SIJIL TINGGI PERSEKOLAHAN MALAYSIA (STPM) (MALAYSIA HIGHER SCHOOL CERTIFICATE) Student’s Manual Practical Biology Paper 964/3 (School-based Assessment) 2010/2011 Session Majlis Peperiksaan Malaysia Bangunan MPM‚ Persiaran 1 Bandar Baru Selayang 68100 BATU CAVES Selangor Tel: 03-6136 9663 Fax: 03-6136 7329 © Majlis Peperiksaan Malaysia 2010 CONTENTS page 1.0 2.0 3.0 Experiment 1 Experiment 2 Experiment 3 Experiment 4 Experiment 5 Experiment 6 Experiment 7 Experiment 8 Experiment 9 Experiment
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solution (distilled water‚ 0.2 M sucrose‚ 0.4 M sucrose‚ 0.6 M sucrose‚ 0.8 M sucrose‚ and 1.0 M sucrose) into separate bags. Tie the other end of the bag‚ leaving sufficient space for expansion. Record the initial mass for each bag in grams. Then‚ fill the cups with distilled water. Place each bag in one cup and label each cup with each solution. After 30 minutes‚ remove the bags from the water. Finally‚ record each bag
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overnight. After time is up‚ remove the cores from the sucrose solutions and mass them. Record all data in its appropriate table. Lab 1D - Using the paper‚ pencil‚ and calculator collected‚ determine solute potentials of the solutions and answer the questions asked to better understand this particular part of the lab. Lab 1E - Using the materials gathers‚ prepare a wet mount slide of the epidermis of an onion. Draw what you see of the onion cell under the microscope. Add several drops of the NaCl
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research article written by the researchers Jiangjiang Liu‚ He Wang‚ R. Graham Cooks‚ and Zheng Ouyang at Purdue University demonstrated that Leaf Spray is a superior method of mass spectrometry for the determination of the chemical constituents of plant tissue. I became interested in this research article while I was working on my own laboratory research that seemed to parallel many of the same work the Purdue researchers were performing‚ but of course with a higher degree of expertise and technological
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starch. For this lab the following materials were needed to complete the experiments in test 1 for proteins: Di water‚ ev milk‚ 50% egg solution‚ 1% sucrose‚ 4 test tubes‚ 1 test tube rate‚ safety glasses‚ pipets and the reagent solution. For test 2 for starches the following materials were used: Di water‚ 1% starch solution‚ onion juice‚ sucrose solution‚ iodine reagent‚ 4 test tubes‚ test tube rack and pipets. In test 1 and test 2 each solution was placed in a separate test tube with the corresponding
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Carbohydrates‚ Proteins‚ lipids‚ and nucleic Acid Lab Exercise 6 Date: 9/17/12 Bio 102-11 Purpose the purpose of this experiment was to perform test to detect the presence of carbohydrates‚ proteins‚ lipids‚ and nucleic acids. Explain the importance of a positive and a negative control in biochemical test. Use biochemical test to identify an unknown compound. Background Most organic compounds in living organisms are carbohydrates‚ proteins‚ lipids‚ and nucleic acids they are called macromolecules
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we added 5ml of a different solution to each test tube. After that‚ we added 3 drops of iodine to each solution. Finally‚ we jotted down the results and colors of each tube. The experimental group is 5mL of each of these solutions: onion juice‚ potato juice‚ sucrose‚ glucose‚ distilled water‚ reducing sugar‚ and starch. There is no control group because all the solutions are being experimented on. Iodine is the independent variable because you control how many drops of iodine are put in each solution
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carbohydrates are an important storage and transport form of energy in most organisms‚ including plants and animals. Carbohydrates are classified by their number of sugar units: monosaccharides (such as glucose and fructose)‚ disaccharides (such as sucrose and lactose)‚ and polysaccharides (such as starch‚ glycogen‚ and cellulose). B) Lipids Lipids are one class of aliphatic hydrocarbon-containing organic compounds essential for the structure and function of living cells. Lipids are characterized
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of Diffusion and Osmosis Table of Contents Lab # 1 Experiment Components Experiment Requirements Background Information Experiment Procedures Experiment Overview PART A. Diffusion and Dialysis PART B. Osmosis PART C. Water Potential PART D. Onion Cell Plasmolysis Study Questions Instructor ’s Guidelines Notes to the Instructor Pre-Lab Preparations Experiment Results and Analysis Study Questions and Answers Material Safety Data Sheets Page 3 3 4 10 11 12 16 20 21 23 24 26 29 31 Advanced
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= diffusion) - Male & female sex organs (gut can only accommodate 1 tapeworm) - Number of eggs produced (increase chance of survival) - Eggs have resistant shells (survive until eaten) Dormant embryos can form cysts in organs - damage surrounding tissue BY2 revision Page 1 Adaptions to different diets 21 May 2011 10:53 Reptiles & Amphibians = swallow food whole Mammals = cut up and chew (palate separates nasal cavity & mouth - kept in mouth longer) Carnivore = short gut (easily digest
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