_____________________ The Human Cheek Cell Microscope Lab Period: _____ Date: _________ Problem: What kind of tissue are you able to observe from your cheek sample? Objectives: To learn the parts of and how to use the microscope. To find specimens using low‚ medium‚ and high power. To make a wet mount slide. To view your own (or your partner’s) cheek cells under the microscope. To compare plant and animal cells. Procedure of Investigation 1. Add one drop of methylene blue to the
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My Life under the Microscope SOCS 185 The older I grow the more everything in my past seems to make sense in relation to the person I am today. The trials and tribulations my family and I experienced have shaped and become the definition of this thing called “life”. I’m pretty clear about whom I am as a person‚ but now that I know different sociological concepts and perspectives‚ I’m interested on how society views me as a person. I will attempt to explore the sociological concepts I’ve learned
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following parts of the microscope and describe the function of each A. Ocular Lens- the lens on the top of the microscope that look into with 10x or 15x power. B. Body Tube- Connects eye piece to the objective lens C. Revolving Nosepiece- holds two or more objectives lenses and can be rotated easily to change power D. Objective lenses- 4x‚ 10x‚ 40x‚ and 100x powers E. Stage- The flat plate where the slides are placed for observation F. Diaphragm- Generally a five hold disc placed under the stage. Used
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Running head: Tyco: A conglomerate under the microscope Tyco: A conglomerate under the microscope In 1960‚ Arthur Rosenburg founded Tyco when he opened a laboratory to do experimental work the United States government. It wasn’t until 1962‚ Rosenburg incorporated the business as Tyco Laboratories. The company’s focus was on energy conservation products and tech materials science for commercial use. In September 1964 Tyco went public and began its acquisition of other companies to enlarge
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How do solutions of various salt concentrations influence osmosis in relation to an onion cell? Materials: (per student group): red onion epidermis forceps‚ dropper distilled water NaCl solution paper towels microscope slide cover slip Procedure 1. Make a wet mount of the red onion epidermis. 2. Examine under low power. When you have a clear view of several cells‚ switch to high power. Make a labeled drawing (cell wall‚ membrane‚ cytosol) of your cells. This
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Observing Onion Cells Science 8 Observing Onion Cells ***Do not write anywhere on this piece of paper!!! It will be used again this afternoon!!!***** Instructions. On a piece of paper‚ write the title (see above)‚ the date‚ your block‚ and your name. Then copy out the problem (see below). Problem. What structures can you observe in an onion cell when using a compound light microscope? Hypothesis. On your lab report‚ below your Problem‚ write a Hypothesis that will
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1. Discuss 4 major types of cells that can be found in the skin. The 4 major types of cells that are found in the human body are keratinocytes‚ melanocytes‚ epidermal dendritic (Langerhans)‚ and the tactile (Merkel) cells. The keratinocytes‚ which are epithelia cells‚ are the most abundant cells in human body and dominate the epidermis. These cells contain keratin and work together to form layers known as thick skin‚ which consists of 5 layers‚ and thin skin‚ which consists of 4 layers. These cells
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Christine Otieno Estimating Osmolarity of plant Cells(potato and celery)by percentage change in weight Using different sucrose concentrations Introduction The purpose of this experiment was to estimate Osmolality of plants cells i.e. Potato and celery by converting the observed change of weight in different sucrose concentrations. The hypothesis assumes that the solute concentration of the plant samples would be indirectly proportional to the weight; there would be decrease
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carbon. Sugar contains sucrose which is the common saccharide in many plant parts. Sucrose (sugar) is composed of 12 carbon atoms‚ 22 hydrogen atoms and 11 oxygen atoms. Therefore‚ the chemical formula of compound sugar C12H22O11. Figure 1‚ shows the structure of sugar as a 3D diagram. Figure 2‚ is a demonstration of the structure of sugar in a 2D diagram. The molar mass of compound sugar is 342.2965g/mole with a density of 1.59g/cm3 and a melting point of about 186
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OBSERVING PLASMOLYSIS IN ONION CELLS (_ALLIUM CEPA_) I. INTRODUCTION Plasmolysis is the process in plant cells in which the cytoplasm is separated from the cell wall as a result of water loss through osmosis. Osmosis is a type of passive transport involving movement of water molecules across a partially permeable membrane. 1. RESEARCH QUESTION How does 15% NaCl solution affect the appearance of onion cells? 2. HYPOTHESIS If onion cells are submerged in solutions of NaCl of different concentrations
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