strip will increase in water and dilute concentrations of sucrose depending on the concentration within the cell. When the concentration of the sucrose solution outside the cells of the potato strip will be less‚ the mass of the solution will increase as water molecules from outside will diffuse into the cell (diffusion of water molecules from area of higher concentration to area of lower concentration). When the concentration of the sucrose solution outside the potato cells will be more‚ the mass
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mass . CONTROL VARIABLE : Initial mass of mustard green . APPARATUS AND MATERIAL : Mustard green ‚ solution of sucrose with concentration of 0.5% ‚ 1.0% ‚ 1.5% ‚ 2.0% and 2.5% ‚ filter paper ‚ cork borer ‚ knife ‚ beaker ‚ test tube ‚ electronic balance ‚ stopwatch . PROCEDURE : 1) Cut a mustard green and weight it to 5 gram 2) Fill up six beaker labeled A to F with sucrose solutions of concentration 0.5%‚ 1.0%‚1.5% ‚ 2.0% and 2.5% 3) Immerse one mustard green into each of the beaker
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I have been asked to investigate the effects of osmosis on potato cell sap. I will test potato cylinders in different strengths of sucrose solution and record any results in a table. I will then analyse my findings and work out the isotonic point of the potato cell sap. Prediction I have looked at my scientific knowledge from the background theory I carried out and I will base my prediction upon this information. In this experiment‚ I expect the different concentrations to show fairly noticeable
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identify the component of the solution in its pure form with various food tests and state the justifications. Apparatus : Test-tube ‚ test-tube holder ‚ water bath 95’c ‚ measuring cylinder ‚ white tile ‚ test-tube rack . Materials : Glucose‚ sucrose ‚ fructose ‚ hydrochloric acid ‚ potassium hydroxide ‚ albumin ‚ cooked starch ‚ corn oil ‚ copper (ll) sulphate solution ‚ ascorbic acid solution ‚ DCPIP solution ‚ Millon’s reagent ‚ Sudan lll ‚ tap water‚ ethanol ‚ iodine solution ‚ Benedict’s
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Taste Threshold Bottle no.1 has the lowest concentration of the carbohydrates while bottle no.10 has the highest concentration of the carbohydrates. |Groupmate |1 |2 |3 |4 |5 | |Bottle no. of sucrose |4 |4 |3 |3 |2 | |solution | | | | | | |Bottle no. of glucose |7
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of a different solution to each test tube. After that‚ we added 3 drops of iodine to each solution. Finally‚ we jotted down the results and colors of each tube. The experimental group is 5mL of each of these solutions: onion juice‚ potato juice‚ sucrose‚ glucose‚ distilled water‚ reducing sugar‚ and starch. There is no control group because all the solutions are being experimented on. Iodine is the independent variable because you control how many drops of iodine are put in each solution‚ while the
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transformation of ketoses to aldoses‚ resulting in all monosaccharides and most disaccharides reducing the blue Cu2+ ion to cuprous oxide (Cu2O)‚ a brick red-orange precipitate. Examples of reducing sugar are glucose. Examples of non-reducing sugar are sucrose. Monosaccharide‚ which is smallest carbohydrates molecules‚ can be described by the number of carbons in the chain so that a monosaccharide with five carbons in a chain is a pentose and one with six carbons is a hexose. A monsaccharide contains one
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Introducton : The most common macromolecules found in living organisms are carbohydrates ‚ lipids‚ proteins and nucleic acids. Briefly‚ the meaning of macromolecules is that they normally contain two or more molecules in them and their main functions are to store energy‚ information and much more. Most foods are known to be combinations of macromolecules. While some of these compounds can be detected by taste tests‚ many cannot. Scientists then use certain tests to determine the presence of
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INTRODUCTION Macromolecules are highly important organized organic molecules that are found within living cells. These biological molecules help the body execute precise important tasks. There are four types of macromolecules: carbohydrates‚ lipids‚ proteins and nucleic acids. (Karp‚ 2010) This specific experiment showcased the identification of different macromolecules using three different testing methods. Carbohydrates‚ sugar molecules‚ are known as “fast fuel” in the body‚ and they contain
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Sugar is sucrose that is extracted from sugar beets and sugarcane. Sucrose‚ or table sugar‚ is the most common added sugar‚ and is found in the form of high fructose corn syrup. Americans consume up to 60 pounds of sugar in one year‚ that is 76.7 grams of sugar per day‚ which equals 19 teaspoons or 306 calories! This number is much larger for people that eat more processed foods or drink soda beverages on a regular basis. No sugar is healthy‚ but an average amount of sugar for men‚ should be around
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