INSTRUCTIONAL OBJECTIVES 1. Define Ocular: (eyepiece) Objective: provides magnification of 4‚ 10‚ 40‚ and 100 power Low power: 4X 10X High-and-dry: 40X Oil immersion objective: 100X Fine adjustment: is essential for final‚ sharp focusing Coarse adjustment: is used initially for rough focusing Parfocal: as you cane from one objective to another you will find that your microscope is very close to a final focus Sub stage condenser: light focusing lens Iris diaphragm: used to regulate the
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Microscope lab report Introduction Microscope is a tool used to enlarge images of small objects that are hard to study with bare eyes. The compound light microscope‚ which is going to be used in this lab activity‚ is an instrument with two lenses and various knobs to focus the image. In this lab‚ we will learn about the proper use and handling of the microscope. Objectives: •Demonstrate the appropriate procedures used while using the compound light microscope correctly. •Make and use a wet mount
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Layers of the skin The skin is an ever-changing organ that contains many specialized cells and structures. The skin functions as a protective barrier that interfaces with a sometimes-hostile environment. It is also very involved in maintaining the proper temperature for the body to function well. It gathers sensory information from the environment‚ and plays an active role in the immune system protecting us from disease. Understanding how the skin can function in these many ways starts with understanding
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Extraction of DNA from an Onion Molecular biologists and biochemists are involved with research in finding out as much as possible about the DNA in plants. DNA was discovered in the 1950’s‚ there still remains a lot to be known about it‚ especially how it is used to determine the physical traits that we all have‚ and how it regulates the workings of the body. deoxyribonucleic acid is a chemical‚ we can do reactions with it just like we can work with any other chemical. Experiment: Note:
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the first microscope the use of glass and water as a form of magnification was not very effective as man could not see bacteria‚ yeast‚ blood cells or any animal swimming in drops of water from the naked eye. Around the 1600 Hans and Zacharias‚ two spectacle- markers assembled the first compound light microscope. The compound light microscope was made up of 2 lenses inside a tube which enlarged objects 9X. As the microscope model was advanced by Robert Hooke he later discovered cells. Over time
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impact in this excitement a little on osmosis. Osmosis takes place when two solutions of different concentrations are separated by a semi-permeable membrane in which the solvent can pass through but not the solute. In our experiment‚ we used a sucrose solution that will be a hypotonic concentration of solute. This tells us that the solution has a lower concentration of water than does the cells. Therefore‚ due to osmosis‚ the cells will gain water weight also proven in the experiment given. If osmosis
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Compound Light Microscope Commonly binocular (two eyepieces)‚ the compound light microscope‚ combines the power of lenses and light to enlarge the subject being viewed. Typically‚ the eyepiece itself allows for 10X or 15X magnification and when combined with the three or four objective lenses‚ which can be rotated into the field of view‚ produce higher magnification to a maximum of around 1000X generally. The compound light microscope is popular among botanists for studying plant cells‚ in biology
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Indra Nooyi on the screen (go here to download one) and describe the challenge Ms. Nooyi has ahead of her. As of October‚ 2007‚ she seems to be moving the company in the right direction - PepsiCo stock is up over 10% under her leadership. ( CONCLUDING CASE - WILD WATER GETS SOAKED Case Summary: This case reveals how important it is to organizations of all sizes to be prepared and ready to implement changes in business scope and even product mix in order
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Child’s Name Peter Age 4 Observation (Developmental Area) Physical/Motor (fine/gross) Date March 2‚ 2015 Time of day 8:15 am Child was independently sitting alone at a table playing with play dough. Child utilized both of his hands to open the jar and to roll the clay substance on a mat. He was able to utilize different tools‚ such as‚ a rolling pin and plastic spoons and knives to create different molds of the clay. Child appeared to be distracted by his peers‚ evidenced by his eye movement towards
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giga- G 109 mega- M 106 kilo- k 103 deci- d 10-1 centi- c 10-2 milli- m 10-3 micro- u 10-6 nano- n 10-9 pico- p 10-12 femto- f 10-15 atto- a 10-18 B. The mole and millimole 1. Mole – amount of a chemical species. Avogadro’s number 6.022 X 1023 of particles. 2. Millimole – 1mmol = 10-3 mol 3. Molar mass – mass in grams of one mole of a substance. Example 3-5 page 76 4.62 g Na3PO4 Molar Mass Na3PO4 = (22.9898 gNa X 3) + (30.9738 gP) + (15.9994
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