The aim of this experiment is to investigate how potato tissue changes when placed in sucrose solution of different concentrations. Therefore‚ I want to find out if and how osmosis differs‚ when the concentration is changed. Variables What is the variable you are going to change in the experiment? The input variable of this experiment (i.e. the variable to change) will be the concentration of sucrose solution present in the test tubes‚ which the potato samples will be placed into. What
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Osmosis is a specialised form of diffusion. Water moves from an area of LOW concentration of Solute to an area of HIGH concentration of solute through a semi-or fully permeable membrane by the process. Water moves constantly through the cell ’s membrane its estimated that about 250 times the volume of a single cell moves through 1 per second This continues until the solute concentration reaches equilibrium It is convenient to express the available energy per unit volume in terms of "osmotic
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Lab Report Electrical Conductivity Introduction There are some substances that are capable of conducting electricity‚ and the reason they conduct electricity is because of the type of compound the substance is. Electrolytes or any ionic compound conduct electricity and nonelectrolytes do not conduct electricity. An Ionic compound is formed from the electrical attraction between anions and cations‚ typically a metal with a non-metal‚ except hydrogen. When an ionic compound forms‚ the anion
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Six substrates were used. They were the following with the volume of carbon dioxide they produced in cm3. Sucrose –34.35‚ fructose –33.84‚ glucose –31.81‚ starch –1.57‚ and both lactose and distilled water got zero. Some substrates have simple compositions and are easy to break down unlike while some have complex compositions and are hard to break down during
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evolved than MgSO₄. In the second set-up‚ six Smith fermentation tubes were used each containing different 15mL solution (starch‚ lactose‚ sucrose‚ glucose‚ fructose or distilled H₂O). the tubes were then added with 15 mL distilled H2O and 15 mL 10% yeast suspension. Here‚ results show that fructose had the highest rate of respiration followed by glucose‚ sucrose‚ lactose‚ starch and H₂O. Thus‚ simpler substrate would mean higher rate of respiration. INTRODUCTION We all need life to survive. Life
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The higher the solute in solvent‚ then there will be a higher rate of osmosis through the diffusion gradient forming a hypertonic or hypotonic solution. Solvent with equal or no solute forms an isotonic solution. Materials: Distilled water‚ sucrose‚ dialysis tubing‚ string‚ 250 ml beaker. Procedure: To demonstrate and isotonic solution we needed 3 inches of dialysis tubing. We tied off one end of the dialysis tubing to create a bag‚ filled it with distilled water‚ and tie of other end to
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Digestion define as a process where foods been breaking down by enzymatic action in the Gastrointestinal tract (GI tract) into nutrients in preparation for absorption. GI tract is the flexible muscular tube from mouth to anus. The digestion of carbohydrates begin in the mouth‚ where an enzyme‚ salivary amylase (α-amylase;ptyalin) starts to breaking the polysaccharides (starch) into short polysaccharides (dextrin). Dextrin is a partial degradation of starch‚ shorter chains of maltose units. Salivary
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tests will record positive (+) reactions or negative (‐) reactions to fructose‚ sucrose‚ cellulose‚ starch‚ lactose and an unknown carbohydrate. Observations and Results Report your test results in a tabular format • Record the bacteria identified in each of the Four Media Tests. Test Bacterium 1 Test Bacterium 2 Test Bacterium 3 Test Bacterium 4 Gram Stain Gas from Glucose Acid from Glucose Sucrose Lactose Identification Initial color of medium in Gas and Acid from
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The aim of the sixteenth of November experiments was to observe how three different solutions with various sucrose concentration influenced osmosis in relation to three onion cells and the impact on the cells structure. A small square of a red onion skin (membrane) was observed under a microscope at high power (X40) magnification. The observation showed a large number of onion cells. The structure of one onion cell had a general rectangular shape with a developed cell wall‚ which gives the rectangular
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Materials and Method: The experiment was started by adding 10ml of the water-yeast solution to each fermentation tube. There were 12 fermentation tubes that needed 10ml of the solution. Then‚ 3 grams of Sucrose were added to the positive control fermentation tubes. For two of the fermentation tubes‚ 1 gram of Truvia was added‚ and for another two fermentation tubes‚ there was 2 grams of Truvia added. Then‚ 3 grams of Truvia were added into two more tubes
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