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Free research papers and essays on topics related to: starch

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  • Starch - 904 words
    Starch STARCH Starch is a white, granular, organic chemical that is produced by all green plants. Starch is a soft, white, tasteless powder that is insoluble in cold water, alcohol, or other solvents. The basic chemical formula of the starch molecule is (C6H10O5)n. The simplest form of starch is the linear polymer amylose; amylopectin is the branched form. Starch is manufactured in the green leaves of plants from excess glucose produced during photosynthesis and serves the plant as a reserve food supply. Starch is stored in chloroplasts in the form of granules and in such organs as the roots of the tapioca plant; the tuber of the potato; the stem pith of sago; and the seeds of corn, wheat, a ...
    Related: starch, food industry, contemporary society, food supply, preparation
  • Amylase - 309 words
    Amylase The enzyme amylase will catalyze the hydrolysis of starch to maltose when the pH is near 7.0. But when the HCl is added to the solution the amylase will be denatured which results in the enzyme being deactivated. The iodine serves as an indicator for the presence of starch. Iodine (I2) will reach with iodide ion to produce the I3- ion. This ion will form a dark blue complex with the starch molecule. Like most chemical reactions, the rate of an enzyme-catalyzed reaction increases as the temperature is raised. A ten degree Centigrade rise in temperature will increase the activity of most enzymes by 50 to 100%. Variations in reaction temperature as small as 1 or 2 degrees may introduce ...
    Related: frozen, adversely, indicator
  • Biology Molecule - 1,080 words
    Biology Molecule Unit 1 -man is high 50s to 60% water -distribution in body divided into 3 compartments: 1) intracellular - 28 litres 2) intercellular/interstitial fluid - 11 litres - 80% 3) blood plasma - 3 litres - 20% -women contain less water than men -organisms can contain 60-80% water -bacteria have lots of water -fat cells have little -waters properties result from its structure and molecular interactions -water is polar -polar covalent bonds and asymmetrical shape give it opposite charges on opposite sides -electrons spend more time around O giving H a slight positive charge -hydrogen bonds form between the oxygen of one molecule and the hydrogen of another -cohesion: substance being ...
    Related: biology, molecule, nucleic acids, human body, atom
  • Carbohydrates - 1,547 words
    Carbohydrates INTRODUCTION A theme that we have seen and studied in this class is that a particular form or structure of a molecule plays a significant role in the function of that molecule. Since we are interested in the function of molecules. it helps to study their structure. One of the major classes of organic compounds found in cells are carbohydrates. These carbohydrate are made of carbon, hydrogen, and oxygen in a ratio of 1:2:1 respectively with a general formula of X(CH2O)n. When the carbohydrates consists of one unit of sugar, X=1, it is called monosaccharide. If it consists of 2 units, X=2, the carbohydrate is called disaccharide. Carbohydrates made up of more than two units, X>2, ...
    Related: building blocks, linkages, benedict, potatoes
  • Chemistry Research - 2,121 words
    Chemistry Research CHAPTER 32 The tallest tree is the Redwood (Sequoia sempervirens) approx 110 m The tallest Angiosperm is the Australian Eucalyptus regnans Water Uptake and transport (Fig. 32.1) = water is essential because: transport solute, cool the body, photosynthesis and Turgor pressure Osmosis- movement of H2) through a semi-impermeable membrane Osmotic potential ( o)-depend on dissolve solute: Hi concentration means more negative o. Isoosmotic-two solution with same o; Hypoosmotic- solution that has a less negative o(more +) Turgor Pressure -hydraulic pressure result from water up take, cell turgid; analog to air pressure in a tire Water Potential ( )-Overall tendency of a solution ...
    Related: chemistry, respiratory system, nervous system, endocrine system, poison
  • Cocaine - 1,399 words
    Cocaine Cocaine When you reach into the refrigerator for a Coca-Cola, do you ever wonder where it got its name? You might be surprised to find out! When coke was created 120 years ago, it contained cocaine (Bayer 27). At the time scientists did not realize that cocaine was addictive and dangerous. Scientists today know that cocaine is among the strongest stimulants known, and trying the drug even one time can cause heart attack, stroke, and even death. Even the most in shape athlete could die from one use (Bayer 26). The history of coca leaves began hundreds of years ago in South America. The Indians of Peru and Bolivia chewed coca leaves so that they could work hard in high altitudes and ne ...
    Related: cocaine, drug testing, human body, save lives, tasks
  • Color Theory - 1,472 words
    Color Theory Color photographs begin as black and white negatives. Color film consists of three layers of emulsion, each layer basically the same as in black and white film, but sensitive only to one third of the spectrum (reds, greens or blues). Thus, when colored light exposes this film, the result is a multilayered black and white negative After the negative images are developed, the undeveloped emulsion remaining provides positive images by reversal. The remaining emulsion is exposed (chemically or with light) and the film developed a second time with a different developer. As it converts the light-sensitive silver compounds to metallic silver, the developer becomes oxidized and combines ...
