Hydrogen peroxide

variety of biological processes to take place. Specifically, they promote the oxidation of various compounds using naturally occurring peroxides, especially…

The crude extract containing a catalase, catalyse a reaction where the substance is simultaneously oxidized and reduced, giving two different products of H2O to O2 and H2O. This reaction was measured by UV-Vis spectroscopy which results a decrease in absorbance at 240nm. The decrease in absorbance was caused by the loss of H202 in a product. The catalase enzyme was purified by the 5 – step procedure using a sodium phosphate buffer and a DEAE- Sepharose column which is mainly used for protein…

any color change within 15 seconds and interpret the results. The catalase test was performed using the slant that was the source of the inoculum used for the oxidase test. A drop of 3% hydrogen peroxide was added to the said slant and the tube was observed for any…

Melissa Cavello came in for an appointment concerning a severe break out of acne covering her face and shoulders. Background information for her includes fourteen years old, no allergies, no previous diagnosis, vital signs were normal were within normal range, weight being 135lbs, and acne has become progressively worse over the past three months. Her history includes that she has visited multiple other doctors that have only ruled out any hormonally issues that may result in acne. The doctor…

The purpose of this study was to investigate the effect of a system that automatically adjusting hydrogen peroxıde Colloıdal-Ag dose to reduce colonization and growth of heterotrophic bacteria in dental unit waterlines and wastewaters. Thirty dental units were assigned into three groups with respect to the protocol employed: Group 1: 10 units were selected for automatic administration. Group 2: 10 units were selected for manual administration and Group 3: 10 units served as controls. Water…

Table of Contents: Introduction………………………………………………………………………………………………………………………..2 Aim……………………………………………………………………………………………………………………………………….2 Background Info……………………………………………………………………………………………………………………2 Hypothesis…………………………………………………………………………………………………………………………….2 Variables……………………………………………………………………………………………………………………………….2/3 • Independent…………………………………………………………………………………………………………………………..2 • Dependent……………………………………………………………………………………………………………………………..3 •…

The hypotheses given were greatly supported during the experiment. Three of the four drugs; Lignocain, Hexamethonium, and Atropine, all showed a decline of inhibition of peristalsis. Nicardipine showed to have complete inhibition of peristalsis. It showed to have a 0 au drug amplitude. There were two standard pressures for this experiment. This was due to the two groups having to compensate for the differences in the two tissues used. Pressures used for Hexamethonium and Nicardipine was 2 cm/H2O…

What is the chemistry of hair highlights? Hydrogen peroxide is an ingredient that is included in most commercial hair dyes, it is a cheap, easy way to brighten your hair or bring out your natural highlights. Keep in mind that with any home bleaching or dyeing process, there is a chance of damaging your hair or getting an unnatural looking result. Highlights have been around forever, although not used in the traditional sense. Different methods have been used for centuries. Hair highlights are…

HALDANE RELATIONSHIP AND ONE-WAY ENZYMES  INTRODUCTION: Most of the enzyme catalyzed biological reactions are reversible in nature. However, an enzyme may prefer to catalyze the reaction more efficiently in one direction over the other under given physiological concentrations of substrate or product (substrate in the reverse direction). An enzyme favouring a virtual unidirectional catalysis of an overall reversible reaction can’t escape the laws of thermodynamics. As a catalyst doesn’t change…

energy requirement of the neuron under stress." This is evidence that this poison is creating problem with the formation of ATP and induce the oxidative stress level up. It also causing the concentration gradient of protein not to be able to carry the hydrogen ion to final enzymes of electron transport chain. Cyanide poison is not the only poison that affect the cell metabolism. Carbon monoxide also affect the cell…