Discovery Of The Concentration Of Phosphate - 1250 Words

The goal of the lab was to discover the concentration of phosphate in various colas in order to help with a project for a major cola company. Before we could accomplish this final goal, a Spec 20 was used to test three colors of food colorings. A Spec 20 is an instrument used to â€Å"measure the intensity of a light beam before and after it passes through a sample and compares these two intensities† (What does a Spectronic 20 measure). The instrument is able to measure the percent transmittance and absorbance of a given sample. It works by taking light of various wavelengths and passing them through a monochromator. A monochromator is a device that transmits a wavelength of light. The machine diffracts the wavelengths. The sample that is placed in a small container, called a cuvette, absorbs various wavelengths. This depends on the particular sampled being tested. The amount of light absorbed is projected by the machine on a screen, in our case, a digital screen (How Does a Spectronic 20 work?). By doing the lab with the food colorings, we were able to properly learn how to use the Spec 20 and also learn the relationship between absorbance and transmittance. Percent transmittance is the amount of light entering the sample in the cuvette divided by the amount of light leaving the sample, multiplied by 100. This percent can then be converted to absorbance, which is a measure of the capacity of a substance to absorb light of a specified wavelength (Absorbance). It is converted byShow MoreRelatedHow Lanthanum Play A Role Within My Everyday Life1148 Words   |  5 Pagesused in many ways such as improving our water supply, technology and health. This paper will define these uses and also elaborate on its history and properties. To begin, the discovery of ceria was made in 1803 by Jons J. Berzelius in 1803 from the mineral cerite. His apprentice, Carl G. Mosander, took this discovery further suggesting that other rare earth metals might exist within ceria. By infusing nitric acid to cerium nitrate, Mosander, tested his belief. Consequently, some of the ceriumRead MoreDetermining The Double Helix797 Words   |  4 PagesDetermining the Double Helix Deoxyribonucleic acid, commonly known as DNA, was first discovered by Johann Mieschere, a Swiss biologist, in 1869. He made the discovery while studying the nuclei of leukocytes, however the greater significance of this molecule and its structure would not be known until 1951. At that time, scientists did not know the function of DNA, let alone the structure. It was believed that the structure of the mysterious molecule would help uncover its true function. The structureRead MoreThe Discovery Of Its Effects On The Body1608 Words   |  7 PagesB nCreatine was first found in 1832 by a French scientist named Michel Eugene Chevreul. This discovery was found by isolating it from the basified water-extract of the skeletal muscle in animals. He named it creatine after he found concentration of it in animal blood and meat. Justus Von Liebug confirmed in the year 1847 that creatine can be found in the flesh of animal. During his research he also found that wild foxes have more creatine in t heir muscles than their domestic counterparts. AroundRead MoreUse of Energy by the Human Body782 Words   |  3 Pagesimportant polysaccharides in the human body. It is the body’s stored energy; with the highest storing sites being the muscles and liver. Glycogen is important to the liver because it is able to provide a backup supply of glucose so that blood glucose concentration is maintained at a sufficient level to supply the brain during times of starvation. Glycogens function in sustaining blood-glucose levels is imperative because glucose is essentially the only fuel source used by the brain. The primary functionRead MoreUsing Information Obtained From The Single And Double Digests1748 Words   |  7 Pagesagarose gel electrophoresis. For this particular experiment, a 1% agarose gel was used as this concentration ultimately results in pores that can separate the DNA by size. The process of gel electrophoresis is made possible by the electric current that is used to mo ve the samples of DNA throughout the gel. For this particular experiment, the gel was run at a current of 100 volts. As a result of the phosphate backbone of DNA, DNA is negatively charged. Because DNA is negatively charged, it moves awayRead MoreInhibition Of Various Targets On Bacteria Cells Essay1084 Words   |  5 Pagesthey are, the less potential there is for resistance to spread across bacterial species. However, there is also the hope for the discovery and development of new broad-spectrum inhibitors that could be used to side-step present antibiotic resistance while research on treatments that slow the acceleration of antibiotic resistance continue. In recent years, the discovery of new broad-spectrum classes of antibiotics has slowed dramatically, partly due to an increase in rediscovery of already known antibacterialRead MoreProduction of Penicillin Through Fermentation1584 Words   |  7 Pagesknown to be penicillium notatum. He then demionstrated that this material had powerful antimicrobial properties and named the product penicillin. Fleming carefully preserved the culture, but the discovery lay essentially dormant for over a decade. World War 2 provided the impetus to resurrect the discovery. The development of penicillin for the medical use is attributed to an Australian nobleman called Howard Walter Florey who worked with a team at Oxford University. They wanted to investigate theRead MoreComparative Evaluation Between Mathematical Models For Drug Release Of Curcumin Loaded Multifunctional Albumin Nanoparticles917 Words   |  4 Pageseffects by suppressing the nuclear factor in ÃŽ ºB activation pathway, was adsorbed onto the surface of albumin nanoparticles1. Drug release studies are carried out in-vitro using dialysis1. Samples are drawn out at specific time points and drug concentration is quantified using HPLC1. Drug release studies are important to determine the kinetics of the drug release. Drug release is based upon a number factors such as the structure of drug delivery agent such as cylindrical, spherical, composition ofRead MoreEssay about Neurotransmitters1594 Words   |  7 Pagesnervous system (CNS) or periphery. In addition, certain other body chemicals, for example adenosine, histamine, enkephalins, endorphins, and epinephrine, have neurotransmitter-like properties, and many additional true neurotransmitters may await discovery. The first of these families, and the group about which most is known, is the amine neurotransmitters, a group of compounds containing a nitrogen molecule which is not part of a ring structure. Among the amine neurotransmitters are acetylcholineRead MoreDna And Dna Is Responsible For Containing Genetic Information On Living Organisms And Viruses1844 Words   |  8 Pagesin 1919, Phoebus Levene researched this substance, and discovered that nucleins were more accurately described by the term, nucleic acids. Levene also discovered that DNA contains nucleobases- adenine, guanine, cytosine, and thymine- as well as a phosphate group and deoxyribose. Levene thought that these bases had a fixed order (77). Then, in 1927, Nikolai Koltsov proposed the function of DNA- that it contains inherited traits and can duplicate because it has two main backbones, one of which is used