    Related: methods used, real world, complementary colors, mosaic, random
  • Color Theory - 1,552 words
    ... ensations can be produced this way, including those red-blue mixes (purples and magentas) not found at any wavelength band in the spectrum. In photography, the principles of additive color synthesis underlie making separation negatives for photomechanical reproduction of color images, and dye transfer and similar printing processes. It was also the principal behind the Autochrome film process and similar screen processes. In the darkroom, additive color printing uses red, green, and blue exposures to obtain prints from color negatives and transparencies. ( 1 ) The Grainmaker filter relies on this principle of additive color printing. AUTOCHROME was a photographic transparency film patent ...
    Related: over time, isaac newton, visible spectrum, photographer, knife
  • Control In Cuckoos - 1,595 words
    ... the party, because he worries Nurse Ratched will regain control if he escapes. The climax of the novel, the final battle for control between McMurphy and Nurse Ratched is the ultimate testimony to McMurphy's noble motive for controlling the Ratched and the others. Nurse Ratched arrives in the morning after the party to find her patients hung over and her most controllable patient, Billy Bibbit, in bed with Candy Starr. Nurse Ratched tries to use her control over Billy against him by threatening to expose the events to his mother. This plan disastrously backfires as Billy commits suicide. Nurse Ratched sees an opportunity to win the control battle by blaming McMurphy for Billy's death an ...
    Related: world series, book reports, shock therapy, crawford, confident
  • Diabetes - 3,161 words
    Diabetes Diabetes Diabetes, Diabetes Mellitus, is a chronic illness this means that it has no cure and the symptoms persist over a long period of time. This illness is a result of an imbalance of hormones, insulin, produced in the pancreas. Insulin plays an important role in how the body uses food. Insulin enables the cells in the bloodstream to absorb and use glucose for fuel. If the pancreas produces too little or no insulin or if the insulin doesnt work properly the person may become diabetic. Therefore, diabetics are not able to properly convert food into fuels needed by the body to function, which can seriously lead to physical consequences. The pancreas, located behind the stomach, is ...
    Related: american diabetes, dependent diabetes, diabetes, diabetes association, diabetes insipidus, diabetes mellitus, insulin dependent diabetes mellitus
  • Diets - 284 words
    Diets NTR 109 My diet is acceptable in the following Macronutrients: dairy group (3 servings), vegetable soup (3 servings), fruit group (4 servings), and starch/grain (7 servings). I take in over 100% RDA for vitamins and mineral (macronutrients) with my diet plus additional vitamin and mineral supplementation (Centrum), vitamin E and Echinachea. I take an average of 33.5g of dietary fiber calories is 112% RDA which is acceptable. According to the analysis of the 3 day food record it says that I consume too much fat (servings) and protein: (147g/ day) which is 253% the RDA. I know that I consume a tremendous amount of protein a day but my dietary goals from project I was to consume enough pr ...
    Related: amino acids, relieve stress, body mass, grain, soup
  • Human Genome Project - 970 words
    Human Genome Project Human Genome Project The Human Genome Project (HGP) is an international 13 year effort that began in October of 1990. The main objective of the project is to map the entire human DNA sequence. The project was planned to last 15 years, but rapid technological advances have moved the completion date to 2003. A rough draft of the human genome was completed in June 2000. Efforts are still underway to complete the finished high quality sequence. Many laboratories around the United States receive funding from either the Department of Energy (DOE) or the National Institutes of Health, or from both, for the HGP. Other researchers at colleges, universities, and laboratories throu ...
    Related: genome, genome project, human evolution, human genome, risk assessment
  • Hunters Gatherers - 306 words
    Hunters & Gatherers Anthropology 1010: Assignment 1 The Asmat, Headhunters, people are located in New Guinea's West Iran. These people actually cut off people heads and eat their brains and wear their jaws as a necklace. People's brains are not their main source of food. The major food of these people is the starch of the sago palm that they roast. The sago palm is found deep into the swamps. You take an ax and split the palm in to two pieces. The food inside is called sago grub. The sago grub is soft white larva of the Capricorn beetle. They put it on a stick and roast it in the fire. The Asmat villages are always located by water and the houses are raised on poles above the mud. When high ...
