Labset One Worksheet 1. Label and describe the function of each of the following parts of the microscope (7) A. The ocular lens/eyepiece transmits and magnifies the image from the objective lens to the eye. B. The body tube transmits the image from the objective lens to the ocular lens. C. The nosepiece is a rotating mount holding many objective lenses. D. The objective lens is the primary lens that gathers as much light as possible from the specimen and brings it to a bright focus
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International Journal of Food Microbiology 71 Ž2001. 1–20 www.elsevier.comrlocaterijfoodmicro Review article Bacteriocins: safe‚ natural antimicrobials for food preservation Jennifer Cleveland a ‚ Thomas J. Montville a ‚ Ingolf F. Nes b‚ Michael L. Chikindas a‚ ) a Department of Food Science‚ Rutgers‚ The State UniÕersity of New Jersey‚ 65 Dudley Road‚ New Brunswick‚ NJ 08901‚ USA b Laboratory of Microbial Gene Technology‚ Department of Biotechnological Sciences‚ Agricultural UniÕersity
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64. Interpret the following results: A. The color of the medium remains purple or light blue-gray; there is also no change in the texture of the medium. * No change B. Change in the color of litmus from purple to pink or pink-red throughout the tube. Upon further incubation a white ring of litmus forms at the bottom of the tube at the pink-red color is now present only at the top of the tube. Still further incubation leads to the formation of a rennet curd at the bottom of the
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Lahela Correa 12/08/2009 Microbiology 140 Matthew Tuthill Unknown Lab Report Introduction There are many reasons for knowing the identity of microorganisms. The reasons range from knowing the causative agent of a disease in a patient‚ so as to know how it can be treated‚ to knowing the correct microorganism to be used for making certain foods or antibiotics. This study was done by applying all of the methods that I have been learned so far in the microbiology laboratory class for the identification
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bacteria‚ except Enterococcus and some species of Staphylococcus)‚ crystal violet dye (which also inhibits certain Gram-positive bacteria)‚ neutral red dye (which stains microbes fermenting lactose)‚ lactose and peptone. QUALITY CONTROL Results after 24 hrs at 35º C Organisms ATCC Growth Colour Escherichia coli 25922 + red Proteus mirabilis 12453 + colourless Salmonella typhimurium 14028 + colourless Streptococcus faecalis 29212 - or partial
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Introduction The purpose to this lab was to isolate and identify two unknown bacteria from a mixed culture provided to us by our instructor. This study was done by applying all of the methods that have been instructed on thus far in microbiology laboratory class. Each test performed‚ provided us with some key information about the unknown microbes in question and how the bacteria function. Materials and Methods Over a two week period‚ eight prepared types of test media were provided to
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Ventilator Associated Pneumonia is one of the many nosocomial bacterial infections that patients in Intensive Care Units might acquire during their stay. VAP is the number one hospital acquired infection contracted in ICU’s. It occurs within 48 hours from prolonged oxygen therapy by endotracheal tube or tracheostomy. Intubation compromises the oropharynx and trachea by obstructing the normal airway. This allows easier access for microorganisms in gastric and oral secretions to enter the lungs and
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Microbial Diversity and Ubiquity Microorganisms are microscopic organisms that are so small that that they can only be visualized by the aid of a compound-brightfield microscope. While we generally cannot see individual microorganisms with the naked eye‚ they are present in virtually every habitat known to man. Microorganisms can be prokaryotic—the bacteria or eukaryotic—the algae‚ protozoa or fungi. While viruses are acellular they are also studied in the scope of microbiology because
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Introduction to Microbiology Laboratory report №10 Physical factors affecting growth microbes: Temperature‚ pH and oxygen requirement. Student: Temirlan Aitbekov Lab partner: Kanat Sadykov Instructor: Alessandra Clementi‚ MD‚GP Lab date: 7/11/14 Due date: 14/11/14 Nazarbayev University Abstract: This experiment is directed
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the lipase from A. faecalis MOR02 due to having high similarity with the lipase sequence from strain JG3 during CLUSTAL alignment and the alignment of the deduced amino acid with the referred sequence was carried out consecutively (Figure IV.8). On the other hands‚ the possible ORFs were automatically obtained (Appendix 4.A) via ExPASy online software‚ the second method. To find the most possible one‚ the obtained ORFs were aligned with lipase encoding ORF from Alcaligenes faecalis resulted one sequence
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