“selectively toxic.” Why is it an important feature of antimicrobial agents? A substance or drug is selectively toxic if the agent used in it is able to kill the microorganism that it is meant to without harm to the host that has taken the drug. This is very important to microbial agents in that it enables these agents to inhibit a microorganism by interacting with microbial functions or structures different from those of the host; thereby showing little or no effect to the host. 2. What are broad
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Project 1: Antimicrobial Activity of Soil Isolates John Franklin Farrar Department of Biology and Microbiology and Biology Address BOX 22750 BOWEN HALL‚ RALEIGH‚ NC‚ 27607 Abstract: Isolation and characterization of microorganisms is a practice that aids in Increasing ones knowledge of a laboratory setting and it helps improve on Using sterile technique. Isolates of soil microbes can be categorized and Characterized based on a number of criteria ranging from gram-staining
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To: From: Re: Louis Pasteur Louis Pasteur: Greatest Achievements Louis Pasteur was one of the most important scientists of our time. The foundation of our knowledge about health and disease comes from the discoveries of this one man. He made many discoveries and solutions for problems of the every day life that are still in effect today. Pasteur was born on December 27‚ 1822 in a little town called Dôle in the foothills of the Jura Mountains of eastern France. When he was five years old his family
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is directed to determine the effect of pH on growth of microorganisms by varying the pH ranges: pH3‚ pH6‚ pH7‚ pH9; the last part is about effect of oxygen requirement on growth of microbes‚ where the microorganisms grow depending on oxygen demand. Introduction: Microorganisms are classified depending on growth requirements. In this laboratory the microorganisms are divided due to effect of temperature‚ pH and oxygen demand. The microorganisms are divided into three groups depending on temperature
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Dr. Akinyemi‚ A. A. Aquaculture and Fisheries Management University of Agriculture‚ Abeokuta‚ NIGERIA. Microorganisms • Microorganisms is the existence of every minute living organisms or they are living features that can be seen with the aid of microscope‚ microscope‚ most of them are normally singlecelled while some may exist in multicellular forms. • These microorganism‚ though minute and microscopic‚ are a very powerful group of creatures. • They can make healthy animals sick
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scientific nomenclature that uses genus and specific epithet names. List 4 diverse sources of microorganisms that demonstrates microorganisms are ubiquitous (everywhere). Explain the orgin of microbes‚ i.e.‚ where do microbes come from? (Think "Cell Theory") Identify four activities of microorganisms that are beneficial to human existence. Identify two activities of microorganisms that are detrimental to human existence. Identify the importance of Koch ’s postulates. Explain
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physical methods.and in this experiment we will talk about chemical agent and its affect on bacteria which depends on the concentration ‚type and intensity of agent ‚ the length of exposure to the agent ‚ the number of microorganism present and the material bearing the microorganism . Bacterial growth can be controlled by chemical agents such as: sterilization in which we kill all living organisms. Disinfection‚ decontamination‚ disinfectant‚ antiseptic‚ sanitizer and antibiotic are another chemical
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improve the drinking quality of water. There are also ultraviolet systems which do a remarkable job at disinfecting water. Ultraviolet systems can destroy 99.99% of harmful microorganisms in the water very effectively and they do this by using a lamp or bulb which emits UV light which is then used as energy to attack the microorganism in the water and essentially destroy it‚
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1 Student: ___________________________________________________________________________ 1. Extant microorganisms are organisms from the fossil record that are no longer present on Earth today. True False 2. All cellular organisms can be placed into one of three __________‚ which include the Bacteria‚ Archaea‚ and the Eukarya. ________________________________________ 3. Archaea are cellular organisms that have unique cell membrane __________. ________________________________________
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� Microbiology is the study of microorganisms� Microorganisms‚ roughly‚ are living things that are too small to be seen with the naked eye� Microorganisms cannot be distinguished phylogenetically from �macroorganisms� (see variety of microorganisms‚ below)� Microbiology is more a collection of techniques: aseptic technique‚ pure culture technique‚ microscopic observation of whole organisms‚ etc.� Microbiologists isolate specific‚ culturable microorganisms from wild populations
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