Page 1 of 25 - About 242 essays
  • The Effect of Substrates and Temperature on Lactose and its Shape, A list

    460 Words  | 2 Pages

    enzyme to a specific substrate and how it can denature due to the rise in temperature. Background Information: Lactase is an enzyme that breaks down lactose. Lactose is the sugar found in milk. It is made up of two monosaccharides: glucose and galactose. Therefore it is a disaccharide that needs to break down in order to be digested. However some people are “Lactose Intolerant” or lack lactase in their bodies. This means that they cannot consume lactose-contained food or drinks or they need help

  • Aerobic Respiration And Aerobic Respiration

    861 Words  | 4 Pages

    to measure the amount of CO2 produced as the yeast metabolizes. The approached used was to test the level of CO2 (mL) production, after different solutions with 1.5 mL of Saccharomyces cerevisiae and 4.5 mL and either 1M of glucose, fructose, or galactose go through cellular respiration. The higher level of CO2 produced indicates the more cellular respiration that took place. A

  • Spectrophotometry : Results And Relevance

    2018 Words  | 9 Pages

    Spectrophotometry: Results and Relevance in the World Gretchen Riker General Biology Lab, Section 40057 (PM) Tuesday, June 2nd, 2015 Introduction: “Spectrophotometry is a method to measure how much a chemical substance absorbs light by measuring the intensity of light as a beam of light passes through sample solution” ( ChemWiki). Many chemists and biologists use the principles of spectrophotometry in everyday experiments to provide results and insight into what they are presently studying

  • Imobilizing Enzymes

    879 Words  | 4 Pages

    could retain it even after it has been involved in the reaction by catalysing the breakdown of lactose in glucose and galactose. Lactose was contained within the milk and as the milk met the immobilised lactase, it began to break down into glucose and galactose. The results show, as the lactose in the milk was left to the lactase for longer, the break down into glucose and galactose increased. This can be seen by the colour change. To begin with we tested the milk for glucose by dipping the clinistix

  • Essay about Cell Bio Lab Report

    704 Words  | 3 Pages

    agglutination of the first couple wells, then no agglutination as the ConA concentration decreased, similar to Row A. Wells B and E that had the Galacatose additive obtained the same titer of the control ConA because ConA does not bind Galactose. Galactose doesn’t interfere with ConA from binding to the sugar residues on the red blood cells. Mannose on the other hand, is an inhibitor to ConA’s binding sites. The Mannose in solution competed with the ConA and did not allow to bind to the sugar

  • Classic Galactosemia Type 1

    1425 Words  | 6 Pages

    disorder and the exact pathophysiology has is controversial. However, it is most commonly accepted that the main factor is the accumulation of galactose-1-phosphate, gal-1P, which is due to the impairment of galactose-1-phosphate uridylytransferase, GALT. This reaction uses the GALT enzyme as a part of the Leloir pathway which enables the body to process galactose. The GLAT enzyme itself belongs to the histidine triad super family and is a member of branch III. This enzyme shows specific nucleoside monophosphate

  • What Is A Transposon?

    1304 Words  | 6 Pages

    Transposition Mutagenesis: Post-lab Questions Rebecca Herbert Friday Lab Section 1a. What is a transposon? A transposon is a section of DNA whose location can be moved, or transposed, from a plasmid to a chromosome, or vice versa. Transposons are necessary if recipient DNA are missing a sequence that complements the donor DNA. Also referred to as “jumping genes,” transposons are unlike typical DNA which usually does not move around, and are flanked by inverted repeat sequences which contribute to

  • Tube 4 Lab Report

    595 Words  | 3 Pages

    contrast to the other tubes 1 mL initial volume; this exposure may have affected the outcome for this sample. The third experiment was both correct and incorrect as the monosaccharides, fructose and galactose, demonstrated wildly different CO2 production. Sucrose produced about 11mL of CO2 while galactose produced only 0.5mL. The disaccharides of sucrose, maltose, and lactose demonstrated a similar trend where sucrose produced significant amounts of CO2 whole maltose and lactose lagged behind in production

  • Beta Galactosidase Essay

    1129 Words  | 5 Pages

    It catalyzes a reaction in the bacteria’s like Escherichia coli, where lactose is broken down into glucose and galactose. But, it is difficult to measure the breakdown of lactose so another substrate named as ONPG was used, which breaks itself in to ONP and galactose. It is an enzyme which helps in the process of Lac operon. There are three genes which control the synthesis of beta-galactosidase, galactoside permease, and thiogalactoside

  • Sialyation In Cancer

    600 Words  | 3 Pages

    interacting with specific glycans. These galectins bind galactose of cell surface glycans to initiate the killing mechanism. It has been reported that α-2,6 sialyation significantly blocks galectin binding and inhibit apoptosis and this leads to the undesirable growth of cancer cells44-45. The α-2,6 sialyation also significantly blocks apoptosis pathways which use FAS46 and TNFR147 cell receptors. Even though the α-2,6 sialylation of cell-surface galactose is shown to have a huge impact on apoptosis48, the