Hong Kong Diploma of Secondary Education Examination Integrated Science School-based Assessment Sample Tasks Teachers may use the sample tasks for non-profit making educational and research purposes with proper acknowledgement. © 2009 Hong Kong Examinations and Assessment Authority All Rights Reserved 2009 TABLE OF CONTENT Task C1 C2 C4 C5 C6 C7 C8 E3 Title Osmosis in Living Tissue Catalytic Activity of Enzyme Action of Electricity on Substances Encountered in Daily Life Do
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Seeds #Fruit Peelings #Basin #SOIL (Loam) #Strainer Procedure: -Gather all the fruit peelings. -In a round pot‚ combine all the peelings and pour water. -Let the water reach its boiling point until the peelings are soft and pale. -After boiling‚ slowly pour the extracted peelings into the strainer allowing the peelings separate from their extract. -After boiling‚ slowly pour the extracted peelings into the strainer allowing the peelings separate from their
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CHAPTER I: INTRODUCTION There are many dangerous chemical in our surroundings; most o them can be located inside our own homes‚ almost every household would contain cleaning liquids like liquid detergent‚ mildew removers‚ insecticides and many other harmful chemicals; that is the reason why we decided to focus this investigatory project on creating an eco- friendly cleaning solution. The problem of the modern world is that we have created far too much hazardous chemical since it does the daily
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DNA extraction in Watermelon and Bananas Abstract During this experiment the researcher investigated the differing amounts of DNA present in bananas and watermelon. So that the researcher could do this‚ and accurately record the amounts‚ the researcher liquefied the fruits in a blender‚ added water and salt to them‚ and the added laundry detergent before using contact solution as an enzyme. Rubbing alcohol was then poured into the mixture and the DNA was extracted and
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average mass of DNA with the mass of banana‚ strawberry and kiwi. Purpose: The purpose of this lab is to investigate the comparison between the amount of DNA per gram of fruit that can be extracted from a banana‚ strawberry and kiwi and to determine which one has more DNA. Hypothesis: The banana genome contains 837 MBPs and the strawberry genome contains 206 MBPs and the kiwi genome contains 128 MBPs. This states that there are more base pairs in a banana genome than the strawberry genome and
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example a banana or strawberries‚ exposing the substance to a sodium chloride (NaCl) solution‚ subjecting the product to detergent solution (dH2O)‚ filtering the solution and lastly‚ the addition of ethanol. When beginning with a solid substance‚ such as a banana‚ crushing the substance allows for breaking down the cell membrane and cell wall‚ if using a plant cell. This ultimately‚ removes the contents of the cell from the deoxyribonucleic acid (DNA) and further exposes it for the detergent solution
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Handmade Paper from Musa sapientum (banana) leaves ABSTRACT The main goal of this research is determine whether Musa Sapientum (banana) leaves can be another source of fiber for paper making by producing quality handmade paper out of Musa sapientum (banana) leaves. The banana leaves were gathered cut into small pieces and soaked in a basin full of water overnight. It underwent boiling in water‚ then in NaOH solution‚ and then lastly in soda ash solution to separate the cellulose fibers from the
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com/publications/EnvironMentors%20Program%20Final%20Paper%20-%20Lalaram.pdf Title: Zea Mays Peelings as Components in Paper Making Problems: 1. What makes Zea Mays peelings feasible in making handmade paper? 2. What are alternative simple procedures in making handmade paper? 3. Is it feasible for Zea Mays peelings to be used as an alternative component in making handmade paper? Hypotheses: 1. The thinness and dryness of the Zea Mays peelings make it possible to make handmade paper out of it 2. Alternative
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punishments we give to ourselves for breaking a norm‚ such as feeling guilty. The extremeness of the sanction correlates directly with what kind of norm was broken. I broke a very small and somewhat unusual norm by opening my banana peel at the opposite end. Most people open their bananas from the stem‚ but I open mine from the bottom. During dinner last
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|after exposure to bright light| || L.|NH3 and CuSO4|10 |light blue‚ cloudy| Part F: Testing of Various Foods with the NaOCl + KI solution Foods|Presence or Absence of Starch| bread|present| tortilla chip|present| broccoli|absent| banana|present| cheerios|present| cheese|absent| potato|present| Part 2: Household Chemicals with Bromthymol Blue Use the empty pipet in the Auxiliary Supplies Bag to test several (at least 3) household items including household cleaning
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