Labs and Diagnostics Colonoscopy This test allows direct visualization of the small bowel‚ rectum‚ and colon. It is recommended for patients who have experienced fecal occult blood or obvious blood in the stool. It is also recommended for patients who have experienced a change in bowel habits or are experiencing abdominal pain. In patients who have had colorectal cancer‚ polyposis‚ or inflammatory bowel disease it is used to observe for continued progression of their condition. During the procedure
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stomata per unit area of a leaf. The experiment conducted with leaves along a water source and away from a water source was to analyze the stomatal density difference. This experiment was performed to measure which environment had a greater effect on stomatal density. Stomata of a leaf is a miniature pore in the epidermis of a leaf surrounded by guard cells that have a slit which allow movement of gases in and out of the leaf. With stomata‚ when it opens carbon dioxide enters a leaf while water and dioxide
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Enzyme Lab Report Introduction: Enzymes are proteins that enable chemical reactions. In the enzyme lab‚ the effects of concentration‚ temperature and pH on the functionality of the enzyme catalase. The enzyme lab was also about measuring reactions by capturing the oxygen that was generated by the reaction. Materials and Methods: Experiment 1‚ 2‚ & 3 Experiment 1 examined the effects of concentration on catalase activity. Experiment 2 examined the effects of concentration in temperature
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Formal Scientific Lab Report Osmosis Katy Hunter 10-26-2012 Abstract: The objectives of this lab was to be able to create models of cells with the dialysis tubing to show us how the plasma membrane is selectively permeable‚ to study the effects of osmosis on a model cell‚ and to foresee the effect of solute concentration on osmosis. In order to achieve these objectives‚ we had to fill the dialysis tubing with either water‚ or different amounts of sucrose. We then tied off the tubes and put
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carbohydrates‚ this process is referred to as carbon fixation (Hoefnagels‚ 2012‚ p.98). In 2011‚ drawing inspiration from the light reactions of photosynthesis‚ Dr. Nocera developed the “artificial leaf”‚ a silicon coated sheet that is about the size of a playing card. When placed in water and exposed to sunlight the leaf splits water into hydrogen gas and oxygen gas‚ the gas can then be collected and used as fuel. Dr. Nocera’s process of “artificial photosynthesis” can more precisely be defined as solar-powered
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Acknowledgements I would like to express my heartfelt thanks to Mr. Qi Liang‚ my supervisor‚ not only for his illuminating instructions and invaluable suggestions to the completion of this paper‚ but more importantly‚ for his rigorous scholarship and professional conscientiousness. I am also indebted to all my teachers in USTS‚ whose wonderful lectures on different subjects pave me the way for the fundamental and essential academic competence. I owe my sincere gratitude to my classmates and friends
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Lab Report Microbiology Introduction Bacteria can be found almost anywhere. For human life‚ some help us‚ some hurt us‚ and others are neutral. It is now known that good bacteria‚ or normal microflora‚ can reach 1014 microbial cells. This is far more than the 1013 cells that make up the human body (Tannock‚ 1995). The total number of bacteria on Earth is estimated to be around 4-6 x 1030 (Horner-Devine‚ 2004). It is important to know the extent of bacteria‚ how they live‚ and how they are
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concentration because of how quickly it was detected. See Table 1. In the second experiment‚ the original pH of the alkaline phenol red was 4.0. After adding CO2 by exhaling‚ the color changed from a deep red to a bright red. The pH of the solution also changed; it changed to a 6.0 so it became more neutral by adding CO2 which is more basic then the alkaline phenol red. See Table 2.
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particles by millions of water molecule. This movement will continue indefinitely as long as there is water. My prediction for this lab is the solution of the water is hypertonic meaning there is a higher concentration of solutes outside of the cell. To test my prediction my lab partners conducted the Brownian movement. Materials: Bon Ami scouring powder‚ carmine red and Indian ink Microscope slides and cover slip Dropper bottles with distilled water Spatulas
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them to the appropriate position. Perform the same process by changing the degree of the objective lens and focus to be able to see the grid clearly. Using Egeria densa‚ cut a leaf using a scissor and place it onto the slide glass using a forcep and using the droppers drop some water and place coverslip on top of the leaf by sliding the coverslip when placing on top to prevent air which produces bubbles. Place the slide glass on the stage‚ by moving the stage clip and move the coarse adjustment
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