Compare the increase or decrease of pH in different solutions to the pH of the distilled water.
The purpose of this lab was to determine the percent water in magnesium sulfate heptahydrate, or Epsom salt. The experimental percent water is determined to be 42.06% in both trials, making the average also 42.06%. To determine this percent water a heating and cooling procedure was used. First, the vials were cleaned of impurities using the lab oven and were not touched after this point. The 2 vials were then weighed and vial 1 weighed 14.7681 grams and the second vial weighed 14.7451 grams. Next 1.1075 grams of the hydrate was added into vial one and 1.1015 grams was placed into vial 2. The vials were then placed back into the oven with a starting weight of 15.8756 for the first vial and 15.8466 grams for vial 2. Once they were taken out of the oven and cooled they were weighed
Using the data provided in each one of these tests it can be assumed that one has done the steps to be able to determine the magnitude and orientation of the charges of the tape in each test, thus, allowing them to apply the same principle to any object they so desired. Their results would line up with the following; that if the two pieces of tape are torn from the same 40 centimeter strip then the tops of both pieces of tape would be positive and the bottoms of both pieces of tape would be negative and that if they would double the tape the attraction or repulsion in general would lower due to the increased density. Their data would also show that two pieces of tape ripped from each other would result in one piece being entirely positive and the other being entirely negative, they would also be able to state that the orientation of how the tape is paired up doesn’t matter.
After effectively conducting the experiment, the results acquired clearly shows the impacts of the variables applied and materials used to create a stimulus on the daphnia which can be seen with changes in its movement behavior and heart rate. With a certain level of knowledge in biology, some of the results and responses obtained were as expected, corresponding to the changes inflicted on the daphnias.
Dr. Marshall Westwood had a meal of puffer fish and rice for dinner in Indonesia on his recent trip. Within an hour, the numbness starting from his lips and tongues quickly spread out through his face and neck, and he had pains in stomach and throat with symptoms of severe nausea and vomiting.
Physical activity, specifically aerobic exercise, increases hippocampal and medial temporal lobe volumes, so these parts of the brain in higher-fit adults are significantly larger. This could imply that exercise is a stimulus to hippocampal plasticity.3,4 Plasticity refers to modification of neural tissue of the living brain and nervous system in response to experience and injury.
Enzymes are an important part of the cell and are crucial to sustaining a healthy life for an organism. An enzyme is a protein, composed from amino acids, and an enzyme’s role in the cell is to increase the cell’s ability to perform chemical reactions (Brain 2000). The chemical reactions that cells perform are critical to the development of cells and are how cells grow (Brain 2000). Tyrosinase is an enzyme that is commonly found in plants, and its function is to cause plants to brown, a process known as melanization (Chang 2012). Dihydroxyphenylalanine (DOPA) is an amino acid that reacts with Tyrosinanse, and this reaction eventually leads to create melanin, a product of melanization (Waite 1991).
Amyotrophic Lateral Sclerosis (ALS) is a relatively elusive disease. ALS is a disease that affects the large upper and lower motor neurons of the motor cortex, brain stem, and spinal cord . The destruction of the upper and lower motor neurons causes progressive paralysis. Even with research of ALS beginning in 1869, and becoming more widely known in 1939 (About ALS), the cause is still being heavily researched. Luckily, scientists have come across quite a few theories as to the cause of ALS. The validity of many of the theories are still being tested, but a few of them have found their way to being a staple in ALS etiology.
Hyperkalemic Periodic Paralysis, also known as HYPP, is caused by a mutation of the SCN4A gene. The SCN4A genes job is to give instructions to make a protein that gives muscles the ability to move, like the skeletal muscles. Normal muscle movements include the tensing up and easing of muscles in a coordinated way. When these muscles tense up a flow of positively charged sodium atoms are released into the muscles. The SCN4A protein builds pathways that regulate the flow of sodium into these cells.
No matter how much you tried to avoid them, almost everyone battles an ant infestation at one point or another. Its easy for them to get inside your home, since they are tiny and can fit in almost any crack within your home. Plus, they are attracted to the smells of food inside, and anything left out only makes the infestation worse. Here are a few remedies to get rid of ants.
In this experiment, Tetracycline and Ampicillin were used to test for the antibiotic resistance of Pseudomonas fluorescens, lab-grown bacteria. The bacterial colonies showed resistance to Ampicillin; however they did not show resistance to Tetracycline. The results suggested that Tetracycline was much more effective in killing the bacterial growth, in comparison to Ampicillin. It was confirmed that a single dose of Tetracycline had killed the surrounding bacterial growth, as the bacterial colonies around where the drug had been placed, died and showed no growth. The bacterial plates also suggested that Ampicillin was ineffective in killing the bacteria, as zones of inhibition were not present, despite using two disks of this drug. These results could possibly be explained by the properties of these antibiotics and the bacteria used in the experiment. Bacterial enzymes, such as beta-lactamase, cannot be broken down by Ampicillin. The bacterial plasmid carrying this enzyme disables the Ampicillin placed in the agar, allowing for more bacterial growth. In this case, it is
Monosodium L- glutamate (MSG) is a major flavor enhancer used as a food additive; its concentrations vary in different foods (Walker et al., 2000). Nowadays, the safe concentration of MSG in foods and its toxicity in human is still a controversial issue (Beyreuther et al., 2007). In animals, MSG at higher doses was demonstrated to be a neurotoxic salt that could alter the hypothalamic-pituitary-adrenal axis (HPA) and damage neurons in the hypothalamic nuclei. The ability of monosodium glutamate to damage nerve cells of the hypothalamus is a pointer to the fact that it may alter the neural control of reproductive hormone secretion via the hypothalamic-pituitary-gonadal regulatory axis. Such alterations in reproductive hormone secretion may adversely affect the reproductive capacity of the affected animals (Seo et al., 2010). Those findings imply that free glutamate dissociated from MSG may act on their specific receptors in the central neurons or some peripheral cells, resulting in their pathological alterations. Several reports have recently been indicating that administration of MSG may affect
Besides, consuming acesulfame potassium in long term will apparently produces tumors in breast, lung and even thymus gland. There are also some forms of leukemia and chronic respiratory disease in rodent
Monosodium glutamate (MSG) works as a flavor enhancer that's added to thousands of the foods you and your family regularly eat. Even though it is clear to recognize the benefit of MSG in food industry, there are many anecdotal reports of adverse reactions to foods containing sodium glutamate. This report will present the health concerns related to sodium glutamate and how to use this spice.
Melamine is a commercially synthesized organic compound which is illegally added to milk products while processing in order to boost the apparent protein content. As Melamine cannot be metabolized by the body, it forms insoluble crystals which lead to tissue damage and renal dysfunction. So, there is a need to develop a rapid and reliable method for melamine detection. Out of many detection methods available, use of silver nanoparticles (AgNPs) in detection is a simple and cost effective method. In this paper, the AgNPs are synthesized by three methods: borohydride reduction method, citrate capped nanoparticles and PVP capped nanoparticles and characterized for their shape and structure. It is observed that the nanoparticles synthesized