Use a pin to carefully lower the cover slip over the slide‚ ensure there are no air bubbles before the use of the slide. Set the microscope to its lowest power objective lens (x4) and make sure it is in line with the optical tube‚ also that the microscope light is turned on. After preparation of the slide and microscope‚ carefully place the slide onto the microscope stand. Looking from eye-level of the stand‚ lower the tube using the coarse focus know until the end of the objective lens is just
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will be to show that different cells have different structures and textures. Hypothesis I believe that viewing these different cell types under the microscope will show more detail and variations between the cells. Method Apparatus All apparatus was collected and setup as shown in the table below. CHEEK CELL ONION CELL Microscope Microscope Slide Slide Methylene Blue Iodine Spatula Microscopic Cover Slip Microscopic Cover Slip Forceps Forceps Tile Tile Cheek Cell *A sample was
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Smear: Before preparing a wet mount slide‚ the microscope was calibrated. The objectives and oculars used for the calibration procedure were used for all measurements on the microscope. The calibration factors should always be posted on the side of the microscope. Using a wet mount identification technique‚ protozoan trophozoites‚ cysts‚ oocysts‚ and helminthes eggs and larvae may be seen and identified. In preparing a wet mount‚ a clean microscope slide and the stool specimen were obtained. Then
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7/22/2014 3.01 Cell Cycle Lab Report [ print page ] 3.01 Cell Cycle Lab Report Safety Notes: Always handle microscopes and glass slides carefully. Wash your hands after handling the prepared specimens. Materials: Compound light microscope Glass microscope slide with prepared onion root tip specimen Purpose: understand and identify the stages of the cell cycle and mitosis. apply an analytical technique to estimate the relative length of each stage of the cell cycle. Hypothesis:
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AS Level Physics: Terms & Definitions:- Measurement Random errors are errors of measurements that result in a scatter of readings about a mean value. Systematic errors are errors of measurement which occur according to some fixed patterns such that they consistently give out an over-estimation or under-estimation of the true value. Accuracy is a measure of how close the results of an experiment agree with the true value. Precision is a measure of how close the results of an experiment
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surrounding. To see them in an unstained state and also to observe their motility‚ a hanging-drop or a wet mount technique is used. A wet mount is the technique of placing small amounts of specimen in a droplet of water for viewing with the compound microscope. Motility is an inheritable phenotype and is critical for identification and classification of bacteria. The technique is done by applying petroleum jelly to all sides of a cover glass. Add a water droplet and specimen using an aseptic loop onto
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Microscope Practice Quiz /LE Lab Instructor: Mr. Buckley Name _______________________ Choose the answer which best completes the following statement or answers the following question. Base your answers to questions 1 through 5 on the diagram of a microscope below and on your knowledge of biology. Place the letter(s) corresponding to your answer in the appropriate blank on your student answer sheet. 1. Which part of the microscope would you adjust to regulate the amount of light reaching
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1. Determine the Number of valence electrons in the Lewis Structure: One of the easiest ways to start drawing a Lewis Structure is to make a list of each atom in the structure and next to each atom record how many valence electrons it has and how many it needs to fill its valence shell. In covalent bonding the valence electrons in the molecule come from the valence electrons in the atoms that formed the bond. a. The number of valence electrons in any main group atom is equal to its
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bonds are formed when atoms share electrons‚ one from each atom in a single bond‚ to form electron pairs‚ usually making their outermost shells up to eight electrons by this means. This would make them more stable‚ less reactive and an electronic structure like a noble gas. They are most frequently formed between pairs of non-metallic elements. Non-metallic elements usually have from four to eight electrons in their outermost shells‚ the so-called valency electrons‚ which are used for chemical bonding
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MICROBIAL SURVEY‚ SMEAR PREPARATION‚ AND SIMPLE STAIN Instructional Objectives 1. Define Roccal = green‚ liquid disinfectant. Pathogen = an agent which causes disease. Wet Mount Slide = a microscope slide of a liquid specimen covered with a cover glass. Yeast = a single celled fungi. Budding = a true characteristic method of asexual reproduction among yeasts where budding of a new cell from a parent cell can be observed. Mold = multicellular masses of filamentous fungal growth. Hyphae
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