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  • Gastric Phase Of Digestion
    1,985 words
    How Nutrients Get in, and Wastes Out. By Faisal PremjiScience 10 Assignment -- Part BIn a human being, nutrients are necessary for survival. But how are these nutrients obtained? This report will go into depth on how the food we eat gets into our cells, and how the waste products that we produce get out of the body. Also, the unicellular organism Paramecium will be compared with a human being, in terms of all of the above factors. Dietary Nutrients The chief nutrients in a diet are classified ch...
  • Velocity Of The G 6 P Assays
    2,042 words
    Glucose-6-Phosphate Appears to be a Competitive Inhibitor of the Bovine Intestine Enzyme Alkaline Phosphatase Abstract This study focuses on the effects of glucose-6-phosphate (G 6 P) on the kinetics of the enzyme alkaline phosphatase. Because G 6 P is a common molecule and has a phospho ester bond, it may prevent alkaline phosphatase from hydrolyzing certain substrates. The data collected in this study seem to indicate that G 6 P is a competitive inhibitor of the enzyme and causes an increased ...
  • Active Sites And The Rate Of Reaction
    1,080 words
    Enzymes The majority of the reactions that occur in living organisms are enzyme-controlled. Without them, the rate of the reactions would be so slow as to cause serious, if not fatal, damage. Without enzymes toxins would soon build up and the supply of respiratory substrate would decrease. Enzymes are proteins and thus have a specific shape. They are therefore specific in the reactions that they catalyse one enzyme will react with molecules of one substrate. The site of the reaction occurs in an...
  • Increased Use Of Food Enzymes
    825 words
    Enzymes Essay Introduction Enzymes are the sparks that start the essential chemical reactions our bodies need to live. They are necessary for digesting food, for stimulating the brain, for providing cellular energy, and for repairing all tissues, organs, and cells. There are three types of enzymes: metabolic enzymes, digestive enzymes, and food enzymes. Metabolic enzymes catalyse, or spark, the reactions within the cells. The body's organs, tissues and cells are run by metabolic enzymes. Without...
  • Half Enzyme Concentration
    1,434 words
    Introduction "Enzymes are biological catalysts that carry out the thousands of chemical reactions that occur in living cells" (Eberhard, 1985). Enzymes are groups of proteins that are made of long chains of amino acids. They serve as catalysts by lowering the activation energy for chemical reactions. Cofactors and coenzymes are introduced when the enzyme needs help to catalyze the reaction. They are nonprotein helpers that bind to the active site; coenzymes are organic cofactors such as vitamins...
  • Bond To The Active Site Of Enzymes
    1,008 words
    The structure of the enzyme is mainly dependent on the active site and variable groups. Extreme temperatures or extreme pHs can alter the structure of an enzyme. Enzymes function to lower the activation energy to break the bonds. They achieve this by putting stress and pressure on the bonds or creating a micro environment for the substrate. Enzymes are regulated by inhibitors or activators and can be inhibited by the products of the reaction, called feedback inhibition. Enzymes are catalytic pro...
  • Restriction Enzymes And Lambda Dna
    1,328 words
    I. Purpose perform electrophoresis using restriction enzymes and lambda DNA understand how a restriction enzyme works analyze a photograph of electrophoresis understand how gel electrophoresis separates DNA molecules in a mixture how to use electrophoresis to separate DNA fragments determine unknown DNA fragment sizes when given DNA fragments of known size II. Materials agarose powder casting tray and comb camera crushed ice container distilled water DNA samples electronic scale with tare electr...
  • Substrate For The Enzyme
    399 words
    Enzymes are proteins, composed of polypeptide chains and non-protein groups. Their function is to help with the reactions of many cells and molecules by serving as catalysts. A catalyst is a substance that allows the activation energy required for a reaction by forming a temporary association with the molecules that are reacting. During this process, the catalyst itself is not permanently altered in the process, and so it can be used over and over again. Because of catalysts, cells are able to c...
  • Enzyme Glucose Isomerase
    926 words
    The food and drink industry depends heavily on enzymes. Enzymes produced by yeast have been used for thousands of years in brewing and baking. High fructose syrup contains fructose and glucose in roughly equal proportions. The high fructose syrup is greater in demand than pure glucose as food and drink sweeteners, because fructose is sweeter than glucose. Therefore, if glucose can be converted into fructose, its commercial value is increased greatly. Biological systems are increasingly being use...
  • Small Intestines From The Stomach
    574 words
    The digestive system consists of many different organs that digest food to create energy for the human body. The first stage of digestion begins with the mouth. Food is first taken in through the mouth. The mouth contains different type of teeth, which help break up the food. We have teeth that cut ant rip food such as carnivores and teeth that are flat, which grind food like herbivores. Within the mouth, the tongue helps mix the food with saliva. Three pairs of salivary glands secrete saliva in...
