Introduction Purpose: The purpose of the study was to determine the quality of the Ottawa River and identifying any human activities that may affect water quality by sampling for benthic invertebrates‚ measuring the water temperature‚ testing for pH‚ turbidity‚ dissolved oxygen‚ examining the odour‚ colour‚ and appearance of the water‚ the amount of grasses‚ shrubs‚ trees‚ and known uses of the waterway. Description: Various human activities that may affect water quality include municipal
Premium Water pollution Water Wastewater
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
Premium Nutrition Food Genetically modified organism
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
Premium Atmosphere Atmospheric pressure Earth
CH4 Prokaryotic Cells No nucleus Plasma membrane Selective permeability lets molecules pass. Enzymes for ATP production. Photosynthetic pigment on folding (on chromatophores or thylakoids). Leakage occurs if damaged by alcohols‚ ammonium‚ and polymyxin antibiotics. Phospholipid bilayer‚ peripheral proteins‚ integral protein‚ transmembrane protein‚ sterols‚ glycocalyx Movement across Membranes Simple diffusion: Movement of solute from high concentration to low Facilitative diffusion: Solute
Premium Metabolism Bacteria Protein
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
Premium Philippines Candida albicans Candidiasis
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
Premium Bacteria Yeast Agar plate
ISOLATION AND SCREENING EXTRACTED FROM GOTU KOLA (Centella asiatica) ROOTS EXTRACT Submitted by: ALIANA CLARENCE B. JAMERO IV – REG A Research Paper Presented to the Faculty of Gusa Regional Science High School Region X In Partial fulfilment of the requirements For Research 2 Submitted to: ERMA S. DAPIN Adviser March 2014 APPROVAL SHEET The research paper hereto attached‚ entitled; “ISOLATION AND SCREENING EXTRACTED FROM GOTU KOLA (Centella asiatica) ROOTS EXTRACT”
Premium Bacteria Bacillus Escherichia coli
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
Premium Bacteria Microbiology Escherichia coli
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
Free In vitro fertilisation Pregnancy
reaction? Materials • Raw liver • Forceps • Petri dish • Labeling tape and pen • Dropper pipette • Ice bath • 0.1% hydrogen peroxide solution • 3 thermometers • Liver puree • Warm-water bath • 25-mL graduated cylinder • Clock or watch with second hand • 5 50-mL beakers • Paper towels • Filter-paper disks Part A: Observe the Catalase Reaction 1. Put on apron and safety goggles. Use forceps to place a small piece of raw liver in an open petri dish. Use a dropper pipette to put a drop of
Premium Enzyme Catalase Catalysis