Session #1 Lab 1 OBSERVING BACTERIA AND BLOOD D Haynes BIO-218A Microbiology Lab Friday‚ January 17‚ 5:00pm Objective(s): Our objective is to gain knowledge of the functions and operations of the microscope through observation of bacteria and blood slides that are available for this assignment. We are also learning to “see” and observe various bacteria and their shapes as well as live yogurt cultures‚ blood‚ plaque and cheek swab samples and their arrangements. We
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classified as Class 1 by US Public Health Service/Biosafety Level 2 Review everything about the microscope and our original laboratory EXERCISE 1: USE AND CARE OF MICROSCOPE: (Covered 9.4.14 II Week 1) THE MICROSCOPE: Simple microscope early microscope; like a magnifying glass Brightfield compound microscope Most often used Base Bottom of microscope Stage Holds slide Arm Carries the microscope Body Tube Transmits the magnified image Condenser Lenses that concentrate light by focusing it
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Effect of Chemicals on Daphnia Heart Rate Background: In the world today‚ there are many chemicals that people use to fix or help with issues within their own bodies. Some of these chemicals may include things like caffeine‚ nicotine‚ and alcohol. These supplements can have substantial effects on other things within the body like the brain‚ liver‚ and especially the heart. For example‚ many chemicals like caffeine‚ nicotine‚ aspirin‚ and sleep aid all have effects on the body which can cause your
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Place one slide under the microscope‚ noting down whether it is the experimental or control slide‚ locate the hyphal tip. Align the hyphal tip with the ocular micrometer in the direction of the polarized cell movement‚ this will allow the growth of the tip to be measured. 6. Measure
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Biology 12 - The Cell Part A: In ONE sentence‚ in the space provided‚ describe the function of the following organelles. Use point form. Use your own words. Paraphrase and condense the textbook definitions. DO NOT copy any definition or part of a definition. In the box to the left of each definition‚ make a sketch of the organelle. |SEE NOTES |1. cell membrane: control what goes in and out of cell‚ forms barrier with outside environment |
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SENSE OF SIGHT…. The eyes are sensory organs. They keep the brain updated with information about is what happening around the body. Both contain millions of tiny sensors that send messages along nerves to the brain. Sensors in the eyes respond to light and‚ through the brain‚ let us see the world. Sensors in the skin respond to touch and allows us to feel. * * * * The seeing eye… Light enters the eye through the clear cornea. It then passes through the
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the cells structure. A small square of a red onion skin (membrane) was observed under a microscope at high power (X40) magnification. The observation showed a large number of onion cells. The structure of one onion cell had a general rectangular shape with a developed cell wall‚ which gives the rectangular shape to the cell and a cell membrane just beneath it. The observation under the microscope of a cell of an onion skin soaked for 15 minutes in distilled water showed that the cell membrane
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tissue sections (Abcam‚ n.d.) . SCIENTIFIC MICROWAVE Images for pictures of scientific microwave available from: www.thermoscientific.com 8.2 ELECTRON MICROSCOPY Principle: A beam of electrons are used to create an image in an electron microscope (The John Innes centres‚ 2013). It allows much smaller objects to be seen in finer detail by being capable of
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Mitosis Under Microscope Lab Report A. The purpose of the investigation is to determine the time an onion cell spends in each part of the cell cycle. B. The significance of this investigation is to help us understand and know how long cells are undergoing mitosis. My personal interest is to know the phases of mitosis in cells in order to someday help find cures for cancer. C. The cell cycle is a chronological set of events‚ culminating in cell growth and division into two daughter cells. Some
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cell. The cell was first discovered by the 1665 English scientist Robert Hooke‚ who studied the dead cells of cork with a crude microscope. Robert Hooke was born on the isle of Whight and educated at the University of Oxford. Hooke could not have discovered the cell without the microscope which was developed by Antoni van Leeuwenhoek a 1674 Dutch maker of microscopes. Leeuwenhoek born in Delft‚ Holland and had little or no scientific education. Leeuwenhoek also confirmed the discovery of capillary
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