    Related: gatherers, new guinea, national geographic, iran, capricorn
  • Kudzu Is A Major Threat To Michigan In This Report I Will Discuss Many Factors As To Why Kudzu Is A Threat, And What We As A - 1,922 words
    Kudzu is a major threat to Michigan. In this report I will discuss many factors as to why kudzu is a threat, and what we as a state can do about it. The reason I chose this topic was that I have lived in the south for most of my life, and have seen the effects of Kudzu. This plant is very threatening to us agriculturally as well as economically, and we need to deal with this problem now, before it spreads up into the beautiful landscape of Michigan. Kudzu is a climbing, semi-woody, perennial vine in the legume family. It has deciduous leaves, with three broad leaflets that measure up to four inches across. Its individual flowers are a half inch long, purple, highly fragrant, and are born in ...
    Related: michigan, united states today, soil conservation, state university, exotic
  • Membrane - 229 words
    Membrane The membrane has a double lipid layer through which fat- soluble substances will move, by passive transport or diffusion. The molecules will only move through if they are small enough. There are globular protein regions, which are hydrophilic. These regions allow water and water soluble substances through, but only if they are small enough, for example starch grains are too big. These substances move through by passive transport or diffusion. Diffusion is the passive movement of substances from a high concentration to a low concentration ( N.B., you don't need a membrane present, e.g. diffusion occurs in the air). In CONTRAST, diffusion of water across a semi- permeable membrane is ...
    Related: membrane, osmosis, layer
  • Membrane Physiology - 1,217 words
    Membrane Physiology Introduction The cell membrane is a fluid structure that is made up of phospholipids and proteins. Its main function is to allow osmosis and diffusion to occur in a cell. It protects a cell from taking in molecules that are too large and other chemicals that are not permeable without energy being used. The cell membrane is considered to be selectively permeable because it does not allow the non-fat soluble chemicals and the larger molecules in, but it does allow fat soluble chemicals and small molecules to pass into the cell. In order for the larger molecules and non-fat chemicals to enter the cell protein channels and energy are needed. In this lab you will see the cell ...
    Related: membrane, physiology, different levels, methods used, healthy
  • Microscope Types - 1,321 words
    ... own as the corpus hemorrhagicum. Cells of the membrane granulosa are transformed into large granulosa lutein cells. Moreover, the cells of the theca interna also increase in size to become theca lutein cells, although they remain smaller than the granulosa lutein cells. Corpus Albicans (D) The corpus albicans is a corpus luteum that is in the process of involution a hyalinization. It becomes fibrotic with few fibroblasts among the intercellular materials. Eventually, the corpus albicans will become scar tissue on the ovarian surface. TESTES Capsule The fibromuscular connective tissue capsule of the testes is known as the tunica albuginea, whose inner vascular layer is the tunica vascul ...
    Related: microscope, scar tissue, stem cells, cell structure, plant
  • Nutrients In Food - 1,124 words
    Nutrients In Food This experiment has to do with foods and their nutrients. We are finding out how much nutrients these 6 specific foods have and don't have: cheese, hotdogs, egg yolk, egg white and potato. We are testing them for starch, sugar, fat and protein. For my hypothesis I will start with starch. I think that cheese would not have that much starch in it for the reason of this cheese is a dairy it is made out of milk. Hotdog's don't have starch because it is a meat and meat does not have starch in it. My next food is egg yolk. Egg yolk is also a dairy so just like cheese it is made out of milk also so egg yolk does not have starch either. Egg white is a dairy too so it too has no sta ...
    Related: protein, potato, holder
  • Nutrients Lab 1 - 422 words
    Nutrients Lab #1 LAB #1 Nutrients Introduction: In the introduction for "Nutrients" Lab #1 I will be discussing the different items I will be using for this lab. Fat or lard is a molecule that is high in cholesterol. Starch is a complex carbohydrate. Protein means a group of molecules made up of chains of smaller molecules called amino acids. Sugar is a molecule that serves as building blocks for complex carbohydrates. Nutrients are substances that all organisms need to live. Nutrients are also very important because it gives you everyday energy. Hypothesis: I think this lab will work well because the materials were brought all Part 1: Starch- Foods like garlic salt have cornstarch inside of ...
    Related: building blocks, amino acids, sugar, protein
  • Nutrition - 1,149 words
    Nutrition Most people know that good nutrition is important for good health. Recommended Dietary Allowances (RDA) are the daily amounts of essential nutrients that will prevent deficiencies in most healthy people. But not many people realize the importance a healthy diet can have on their health for years to come. To help us stay healthy a person should eat a variety of foods, maintain ideal weight, avoid too much fat, and eat foods with enough starch and fiber. A good diet helps children grow, develop, and do well in school. It also helps young and older adults to work productively and feel their best. A healthy diet can also lessen the risk factors for obesity and high blood pressure. For ...
    Related: good nutrition, nutrition, human services, vitamin c, administration
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