Introduction Competition is an important interaction that occurs between living organisms that co-exist in an environment. All living organisms need certain resources in order to survive and reproduce. These resources include but are not limited to nutrients‚ food‚ water‚ and a space to live in. When these resources become limited in a shared area‚ organisms are forced to compete with each other for the resources that they need. This competition can occur among individuals belonging to the same
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Most inventors strive for days‚weeks‚ monthes or years to invent their invention‚ for example Thomas Edison failed thousands of times before he successfully invented the lightbulb. But sometimes brilliance strikes by accident. Some of the most popular products we use today were accidents stumbled on by scientists not being careful. Young chemist William Perkin at first wanted to find a cure for malaria‚ but instead he accidently started a new movement in the fashion industry. In 1856 Perkin was
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The results of the experiment was very surprising‚ as the science behind it didn’t add up to the results that were shown on the petri dishes. Here are the colony counts of each of the locations that the dish was placed in. Incubator = 27 Control = 124 Freezer = 0 Window seal = 1 Dark box = 215 The independent variable here is the temperature of where the dished were placed meaning they could grow quicker. For the Incubator‚ you can see that the count of colonies was very small compared to some others
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SECTION - A 1. Name the technique to separate [1] (a) Salt from Sea – water (b) Butter from curd 2. Define velocity. [1] 3. What do you mean by free fall? [1] 4. Mention any 2 advantages of using Italian bee variety in honey production. OR (a) Identify soluble and solvent in the following solutions: [3] (i) Aerated drinks (ii) Tincture of iodine (iii) Lemon water (b) State the principle of each if the following methods of separation of mixtures
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Instruments The researchers will use Candida albicans that they will buy from University of the Philippines Los Baños (UPLB). The fungus‚ then‚ will be divided into three setups: Set A‚ Set B‚ and Set C. Each set will contain Candida albicans placed in a Petri dish. These sets will be given different amounts of the Pineapple skin’s soap extract; Set A will be given 40%‚ Set B will be given 70% and Set C will be given 90% of the soap extract. The researchers will also use microscope which will be borrowed from
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method of obtaining a pure culture is the streak-plate method on agar. The streak-plate method is an example of a solid dilution technique. Bacteria are obtained from a mixed culture with a sterile loop or wire and diluted within three sectors on a petri dish containing appropriate growth medium. After incubation‚ as a result of this dilution technique‚ individual colonies of microbes can be obtained. Each individual colony represents
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INTRODUCTION Microorganisms such as bacteria‚ fungus‚ mold‚ and yeast are present and common in almost every environment on earth. The normally microscopic organisms can easily be seen using differing types of agar‚ which creates an ideal environment for the organisms to form colonies‚ which are groups of hundreds of organisms that can be seen with the naked eye. In order to see individual microorganisms‚ it is necessary to use the magnification of a high-powered microscope. These techniques
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thoroughly in each of the concentration and air dried. Moist filter paper discs were placed in glass Petri plates (9 cm diameter) on which a single treated leaf disc was kept (for no-choice method). In choice method‚ in each Petri dish‚ along with a treated leaf disc‚ one untreated leaf disc of same size was kept. Single pre-starved (3-4 hours)‚ 7-day old larvae of S. litura was released into each Petri plate. Ten replicates were kept for each concentration. Leaf discs treated with solvent emulsified
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Bitoon Seeds Extract (Barringtonia asiatica) as Potential Antibacterial Agent An Investigatory Project Submitted As Entry to the 2010 Regional Science Fair Jorge Andrew C. Bagaipo Jessa Mae C. Macana Loriel Mari E. Berte Researchers Ma. Edylyn L. Noguerra Adviser ABSTRACT The study entitles “Bitoon seeds Extract (Barringtonia asiatica) as Potential Antibacterial Agent aims that the antibacterial agent of the seeds and determines its inhibitory effect to the growth of
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Michelle Sauer In Vitro Fertilization Syllogisms: My arguments: Both adopted children and In vitro fertilization kids may not know their parents or family history Adoption is not looked down upon for this Therefore‚ in vitro fertilization should not be looked down upon either. Conception is a beautiful outcome of physical conjugal love. Conception by using the expensive and trying method of in vitro fertilization is also a great sign ___of love. So‚ both should be deemed valid sources
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