The two factors that we will be testing in this experiments are: Lactase Enzyme and Lactose. Lactase is a protein located in the human small intestine‚ while lactose is a term to define the sugar found in milk. Milk is a substance that contains nutrients necessary for our bodies‚ however‚ some people are unable to consume lactose related products‚ and so they are medically classified as Lactose Intolerants. The purpose of this experiment is to examine and illustrate the way that lactose gets affected
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Concentration of Potatoes Lab #1 Purpose: To find the molarity/concentration of potato cytoplasm. Materials: As on page 1 in the lab handout. Procedure: As on page 1 in the lab handout. Data and Observations: Test Tube # | Concentration of sucrose solution (mol/L) | Initial Mass (g) | Final Mass | Percentage change in mass | 1 | 1.0 mol/L | 3.00g | 2.25g | -25.0% | 2 | 0.9 mol/L | 2.70g | 2.07g | -23.3% | 3 | 0.8 mol/L | 2.92g | 2.25g | -22.9% | 4 | 0.7 mol/L | 2.60g | 1.94g | -25.4%
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Five separate dialysis tubes were filled with 10 mL each of tap water‚ 20% sucrose solution‚ 40% sucrose solution‚ 60% sucrose solution and another tap water. The first four bags were then added to 200 mL beakers filled with water. The last dialysis tube was added to a 200 mL beaker of 60% sucrose solution. Over the course of an hour‚ each bag was periodically dried and then weighed for the experiment. The question for the second experiment
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00372 moles hydrochloric acid in 2.39 x 10-2 liters of solution? 0.00372 mol HCL = 0.156 M HCL 2.39x10-2 L soln 4. A flask contains 85.5 g C12H22O11 (sucrose) in 1.00 liters of solution. What is the molarity? 85.5g sucrose x 1 mol sucrose = 0.250 M sucrose
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significant concentrations of ions‚ the ions more between the electrodes to complete the circuit(which includes a light bulb).Tapwater and distilled water are examples of non-electrolytes. A solution of a weakelectrolytes‚ acetic acid (CH3COOH)‚ 5% sucrose solution; it contains low concentrations of ions and so the bulbglows dimly. A solution of a strong electrolyte‚ HCL‚ NaOH‚ NH4CL‚ NaC‚ conc.H2SO4; it contains a highconcentration of ions and so the bulb glows brightly. Introduction
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tubing and then tied of the other end securely leaving room for expansion. Then blotted the tube dry and placed it in the cup labeled “water”. Then we repeated the same process witht eh remaining five pieces of dialysis tubing‚ adding a different sucrose solution to each bag: 0.2 M‚ 0.4 M‚ 0.6 M‚ 0.8 M‚ and 1.0 M. After‚ we then weighed each bag and recored each bag’s initial mass in Table 2. Then filled the six plastic cups approximately ¾ full of distilled water and immersed one bag in each of
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DETERMINATION OF THE WATER POTENTIAL OF POTATO TUBER CELLS. Method. Five sucrose solutions with varying molarity and one control containing distilled water were prepared and poured into test tubes. The potato discs were dried‚ weighed and added to the test tubes. The discs were then weighed again after a period of 24 hours. The percentage change in mass was then calculated. Apparatus.  Specimen tubes with stoppers x6  1cm3 diameter cork borer  razor
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Disaccharides Sucrose A crystalline disaccharide of fructose and glucose‚ C12H22O11‚ found in many plants but extracted as ordinary sugar mainly from sugarcane and sugar beets‚ widely used as a sweetener or preservative and in the manufacture of plastics and soaps‚ also called saccharose. Sucrose is one of the main products of photosynthesis and the most common transport sugar in plants. It is also a no reducing disaccharide‚ and is synthesized in the cytosol via the phosphorylated intermediate
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Experiment In this experiment we estimated the osmolarity of potato tuber tissue by submersing different potato cores into sucrose solutions of 0.0-0.6M‚ and weighing the potato. We concluded that the osmolarity of the potato was about 0.4M since the weight of the potato did not change after it was incubated in the solution with 0.4M. We also found that the potato was hypertonic to sucrose solutions of 0.0-0.3M and hypotonic to 0.5-0.6M. C. Dialysis Tubing Experiment We tested the permeability of
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Final Study Guide-PSIO 36 questions Unit 1 1. Vena cava--right atrium--tricuspid valve--right ventricle--pulmonary valve--pulmonary artery--pulmonary vein--left atrium--bicuspid valve--left ventricle--aortic valve--aorta 2. SA node--AV node--AV bundle--right and left bundle branches--conducting myofibers (purkinje fibers) a. pacemaker cells in SA node spontaneously discharge action potentials at a rate of 100-120+ per minute *AP process: 1. depolarization due to na inflow when voltage gated
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