  • Raw Foods Diet
    417 words
    What's up with the Raw Deal? The Atkins diet? South-Beach Diet? Jenny Craig? Weight Watchers? But a Raw-food only diet? What the... ?! Consuming only raw foods? Not cooking anything? Isn't that unhealthy? Not according to advocates of this diet. The raw foods diet is among some of the latest fad and celebrity-hyped diets out there today, you can even find some restaurants that only serve raw foods. The name of the raw food diet says it all: You only consume raw, unprocessed foods. Diet devotees ...
  • 11 2 Cm 3
    1,466 words
    An experiment to determine the amount of urea in a specimen of urine. Introduction. Metabolism produces a number of toxic by-products, particularly the nitrogenous wastes that result from the breakdown of proteins and nucleic acids. Amino (NH 2) groups are the result of such metabolic reactions and can be toxic if ammonia (NH 3) is formed from them. Ammonia tends to raise the pH of bodily fluids and interfere with membrane transport functions. To avoid this the amino groups are converted into ur...
  • Bubble Column In The Enzyme Tube
    1,703 words
    Situations That Govern the Pace of an Enzymatic Reaction: Enzyme Concentration, Temperature, and pH Joe Saunders BSC 1010 C; T, R: 11: 50-12: 05 Lab: T: 12: 15-3: 05 INTRODUCTION: An enzyme is any one of many specialized organic substances, composed of polymers of amino acids that act as catalysts to regulate the speed of the many chemical reactions involved in the metabolism of living organisms. The word enzyme comes from the Greek phrase en yeast. Many scientists who studied enzymes in the 180...
  • Secretion Of The Strongly Acid Gastric Juice
    562 words
    Few animals are equipped with enzymes capable of attacking cellulose, although this polysaccharide plays a very large part in the nutrition of herbivorous animals. In these creatures the task of digesting cellulose is usually delegated to vast hordes of symbiotic microorganisms, and the useful products of their activity consist in the main of short-chain fatty acids. The mechanisms of this degradation are complex, if only because many different kinds of microorganisms are involved. At the presen...
  • Initial Rate Of Reaction Against Enzyme Concentration
    333 words
    The results of an investigation in which different amounts of catalase were added to the same amount of hydrogen peroxide. You can see that the shape of all five curves is similar. In each case, the reaction begins very quickly (steep curve) and then gradually slows down (curve levels off). Because the amounts of hydrogen peroxide are the same in all five reactions, the total amount of oxygen eventually produced will be the same so, if the investigation goes on long enough, all the curves will m...
  • Enzyme Activity
    300 words
    Enzyme are biological catalyst to speed up a specific chemical reaction by providing an alternative pathway with the lower activation energy. Enzyme are protein in nature, it has its own 3-dimension configuration. It works due to presence of active site, a specific region with specific configuration, are able to bind with substrate to form enzyme-substrate complex for reaction. The specific 3-dimension configuration is held by bonds within enzyme. However, heat affect the enzyme activity. Heat p...
  • Reaction Rate Between The Catalase And Hydrogen
    1,630 words
    Enzyme Investigation Enzymes such as Catalase are protein molecules, which are found in living cells. They are used to speed up specific reactions within the cell. They are all very specific as each enzyme just performs one particular reaction. Catalase is an enzyme found in food such as potato and liver. It is used to remove Hydrogen Peroxide from cells. Catalase speeds up the decomposition of Hydrogen Peroxide into water and oxygen because the shape of its active site matches the shape of the ...
  • Concentration Of The Substrate In An Enzyme
    913 words
    The Effect of Concentration of Substrate Starch on the Rate of Reaction of the Enzyme Amylase Brief An enzyme is A compound that catalyzes biochemical reactions. Enzymes are proteins, which act with a given compound (the substrate) to produce a complex, which then forms the products of the reaction. The enzyme itself is unchanged in the reaction; its presence allows the reaction to take place. The names of most enzymes end in -ase, added to the substrate (e.g. lactase) or the reaction (e.g. hydr...
  • Enzyme Solution Concentrations
    1,147 words
    Introduction In this experiment, we intended to investigate the effect of the concentration of catechol oxidase on the reaction rate of catechol to ortho-quinone. Living things, to increase the speed of chemical reactions, use enzymes. Enzymes are a type of protein. Because of the fact that enzymes are proteins, they have certain shapes. These shapes create areas in which the substrate, the chemical that is broken down by the enzyme, can fit in and be broken down. The way that this reaction take...
  • Chances Of A Single Enzyme
    1,756 words
    Every second, more processes than can be counted are carried out in the bodies of all living things. So complex and detailed are these processes that at every stage, the intervention of "super-regulators" is essential to control the whole system that maintain order and accelerate events. These super-regulating chemicals in the human body are enzymes. Every living cell contains thousands of enzymes, each of which performs its own tasks, such as assisting with the copying of DNA, breaking down foo...

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