the conclusion that the catecholase is clearly seen as the catalyst and needed for the reaction to undergo at a faster rate‚ but it was also seen that reaction occurred in the tube with only the enzyme solution because there were small amounts of catechol already present. This means that we needed two sets of test tubes for each variable and we also needed to subtract the tube with the enzyme solution from the tube testing the variable in order to get accurate
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inserted into the spectrophotometer and measured with the 420 nm wavelength. This procedure was repeated for the remaining test tubes. Exercise B required 4 test tubes labeled with “A‚B‚C‚ or D” and they held the solution of different pH buffer and potato juice volumes‚ and 1 mL of water (Table 4). These tubes were the blanks for the spectrophotometer for recalibrating it. The additional 4 experimental test tubes were composed of the same contents but 1 mL of the substrate catechol was added instead
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CHEMISTRY PROJECT :AIM: TO COMPARE RATE OF FERMENTATION OF GIVEN SAMPLE OF WHEAT FLOUR‚GRAM FLOUR‚RICE FLOUR AND POTATO. SUBMITTED BY :- NAME: Shreyas kelkar CLASS:XII A ROLL NO: 26 INDEX # AIM # CERTIFICATE # ACKNOWLEDGEMENT # DECLARATION # OBJECTIVE # INTRODUCTION # MATERIALS REQUIRED # PROCEDURE # OBSERVATIONS # BIBLIOGRAPHY CERTIFICATE This is to certify that this project is submitted by SHREYAS KELKAR to the chemistry department‚ KENDRIYA VIDYALAYA NO. 1‚ INDORE was carried out
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Chemistry project Aim: To compare rate of fermentation of given sample of wheat flour‚ gram flour‚ rice and potatoes. Submitted By: Name: Ipshita Chatterjee Class: XII – A Roll No.: 12 Index: S.no | | Page no. | 1. | Certificate | | 2. | Acknowledgement | | 3. | Declaration | | 4. | Objective | | 5. | Introduction | | 6. | Requirements | | 7. | Procedure | | 8. | Observations | | 9. | Bibliography | | Objective: In this experiment the main objective is to
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[Osmosis Practical Report] Abstract: | The purpose of this investigation is to see if the concentration of Sodium chloride (NaCl) solution will affect the mass of the potato cylinder hence the rate of osmosis. This can be done by placing 5‚ identical in length (3cm) but different in weight‚ tubes of potato in 5 different beakers. Each containing an altered NaCl concentration. The concentrations used in this experiment were‚ 0%‚ 2%‚ 10%‚ 15%‚ and 26%. Potatoes were weighed prior to immersion
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Report 2 Investigating the phenomenon of Osmosis in plant tissues: Potato in different concentrations of NaCl Tutor: Maria Tsaousidou By Marina Gkritzioudi Biology Lab Report 2 Investigating the phenomenon of Osmosis in plant tissues: Potato in different concentrations of NaCl Tutor: Maria Tsaousidou By Marina Gkritzioudi Investigating the phenomenon of Osmosis in plant tissues: Potato in different concentrations of NaCl Introduction: Osmosis is the movement of water molecules through
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Potato Osmosis Biology SL - ATh INVESTIGATION “Potato Osmosis” INTRODUCTION Osmosis is a process that occurs at a cellular level that entails the spontaneous net movement of water through a semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water in each region. Involved in this process are hypotonic‚ hypertonic and isotonic solutions. A hypotonic solution is one with a lower osmotic pressure‚ indicating
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the same for potato cores placed in varying concentrations of solutes of NaCl‚ glucose‚ and sucrose. This experiment was designed to test these predictions and compare them to data gathered course wide. We found that the mean water potentials were all within 0.26 bars of each other‚ and that the zero weight change osmolalities were all within 0.035 mols of each other. This supported Van’t Hoff’s predictions that water potentials and osmolalities would be the same. We had to collect potato core samples
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Biology Experiment 2 : Transport Across Membrane Name : Umi Adiba Anis Binti Che Hamid Matrix Number : CPM0147_2013B Batch : Pre-Med May Intake 2013 Group : E Date : 19.06.2013 Lecturer’s Name : Miss Nurul Izziani Objectives : I. To study the effects of hypotonic‚ hypertonic‚ and isotonic solutions on plant and animal cells. Experiment 1 : Introduction : The purpose of doing this experiment is to investigate the effects of hypotonic‚ hypertonic‚ and isotonic solutions on plant
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Stirring rod * Small knife * Glass slide and cover * 250‚ 500 ml beakers * Distilled water * Cotton * Test tubes * Spatula * Onion * Ethanol (70%) * Filter paper * Table sugar (sucrose) * Table salt (NaCl) * Potato EXPERIMENT 1 PART 1 Procedure: 1. The epidermal layer of an onion is scaled off carefully and placed on a drop of distilled water on the glass slide; 2. The glass slide is slowly lowered down on the epidermal layer using the needle;
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