Arushi Grover ‚ Sheldon Fernandes‚ Jervis Fernandes‚ Lisha Almeida Silvia Fernandes‚ Krisann Garrard. The effect of Lead Toxicity on Pollen germination. Received: 15th February 2012 Abstract: Pollen obtained from the Hibiscus rosa-sinensis‚ commonly known as the Hibiscus flower were exposed to different concentrations of Lead to understand the effect of heavy metal on pollen tube germination. Heavy metals such as Lead‚ have shown to decrease the pollen germination and inhibit pollen
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iodine into one test tube and 2-3 drops of AgNO in the other test tube. C. Osmosis using dialysis tubing as a model of the cell membrane Obtain 5 beakers and label them 1-5. Fill beakers 1-4 halfway with distilled water. And beaker 5 with 30% sucrose halfway. Obtain 5 dialysis tubes that will be filled with 10ml of different solutions. Tube 1 has distilled water‚ Tube 2 has
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dialysis tubing‚ 25 mL of sucrose solutions with concentrations of 0.02 Molar‚ 0.04M‚ 0.06M‚ 0.08M‚ 1.0M‚ as well as 25mL of distilled water‚ six 250 mL beakers‚ a balance‚ and paper towels. We first cut the dialysis tubing into 6 pieces‚ each 1ft. long‚ and placed them into a beaker of water. We then tied off the dialysis tubing and poured 25 mL of distilled water in. We repeated this with the rest of the five pieces dialysis tubing‚ pouring a different molarity of sucrose solution in different dialysis
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As long as you are alive‚ your body will constantly metabolize organic molecules and produce waste products. If you can not get rid of these metabolic waste products‚ they will accumulate to toxic levels and poison your body. The urinary system is very important because it perform the essential function of getting rid of these metabolic wastes. Main Structures of the Urinary System The main structures that make up the urinary system are two kidneys (contains nephrons)‚ two ureters‚ one bladder‚ one
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The objective of this experiment was to learn the process of recrystallization and how this process removes the impurities from a pure solid compound. The methods used to achieve this objective were also hot vacuum filtration in order to remove suspended solid impurities‚ and isolating the pure acetanilide. In the next lab‚ percent recovered was obtained through weighing the acetanilide sample as well as comparing its melting point range. In this experiment‚ the sample‚ acetanilide was weighted
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highest rate of cellular respiration was glucose followed by fructose‚ honey‚ sucrose. Lactose‚ galactose‚ and water all had the same final rate of cellular respiration. Figure 1. The rate of cellular respiration over time in the carbohydrate compounds glucose‚ fructose‚ lactose‚ galactose‚ sucrose‚ honey‚ and water. The final absorbance rates for glucose was 1.8‚ fructose 1.7‚ lactose 0.6‚ galactose 0.6‚ sucrose 1.5‚ honey 1.6‚ and water 0.6. In the second experiment we measured the rate of
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helpful service in performing the experiment. iC BS E .co m Parichay Saxena Roll NO : Objective: The goal of this project is to measure the solubilities of some common chemicals: • Table salt (NaCl) • Epsom salts (MgSO4) • sugar (sucrose‚ C12H22O11). iC BS E .co m Introduction A good part of the substances we deal with in daily life‚ such as milk‚ gasoline‚ shampoo‚ wood‚ steel and air are mixtures. When the mixture is homogenous‚ that is to say‚ when its components
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of them; 37 features were variable. By numerical analysis all strains formed one cluster above the simple matching coefficient of 0.88. There were no significant differences between motile and nonmotile strains or between sucrosefermenting and non-sucrose-fermenting strains. A strain from sick cider in Bristol‚ United Kingdom‚ was a border case in its phenotypic features‚ deoxyribonucleic acid relatedness‚ and protein electropherograms. We propose: (i) to discontinue the use of the species name of
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customers or potential buyers may use as an alternate or substitute of your products. An example of direct competitor is Seychelle Water Filtration company‚ they are a fast growing water company. They have complete portable water filtration products and brands in North America and world wide with breakthrough technology. Seychelle have a similar water filtration water bottle with a flip top and advanced water filter. They claimed that removes 99.99% of pollutants up to 100 gallons. They package includes
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positive‚ since unknown number five was determined to be gram positive rod. The other tests were performed in this order: Mannitol Salt (MSA) streak‚ Blood Agar streak‚ Catalase test‚ Nitrate Reduction test‚ and Phenyl Red Broth test for lactose and sucrose fermentation. After performing a gram stain on unknown number five‚ number five was determined to be gram positive rod. On the TSA plate‚ number five had the following morphology: very large‚ raised‚ opaque cream color colonies that covered the
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