Alzheimer’s disease is slow-fatal disease of the brain, affecting 1 in ten people at the age of 65. No one is immune. The disease comes on gradually as two abnormal protein fragments called plaques and tangles accumulates in the brain and kill brain cells. They start in the hippocampus. Where memory where first formed .over many years time plaques and tangles slowly destroy the hippocampus and it becomes harder and harder to form new memories. Simple recollection from a few hours or days ago but
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Introduction & Hypothesis: Enzymes are important for every living organism, because they are the reason that reactions occur. Although most reactions would take place without enzymes, enzymes allow these chemical reactions to happen at a much faster rate, therefore making cells more efficient (Reece, 2011). Enzymes are catalysts, and almost always proteins, that speed up the rates of reactions by lowering the activation energy without being consumed in the reaction (Helms, 1998). Throughout this
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Aseptic packaging or processing is where a food product, such as ultra-high temperature (UHT) milk) and its package is sterilized separately and then combined and sealed under sterilized atmosphere. The first practice of this was in Denmark in 1913 packing milk in metal cans. In 1921 a patent was granted for the process under the term aseptic conservation. In 1923 aseptically packaged milk from South Africa was shipped to London to a trade fair and it arrived in perfect condition. In 1933 a filling
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1. Introduction: Chitosan is a natural biodegradable polymer composed of 2-amino-2-deoxy-β-D-glucose (D-glucosamine) with β (1-4) linkage, and with occasional N-acetyl glucosamine residues (Austin et al., 1981). This is a biopolymer that is consistently playing an important role in the world’s economy since it is biocompatible, biodegradable, edible, and antimicrobial (Muzzarelli & Muzzarelli, 2005). As compared with other bio-based food packaging materials, chitosan has antibacterial activity by
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Enzymes are biological catalysts that carry out thousands of chemical reactions that occur in living cells. Most of them are proteins. They speed up metabolic reactions in the body but remain chemically unchanged themselves In the experiment, the enzyme amylase was involved.this enzyme takes part in the digestion ofcarbohydrate. digestion is the break down of large complex and insoluble food into small simple soluble molecules for the body to absorb it. starch is a complex, the body have
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In order to understand hypercholesterolemia and hyperlipidemia an understanding of what cholesterol and lipids mean and do for an organism. Lipids are molecules that contain hydrocarbons and make up the building blocks of the structure and function of living cells. Examples of lipids include fats, oils, waxes, certain vitamins, hormones and most of the non-protein membrane of cells. Lipids are insoluble and nonpolar there for are not soluble in water. Fatty acids are long chain carboxylic acids (typically
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ABSTRACT: This experiment was to observe diffusion happening within the cells, and to help understand the sizes of molecules and how the chemical reactions take place. Therefore, the experiment was conducted using glucose and starch solution inside the dialysis tube. The starch and glucose that was put inside the dialysis tube help identify which of the two will reacted with potassium iodide inside the breaker, as the latter passed from the beaker into the tube, the glucose/starch solution's change
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ascertained the underlying response speed of the concoction response and confirmed that pH 7.0 was the ideal pH for this compound response since it had the most elevated IRV. INTRODUCTION: Enzymes are very unique and important to the well being of humans,
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on the ways enzymes work. It also will give information on the role of substrates and how it affects enzymes. In the first experiment, we examined whether or not the speed of the reaction will be influenced positively by an increase of heat to a point where it will not be denatured, but negatively by a decrease of heat. In the second experiment we looked to see if the speed is influenced positively by an increase of enzymes to a point, but negatively affected by a decrease of enzymes. For the third
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1. What is the definition of a cytokine? Cytokines are a group of the multi-functional protein. In general, cytokines are produced by immune cells to communicate and operate the immune response mechanism. The cytokines are produced by different cell types, including lymphocytes (T and B), monocytes, and eosinophil. The cytokine binds to a specific receptor on the membrane for their target cells trigger the signal path inside cells and eventually lead to change gene expression of the target cell
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