solidify at room temperature. After an hour‚ the dishes were placed in a refrigerator at three degrees Celsius. If there was visible condensation on the agar plate‚ they were flipped to avoid the contact of heat that drove the moisture out of the agar dishes. The contents of the broth culture of E. coli was gently swirled
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active dried yeasts (ADY). This experiment allowed the students to perform the plate count technique by serial dilution and two common methods‚ spread plate and pour plate to determine the colony forming unit (CFU) of yeasts A ten-fold dilution is used in this experiment‚ the sample is diluted until it reached the 10-9 dilution. Plating for spread plate started from 10-5‚ 10-6‚ 10-7 and 10-8 dilution while for pour plate‚ it started from 10-6‚ 10-7‚ 10-8 and 10-9 dilution. Having incubated inverted
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Course Syllabus College of Natural Sciences GLG/150CA Version 1 Exploration of Earth Sciences Course Description This course focuses on the dynamic forces impacting Earth’s environment. It is a study of the major constructs in geology‚ oceanography‚ meteorology‚ and astronomy collectively called Earth science. A scientific approach will be used in orienting students to develop an understanding of the interconnectivity of each of these sciences. Policies Faculty and students/learners
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Aseptic Technique and Streak Plates Purpose The purpose of this exercise is to learn aseptic technique procedures and there importance and also to learn to isolate colonies using the streak plate technique. Introduction Bacteria are inoculated (introduced) and cultured (grown) in the laboratory for test studies to determine their morphology (the shape‚ size‚ arrangement‚ and internal structures) and pathology (ability to cause disease). Inoculation has to be performed without adding other microbes
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yeast and mold in a sample. It counts the number of colonies produced by a very dilute suspension of bacteria on an agar plate and to observe the differential staining behaviour of the living bacteria. This involves counting the colonies produced by viable cells under favourable growth conditions. Some techniques needed before the viable count‚ like pour plate method‚ spread plate method and most probable number method. The viable count is very specidic‚ as it represents the number of colony forming
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able to penetrate our atmosphere and cause immense damage (Goulding). The damage a large meteor would cause would be catastrophic. Several ramifications that probably dont come readily to mind are the effects on the human body‚ thermodynamics and plate tectonics. Without friction‚ many functions of the human body would not work. Procreation would be impossible as friction is necessary for the male orgasm. Digestion would be impossible as the human body uses friction to digest and move food throughout
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Identification and Starter Culture Activity of Lactoccocus lactis MATERIAL & METHODS MATERIAL: Apparatus: 1. Capped test tubes 2. Test tubes holder stand 3. Beakers 4. Microscope 5. Incubator 6. Platinum loop 7. Microtitre plate 8. Durham tubes 9. Conical Flask 10. Measuring cylinder 11. China dish 12. Funnel 13. Spatula 14. Weighing balance 15. Autoclave 16. Aluminium foil 17. Petri dishes with lids 18. pH meter 19. Burner
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set of natural processes that lead to the formation and transformation of igneous‚ sedimentary‚ and metamorphic rocks. The rock cycle shows that each type of rock can change in a certain way to form another. The driving force of the rock cycle is plate tectonics. The transition to igneous is when rocks are pushed deep under the earth’s surface and may melt into magma‚ if there is no condition for the magma to stay in a liquid state‚ it will cool and solidify into an igneous rock. The three main
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circulation. This is called plate tectonics. 4. The origin of earth’s magnetic field is a result of molten metal in the outer core that circulates around the inner core like a giant dynamo. Magnetism of the lithosphere supports the model of plate tectonics through the development of new oceanic crust that formed volcanism at the ridge crest in the prevailing polarity. This new crust was split apart and then moved in opposite directions. This explains new lithosphere at mid oceanic plate margins. 5. Gravity
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Blood agar plate‚ MSA plate‚ MAC plate‚ and the EMB plate. Before that we had done the 3 phase isolate which we had a possible of 10 points of achieving. In the isolation plate we had too take the sample of our unknown‚ which was the letter G. After we had done the 3-phase isolation plate we inoculated half of the plate‚ which was the S/D media. The Plate’s that we had provided too us were the BAP‚ MSA‚ MAC‚ and EMB. When we were successfully inoculated the S/D media the plates were put in
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