using red blood cells‚ potato strips and three unknown solutions (A‚ B‚ C). First three slides were prepared containing RBC’s and unknown solutions A‚ B and C. A control slide was prepared only using RBC’s. After observing each slide under the microscope it was determined that unknown solution A was hypertonic because the RBC appeared to have shrunk. The RBC in unknown solution B appeared to be swollen‚ therefor‚ the tonicity of unknown solution B was hypotonic. Unknown solution C showed no change
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Animal and Plant Cell Comparison Lab By: Hamiz Jamil Daniel Levin Justin Mackeigan Arash Kamali Science 8C1 Due Date: Thursday November‚ 20th Table of Contents 1. 2. 3. 4. 5. 6. 7. 8. Background Information……………………………...page 3 Purpose………………………………………………...page 3 Hypothesis……………………………………………..page 3 Materials………………………………………………..page 4 Procedure……………………………………………....page 45 Observation/Diagrams………………………………...page 57 Conclusion……………………………………………
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Links: the microscope to a computerized spectrophotometer. Characterizes trace quantities of evidence Such as paint‚ fibers‚ inks ▫ Scanning Electron Microscope: 3d image formed by aiming a beam of electrons onto a specimen‚ then the electron emissions are based on an image shown on the closed TV circuit. Use for gun shot reused
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2. Use low concentration of caffeine so not to harm the Daphnia. 3. Place the Daphnia in the presence of pond water instead of distilled water. 4. Use the same Daphnia throughout the whole experiment and handle it with care. 5. Turn off the microscope light between observations to
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Observing Bacteria Kelli Jo Simco Microbiology Due: 2/8/13 Abstract: Microscopes are fragile instruments that must be handle with extreme caution as they can produce high quality results when observing the smallest specimens on earth. A microscope must be properly cleaned before use and storage. The different objectives allow for a range of observations. At the highest objectives‚ the resolution can easily be lost which is why the oil immersion lens is used to minimize refraction. While
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Lynes) In the 1920’s‚ the maximum magnification of a research microscope was only 2‚000 to 2‚500 X‚ so he did what he’d been trained to do; he designed and built 5 new microscopes with a range of 5‚000 to 50‚000 X. Using his own instruments‚ he was the first person to photograph the heretofore invisible life forms that traveled in and out of view‚ alive and motile. He was known to sit for 48 hours at a time‚ peering into his microscope‚ bringing a specimen into sharp focus. (Nobody had observed what
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small pieces of filter paper 1 microscope access to 30% Na solution bottle tweezers Method: 1.A piece of
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human immunodeficiency virus c) Microbial ecologist -- studies bacteria that degrade oil d) Microbial physiologist – studies fermentation of sourdough bread e) Molecular biologist – studies recombinant DNA 2) You are observing a cell through a microscope and note that it has not apparent nucleus. You conclude that it most likely a) has a peptidoglycan cell wall b) has a cellulose cell wall c) moves by pseudopods d) is part of a
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as well as‚ Nitrate‚ and Nitrite. There was also two views of microscope observations. This report will explain and go into detail regarding the results of the observation of the pond water. INTRODUCTION: MATERIALS: Water 9. Slide covers Soil/Grass 10. Plant mobile with grow lights Jar 11. I.D. Books Microscope 12. Nail Thermometer
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then a solution of 0.9% NaCl was added. The cover slip was placed on the slide and was put under the microscope. After looking under the microscope‚ the cells were shown no different compared to the first slide. Third slide‚ the blood was placed on a slide then a solution of 10% NaCl was added. The cover slip was placed on the slide and was put under the microscope. After looking under the microscope‚ the cells were shown to look shriveled compared to the second slide. On the last slide‚ the blood
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