Extraction of DNA from an Onion Molecular biologists and biochemists are involved with research in finding out as much as possible about the DNA in plants. DNA was discovered in the 1950’s‚ there still remains a lot to be known about it‚ especially how it is used to determine the physical traits that we all have‚ and how it regulates the workings of the body. deoxyribonucleic acid is a chemical‚ we can do reactions with it just like we can work with any other chemical. Experiment: Note:
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Molecule of an Onion In an Aqueous Solution By: Introduction DNA(deoxyribonucleic acid) is found in every living organism. It provides the information and instructions to build and regulate cells in organisms. The information it contains is used when organisms are being reproduced. It is made up of two polynucleotide chains known as DNA strands. Within the two chains there are four nucleotide units: adenine‚ thymine‚ cytosine‚ and guanine. Materials and Methods An onion was cut into pieces
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MONOLOGUE FOR AN ONION: AN ANALYSIS Cutting an onion breaks cells in its skin causing a reaction that results to the formation of volatile sulfur compound which‚ when mixed with tears coating our eyes‚ becomes sulfuric acid. This triggers the tear ducts to produce more tears to alleviate the imbalance in acidity the irritant has caused; the longer the eyes are exposed to the acid the greater the quantity of tears produced. Sue Kwock Kim uses this certain property of an onion to tackle a specific
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I. Science Fair Question How do digestive enzymes convert sucrose and lactose into glucose? II. Background Research Do you enjoy eating smoothies packed full of berries and other tasty fruits? This paper is going to discuss how digestive enzymes convert sucrose and lactose into glucose. The following terms will discuss; Sucrose‚ Glucose‚ Lactose and Digestive Enzymes. Sugar is any of a class of crystalline carbohydrates such as sucrose‚ glucose‚ or lactose‚ that dissolves in water and have a characteristic
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Urbina Post Harvesting Onion Basic Storage & Handling Tips for Dry Bulb Onions: Always handle onions with care. Do not drop onions as this often causes bruising and internal decay. Bagged or boxed onions should be stored at least one foot away from walls and other pallets to allow proper air movement. Keep stacks of bags or boxes at five feet or less. Store onions in a cool‚ dry‚ well-ventilated area. Maintain storage temperature of 45-55°F. Do not wrap onions in plastic or store in plastic
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11. Then add the benedict’s solution to the sucrose beaker. Put water in the 400ml beaker‚ and put it on the hotplate to start to boil the water. 12. Then stand the test tubes in boiling water for a few minutes. 13. A color change through green to yellow‚ brown and finally to red indicates the presence of reducing sugar. 14. Repeat 3 times‚ washing the materials each time you finish one cycle 15. Then you have our standard for have a standard for the rest of the experiment. 16. Then you have a standard
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of the solutions is inside the vacuole of a potato cell. We will investigate how the mass of the potato chips change in different sucrose solution concentrations. We will use osmosis to do this. I will be measuring and controlling many different variables‚ these include; - The dependent Variable Weight of potato chip Independent Variable Concentration of sucrose Control Variables consist of; - 1. Temperature 2. Surface area of potato 3. Volume of sucrose solution 4. Same
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Looking at onion cells using a light microscope. Apparatus; - 1x Light Microscope. - 2x Pipettes. - 1x Beaker (100 ml). - 1x Small Onion. - 1x Knife. - 1x Forceps. - 1x Microscope Slide. - 1x Cover Slip/Glass. - Water. - Iodine Solution. - Marble Tile. - Plastic Gloves. - Window/Strong Light Source. Pre-Practical - Setting Up the Experiment; Place the onion onto a marble tile. Using a knife‚ chop the onion into pieces that are roughly 1.5-2 centimeters. Then discard the rest of the onion. Place
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Satirical Essay With an increase in consumer culture and a minimal amount of common sense‚ the onion uses a satirical tone to draw attention to the consumer’s gullibility and the power of the advertising industry. Through subtle humor‚ the Onion is able to successfully mock the intriguing diction of genuine advertisements. The advertisement claims that through “no fewer than five forms of pseudoscience”‚ Magnasoles are able to “stimulate and soothe” consumers feet. This directly mocks the unanimous
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OSMOSIS Han Cheng Water passes through aquaporins in cell membranes from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration). This process is called osmosis. It requires no cellular energy to be used‚ and occurs due to the random‚ continuous motion of all molecules. If a cell is placed in an environment in which the concentration of water is less than in the cell (hypertonic)‚ water will flow from the cytoplasm and/or
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