The different possible substrates for avocado catechol oxidase have very different Km’s and Vmax’s (Table 1). The Km’s range from 0.7 to 95, and the Vmax’s range from 0.58 x 105 to 17 x 105. The enzyme’s own substrates catechol has a Km of 6.5 and a Vmax of 5.4 x 105. Some of the substrates are better suited for catechol oxidase than others.
Prove if the material in cup 6 is a metal, metalloid, or nonmetal, by using its appearance, color, state of matter, luster, conductivity, malleability, and how it reacts with HCL. Before beginning to test on the substance we observed its appearance, state of matter, luster, and color. The substance was very shiny, solid and hard, as well as silver. Then we put on safety goggles to start testing.
Dehydration of 2-Methylcyclohexanol Sura Abedali Wednesday 2:00 PM January 31, 2018 Introduction: Dehydration reactions are important processes to convert alcohols into alkenes. It is a type of elimination reaction that removes an “-OH” group from one carbon molecule and a hydrogen from a neighboring carbon, thus releasing them as a water molecule (H2O) and forming a pi bond between the two carbons1. In this experiment, 2-methylcyclohexanol undergoes dehydration to form three possible products: methylenecylcohexane, 1-methylcyclohexene, and 3-methylcyclohexene in a Hickman still apparatus. Adding 85% Phosphoric Acid to protonates the “-OH” group, turning it into a better leaving group and initiating the dehydration reaction.
Radioactively Labeled Azole Import by M. oryzae Radioactively labeled FLC (3H-FLC), (481 GBa/mmol, 13 Ci/mmol, 1 µCi/µL; 77 µM FLC) was custom synthesized by Amersham Biosciences. The drug concentration used during the import assay was well below the Minimum Inhibitory Concentration (MIC) for the strain (M. oryzae FLC MIC >32 µg/ml). To directly measure azole intracellular accumulation in the fungal cell, we used 3H-FLC in our drug uptake assay designed for M. oryzae.
ST Report In the experiment, the problem was the contaminants that were affecting the quality of the water samples. To fix this issue, three scientists had to determine the contaminants that were present in the samples. One sample was from the school sink and the second sample was from an unknown source. The scientists conducted many tests to figure out what pollutants were present in the water.
Oxis Turbohaler 1.0 Generic Drug Name; Preparation/Formulation Oxis (Formoterol); Oxis Turbuhaler; Oxis (Eformoterol fumarate dihydrate for inhalation) 1.1 Oxis Turbohaler 6, inhalation powder • Each delivered dose of Oxis Turbohaler 6 (i.e. the dose leaving the mouthpiece) contains 4.5 micrograms formoterol fumarate dihydrate which is derived from a metered dose of 6 micrograms. • Diluents: Lactose Monohydrate 895 micrograms per delivered dose, corresponding to 1005 micrograms per metered dose. 1.2 Oxis Turbohaler 12, inhalation powder • Each delivered dose of Oxis Turbohaler 12 (i.e. the dose leaving the mouthpiece) contains 9 micrograms formoterol fumarate dihydrate which is derived from a metered dose of 12 micrograms. • Diluents: Lactose
The limitations of the experiment are the accuracy of the measurements and the precision of the concentration of gelatin and gum arabic. If this experiment were replicated, an improvement could be measuring the amount of gelatin and gum arabic precisely. Also more than 1 slide could be made with the same concentration, to ensure accurate
1. Introduction Epoxides (or oxiranes) are highly versatile intermediates in synthetic organic chemistry. Nature also uses them as intermediates in many key biosynthetic pathways. However, there are other functions of epoxides in biological systems. They can impart localised structural rigidity, confer cytotoxicity by alkylation, or be secondary metabolites [1].
Describe the general structure and shape of an enzyme. In particular, the role of the amino acid R groups in stabilising the shape should be covered. (P4) Enzymes are important catalysts for biochemical reactions. Enzymes can speed up the biochemical reactions by providing another reaction pathway of lower activation energy.
In this experiment I will be testing the effect that different solutions (oil, soap, alcohol, salt and sugar will have on the membrane of cherries. In plant cells one type of membrane bound vacuole is the tonoplast ( it is quiet large and contains water). However in cherries this vacuole also contains a water soluble red pigment called anthocyanin . The anthocyanin gives the cherry it’s red colour. When the membrane of a cherry is damaged the colour will fill the surrounding environment.
Starch solution is then placed into the test tube at a quantity of 5 mL. 5 drops of Lugol’s Iodine solution is added to the test tube. If the color changes, then it is known that starches are present in the solution. Proteins are next tested. In order to do this, 5 mL of gelatin solution is added to the test tube. 10 drops of Biuret’s reagent are added to test for protein.
This is due to the side chains of dissociable and polar groups attached to the amino acids in the gelatin (2). Heat can also plays a factor in how quickly these side chains can be separated from the structure and dissolved. Certain functional groups that resided on the amino acid chains of the gelatin
Gellan gum is an anionic deacetylated exocellular polysaccharide secreted by Pseudomonas elodea with a tetrasaccharide repeating unit of one á-L-rhamnose, one â-D-glucuronic acid and two â-D-glucuronic acid residues 30. It has the propensity of gelation which is temperature reliant or cations induced .This gelation involves the formation of double helical junction zones followed by aggregation of the double helical segments to form a three-dimensional network by complexation with cations and hydrogen bonding with water 31. The formulation consisted of gellan solution with calcium chloride and sodium citrate complex. When administer orally, the calcium ions are released in acidic environment of stomach leading to gelation of gellan thus forming a gel in situ 32. In situ gelling gellan formulation as vehicle for oral delivery of theophylline is reported.
There Is a Reason Why Patients Are Given Gelatin in the Hospital Gelatin Gelantin consists of glycine and proline. Nowadays, people do not consume these amino acids as they are found in organs, bones and fibrous tissues. These parts are rarely found on our dinner plates.
Hypothesis: If we add pineapple and meat tenderizer to the gelatin, then it will not congeal. Materials needed: Gelatin, Fresh and canned pineapple, Meat tenderizer, Beakers, Cold and boiling water, a timer, 4-5 bowls, 4-5 test tubes and a rack, and a few spoons. STEPS Step 1.
