Biology
11 Sep 2017 A. Experiment to understand action of saliva on flour. Aim : To demonstrate the Apparatus : Test tubes (2), flour, watch glass, dilute tincture iodine, saliva (1 teaspoonful) Procedure: result: The enzyme amylase in the saliva breaks down the starch molecules into smaller subunits usually into sugars.
9 Feb 2014 As exams approach all Class 12th students are most likely busy in exam preparations, but have you studied for your practical exams? Here are study tips for an essential part of the CBSE final examinations, the 30 marks worth practical exam.
Effect of Different Temperatures on the Activity of Salivary Amylase on Starch. Materials Required. Three series of test tubes having iodine solution in each, test tubes, ice cubes, water, 15 ml 1% starch solution + 3 ml 1% NaCl, saliva solution, droppers, thermometer, Bunsen burner and wire gauze.
16 Feb 2017
27 Mar 2013 Salivary amylase is an enzyme produced by the salivary glands in the mouth. The salivary amylase is also known as Ptyalin. It helps to breakdown the complex starch into simple sugars like maltose in the mouth. It is a enzyme present in the Saliva secreted by the Salivary glands . this enzyme changes the
16 Jan 2015 Department of Chemistry Kendriya Vidyalaya Khagaria C E R T I F I C A T E The investigatory project entitled “To Studythe digestion of starch by salivary amylase and effectof temperature and pH on it" Submitted by SHAHBAN ALI of Class XII Science for the C.B.S.E Senior Secondary Examination class XII
2. Notes. Biology Practical. 4. What you should know : It highlights the concepts and background knowledge relating to the experiment, which should be known to you in order to perform the experiment in a meaningful manner. 5. Materials required: Listed various materials, apparatus etc. required to carry out the exercise. 6.
If chewing is continued for lengthy periods of time these changes will occur in the mouth under the influence of salivary amylase. Otherwise place the test tubes in the following manner: * Place test tube number one on the table (at 250C) * Place test tube number two in the fridge (at 50C) * Place test tube number three in
8. Dissect, display and identify an ox's or a sheep's heart. Laboratory Activities. (Each conducted during one double class period). Students should: 9. Conduct a qualitative test for: starch, fat, a reducing sugar, a protein. 10. Investigate the effect of pH on the rate of one of the following: amylase, pepsin or catalase activity. 11.

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February 2018