ST XAVIER INTERNATIONAL SCHOOL‚ BHUBANESWAR SUMMATIVE ASSESMENT ---1 SEPTEMBER 2012 CLASS: VIII SUBJECT : BIOLOGY CHAPTER-1 CROP PRODUCTION AND MANAGEMENT EXERCISE 1. Select the correct word from the following list and fill in the blanks. Float‚ water‚ crop‚ nutrients‚ preparation (a) The same kind of plants grow and cultivated on a large scale at a place is called
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com Synopsis This course covers the role and significance of microorganisms in foods and environment‚ factors affecting their growth in foods‚ effects of food processing and preservation techniques on the growth and survival of microorganisms‚ microbial activities as a causal agent for food poisoning and spoilage‚ microbial quality of food and water‚ indicator organisms and HACCP‚ probiotics and beneficial microorganisms. Learning Results: Students will be able to: 1. Explain factors
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FOOD AND INDUSTRIAL MICROBIOLOGY Food spoilage‚ food infections and intoxications caused by microorganisms and methods for their detection Dr. Neeraj Dilbaghi Reader‚ Department of Bio & Nano Technology Guru Jambheshwar University of Science and Technology Hisar- 125001 and Dr (Mrs.) S. Sharma Professor‚ Department of Microbiology‚ CCS Haryana Agricultural University‚ Hisar- 125001 (Revised 25-Sep-2007) CONTENTS Introduction Food Spoilage and General Principles Underlying Spoilage of Food Intrinsic
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Biogenesis. Leeuwenhoek invented the first microscope and with that microscope he discovered microorganisms or tiny moving objects. Inferring that these objects were alive‚ he called them tiny animals. Needham claimed that Spontaneous Generation could only occur under the right conditions. To prove his thought‚ he boiled gravy‚ let it cool and then sealed the flask‚ later he finds the broth is filled with microorganisms. “These little animals”‚ he inferred‚ “can only have come from juice of the gravy.” Needham
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be able to adequately study and characterize a certain microorganism‚ microbiologists need to separate and isolate this microorganism from the many other microorganisms with which it usually shares its natural environment or habitat; proper and professional execution of bacterial isolation techniques are at the centre of routine activities in any professional microbiology laboratory. The task of the microbiologist is to isolate the microorganism under investigation from the mixed culture of the sample
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From the time of the Ancient Romans‚ through the Middle Ages‚ and until the late nineteenth century‚ it was generally accepted that life arose spontaneously from non-living matter. Such "spontaneous generation" appeared to occur primarily in decaying matter. For example‚ a seventeenth century idea for the spontaneous generation of mice required placing sweaty underwear and husks of wheat in an open-mouthed jar. Then‚ waiting for about 21 days‚ during which time it was said that the sweat from the
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* 3. Must have living cells to make more cells * Anton Von Leeuwenhoek * Father microbiology & microscopy * Discovered microorganisms (animalcules) * Disproved microorganisms were heaven sent * Put clean bowl out during rainstorm & no microorganism * Let sit * Days later microorganisms formed from air * Ferdinand Cohn * Discovered endospores (enable some bacteria to survive adverse environmental conditions) * Why
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diverse group: Bacteria - Which one of the following sequences exhibits increasing size? Viruses to bacteria to protozoa - Which one of the following would be consistent with the idea of spontaneous generation? Sick people give rise to microorganisms in their body Chapter 3 - The gram stain technique is valuable in distinguishing: different types of bacteria One of the below is wrong - permit eukaryotic motility: Flagella - are involved in group translocation: Chromosomes - Contain
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What Is Microbiology? Microbiology is the study (logy) of very small (micro) living (bio) things. Microbiology is the study of microorganisms. These "bugs" include: bacteria (that’s the Latin plural for bacterium); viruses (that’s the non-Latin plural for virus - virii sounds weird‚ so I don’t say it); and‚ fungi (that’s the Latin plural for fungus - which by now you have guessed‚ or already knew‚ and may not be all that interested to know‚ anyway). Microbiology is actually made up of several
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experiment‚ Escherichia coli is used as a sample to study the growth kinetic of microorganism in shake flask. A different volume of E.coli was transferred into 250ml Erlenmeyer/shake flask containing media for the nutrient of microorganism. The different volume of microorganism transferred will give the different effect of reading on the constant volume of media used. There are three ways to test the growth kinetic rate of microorganism on shake flask‚ which are by optical density (OD)‚ glucose analysis and
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