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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sweeteners added to food and beverages. However‚ in 1980 the sweetener market steadily increased and high fructose corn syrup quickly became the replacement for sucrose‚ more commonly known as table sugar. Today‚ HFCS represents over 40% of the caloric sweeteners added to processed foods and beverages. It is cheaper‚ half the price of sucrose‚ and prolongs the shelf life of any item. What exactly makes
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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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Sucrose is a disaccharide formed from D-glucose and D-fructose. The glycosidic linkage is between C1 of glucose and the C2 of fructose. 1H NMR of Sucrose: Mass Spectrum of Sucrose: 13C NMR spectra of sucrose: 3. Why is it difficult to isolate sugars? For simple sugars‚ they are small molecules and they behave similar properties that make them hard to separate. Besides‚ sugars are most electrically neutral. The separation of electrically neutral sugars is a relatively difficult and
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