Study guide for Microbiology Chapter 2 Name________________ 1. List and describe the sequence steps routinely used to identify bacteria. These are referred to as the “five I’s” in your text. 2. Define / describe each of the following as they apply to microbiology: a. Culture f. pure culture b. Inoculum g. contaminated culture c. Inoculation h. mixed culture d. Colony 3. Microbiologists employee a number of approached to acquiring a pure culture
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Forensic Chemistry and Forensic Chemist Forensic chemistry is becoming an increasingly popular topic. It is being used quite often in the real world with police investigations‚ cases‚ and is also being magnified in television shows including Forensic Files‚ CSI‚ and Bones (What is Forensic Chemistry?). Forensic chemistry is important because without it we wouldn’t know the outcome of a crime. The forensic chemist’s job is to examine evidence given to them from a crime scene‚ when it happened‚ and
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Chapter 2: Patterns in Nature 1. Cell theory • 1590: Dutch grind glass lens (1st compound microscope) • 1665: Robert Hooke uses compound m. analysis thin cork slices as filled with air enclosed in boxes (cells) distinct • 1676: Dutch sees microorganism under microscope from pond water • 1824: French suggest all organisms composed of cells • 1827: Robert Brown (Brownian motion) discovered nucleus in plant cell • 1838: German produced evidence that all organisms made of cells • 1859:
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Did A. afarensis make and use stone tools at the site of Dikika some 3.39 million years ago? The first evidence of stone tool use and manufacture was found in Gona (Ethiopia) which dates back to between 2.6 and 2.5 million years ago as well as several cut-marked bones found near the Bouri site which indicates stone tool use 2.5 million years ago (McPherron et al. 2010). A. Afarensis is a hominin species found between 3.6 and 2.9 million years ago at sites in Ethiopia‚ Kenya‚ and Tanzania. Since being
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up and record the images that come from PET scans. A radioactive compound is inhaled or injected into the patient‚ and it accumulates in tissues. As the atoms in the compound decay‚ they release positrons‚ which‚ when they collide with electrons‚ both the electrons and positrons are annihilated‚ and two photons (light particles) are emitted. (See the image on the right). The photons are picked up by a detector ring on the PET scanner‚ and the computer uses the information to generate three-dimensional
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1. The advantages of using an electron microscope is that it has a greater magnification‚ so you can see more detail about the organism. It would be preferable to use a light microscope when you want to see the cell in the act of moving or dividing. 2. Prokaryotic cells don’t have organelles like eukaryotic cells do. Eukaryotic cells contain its DNA within its nucleus‚ while prokaryotic cells keep it within the nucleoid. Prokaryotic cells are also more minute than the eukaryotic cells. Also although
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ABSTRACT Television has been an excellent medium for entertainment and information ever since the invention of the electron scanning tube in 1923 by Vladimir Kosma Zworykin‚ who is considered the father of the modern television. With the conversion to digital format 1080i in 1998‚ there has been a boom in the production of different types and technologies for Televisions. A new generation of televisions has been developed‚ including liquid crystal display (LCD)‚ rear projection‚ and high definition
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Microbiology is the study of microorganisms which must be viewed with the aid of a microscope or electron microscope. The importance of microbiology includes: used in biomedical research‚ creation of medicines‚ environmental applications and new research tools. Disease causing organisms include: protists‚ bacteria‚ viruses and other microorganisms. Bacteria are important for fixing N2 in a usable form for plants. Bacteria and some fungi are important in decomposition and recycling
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1.CANCER Cancer /ˈkænsər/‚ known medically as a malignant neoplasm‚ is a broad group of diseases involving unregulated cell growth. In cancer‚ cellsdivide and grow uncontrollably‚ forming malignant tumors‚ and invading nearby parts of the body. The cancer may also spread to more distant parts of the body through the lymphatic system or bloodstream. Not all tumors are cancerous; benign tumors do not invade neighboring tissues and do not spread throughout
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Exercise 4 Lab Report (3) Individual: Prepared blood slide (a.) Compare red and white blood cells - what cellular features are present in white cells but not in red blood cells and vice versa? Include a digital image of the blood cells present in the permanent dry. Red Blood cells carry hemoglobin inside of them which helps carry oxygen from the lungs to the rest of the body. Hemoglobin is what gives blood cells the red pigmentation. The amount of blood cells present in the blood give it
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