with particular kinds of molecules, called substrates. Enzymes can also speed up the same chemical reaction going backwards. Enzymes may break a molecule into two pieces, but will put it back together only if it’s provided with the two pieces. There are basically two theories to suggest how enzymes and substrates fit together. These are the lock and key mechanism and the induced fit mechanism. The lock and key mechanism says that the structure of the substrate fits exactly to the structure of the active site. The induced fit mechanism says that the active site of the enzyme can change itself a little to help the substrate fit

You May Also Find These Documents Helpful

  • Good Essays

    Enzymes are protein molecules that increase the speed of chemical reactions in the body. They work by combining with and altering the molecules of other chemical substances. There are thousands of different types of enzyme with varied structures that determine their particular activity. The digestive enzymes secreted in the digestive tract split large molecules of food into small units for absorption.…

    • 420 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Enzymes are protein, they are used to catalyse metabolisms in all organisms. They break down complex molecules and build up complex molecules from simple molecules, these two processes are catabolic reaction and anabolic reaction respectively. Enzymes are needed in these two processes to catalyse releasing and taking up ATP molecules.…

    • 625 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Enzymes: Lab Report

    • 2612 Words
    • 11 Pages

    Enzymes work by combining with reacting molecules at the active site. Each enzyme is specific to only one kind of molecule and can only bind to its specific molecule. The active site is a groove in the enzyme where the molecule will bind to; this is formed by the enzyme folding into a specific shape. When the enzyme is done and the molecules are then in the transitional state, which means the bonds are unstable and ready to be broken, the enzyme remains unchanged and can continue to bind to other molecules (Russel et al., 2010).…

    • 2612 Words
    • 11 Pages
    Better Essays
  • Better Essays

    Biology 1 Lab Report

    • 2764 Words
    • 12 Pages

    then release the products. The principal function of enzymes is to increase the rate of the…

    • 2764 Words
    • 12 Pages
    Better Essays
  • Good Essays

    Lab Report

    • 1017 Words
    • 5 Pages

    Enzymes are biological molecules that catalyze chemical reactions. In enzymatic reactions, the molecules at the beginning of the process, called substrates, are converted into different molecules, called products. Almost all chemical reactions in a biological cell need enzymes in order to occur at rates sufficient for life. Like all catalysts, enzymes work by lowering the activation energy for a reaction, thus dramatically increasing the rate of the reaction. As a result, products are formed faster and reactions reach their equilibrium state more rapidly. Most enzyme reaction rates are millions of times faster than those of comparable un-catalyzed reactions. As with all catalysts, enzymes are not consumed by the reactions they catalyze, nor do they alter the equilibrium of these reactions. However, enzymes do differ from most other catalysts in that they are highly specific for their substrates. Enzymes are known to catalyze about 4,000 biochemical reactions.…

    • 1017 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Metabolism

    • 710 Words
    • 3 Pages

    Enzymes act as a catalyst by speeding up or slowing down processes in the body.…

    • 710 Words
    • 3 Pages
    Good 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

    work together in specific orders and create metabolic pathways; this is how enzymes take on the product of other enzymes as substrates. In doing so, catalytic reactions occur and the products formed are then passed onto another enzyme. Enzymes work by lowering the activation energy for reactions; this speeds up the rate of the reaction process as illustrated in figure 3 below (Grisham, 2012).…

    • 1453 Words
    • 6 Pages
    Better Essays
  • Good Essays

    Enzymes are globular proteins which catalyse and regulate chemical reactions in all living organisms. Since they are not used up in reactions (but warn down), enzymes can be used over and over again. Enzymes posses an active site; which only recognizes a particular substrate. The shape of this site allows for a particular enzyme to bond with its substrate to form a temporary enzyme-substrate complex. The specificity is referred to as “the lock and key theory”, but in practice works more like a “hand and glove fit”. Once the reaction has occurred, the product(s) break free of the enzyme, leaving it free to catalyse more reactions.…

    • 1178 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Importance of Enzymes

    • 605 Words
    • 3 Pages

    Enzymes are large proteins that are responsible for catalysing thousands of metabolic processes that sustain life. Enzymes work similarly to those catalysts used in industry by lowering activation energy and therefore dramatically speeding up the rate of a reaction, however, these biological catalysts are highly selective to their substrate. Almost every chemical reaction that occurs in a cell requires enzymes in order to occur at rates required for the sustenance of life.…

    • 605 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Treating Starch

    • 4680 Words
    • 19 Pages

    You can also think of the way enzymes work as a key and a lock, the key is the substrate and the lock is the enzyme. The key should be exactly the right shape to fit in the lock, so does the…

    • 4680 Words
    • 19 Pages
    Good Essays
  • Powerful Essays

    pepsin

    • 1884 Words
    • 8 Pages

    Enzymes contain specific binding sites, called active sites, where chemical reactions are catalysed and the rest of the protein acts as scaffolding, supporting the active site and allowing it to maintain its proper shape. In a chemical reaction, the reactants, or substrates, binds to the active site of the enzyme, where amino acids are attached to the substrate molecule and held in position while the reaction takes place. This forms…

    • 1884 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    Energy Concept

    • 604 Words
    • 3 Pages

    What are enzymes and how do they work? A protein that serves as a biological catalyst, changing the rate of a chemical reaction without itself being changed in the process.…

    • 604 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Enzymes control the rate of metabolic reactions, they act as biological catalysts, which means they are used but not used up and they also control the speed of the reaction. Enzymes are proteins which means that anything that disrupts this structure such as high temperature or change in pH will affect the enzyme activity.…

    • 414 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Ib Biology Enzymes Ia

    • 1408 Words
    • 6 Pages

    Enzymes are globular proteins, they are responsible for most of the chemical activities of a living organism. They act as catalysts, substances that affects the reaction of other substances without being destroyed or altered during the process. They are extremely efficient in the body system of living organisms, one enzyme may catalyse over a thousand chemical reactions every second. But there are certain conditions that need to be fulfilled in order for the enzymes to work. Temperature of the environment must be correct for each enzyme because different enzymes will have different temperature ranges in which they can live. pH levels in the environment must also be correct because if the environment around the enzyme is too basic or acidic, the enzyme will quickly denature.…

    • 1408 Words
    • 6 Pages
    Good Essays