syllabus and b. Review of the Parts of a Microscope ii. Review of lab exercises about different types of Microscopes 2. Survey of Microorganisms c. Viewing‚ drawing‚ and describing several types of fungi‚ algae‚ and Bacteria iii. Chlamydomonas iv. Spirogyra v. Penicillum mycelium condidiophores vi. Cladophora vii. Volvox viii. Paramecium caudatum ix. Escherichia coli x. Bacillus subtilis
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Sofowora (1982) reported that Africa has 300‚000 medicinal plants and Chang (1993) reported that the world mushroom biodiversity counts 1.5 million species. Summary Abstract 1_ Prior knowledge A) Bacteria 1) Salmonella 2) Shigella B) Salmonella Shigella Agar C) Moringa Oleifera a very useful tree D) The solar disinfection with PET bottle 2_ Study of different methods to purify water A) Water filtration 1) Study of filtration system with
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disease causing microorganism and the poisonous toxins they may produce. Biological hazard are far the most dangerous foodborne hazard in the food service and food retail businesses. These includes harmful microorganism seen only in the microscope 1. BACTERIA 2.VIRUSES 3. PARASITES 4. MOLDS 5. YEAST Other living organism are: • Insects: RODENTS FARM ANIMAL DOMESTIC PETS BIRDS FISH PLANTS TRANSMIT DISEASE TO HUMAN BEING • Even healthy people are sources of pathogenic microorganism
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pasteurization. Pasteurization kills most pathogen‚ increases the product’s shelf life and preserve a natural taste of milk. After pasteurization‚ nonpathogenic bacteria such as Bacillus which is gram positive‚ rod shaped bacteria still present in milks and will metabolize protein into ammonia product and raise the milk’s pH. Other bacteria such as lactobacillus and Streptococcus ferment lactose to lactic acid and acetic acid. Those acids sour the milk and convert the casein in milk to curd. The sour
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Holtz MICR 202L November 09‚ 2016 Exercise 15: Antimicrobials Purpose The purpose of exercise 15 was to determine the effects of different antimicrobials on both Gram-positive bacteria and Gram-negative bacteria. Procedure Overall‚ exercise 15 was broken down into two days of procedures. For the first part of the experiment‚ we divided three petri plates into three equally sized units on the plate and marked them with wax pencils in accordance
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Antibiotics research 1. Define the term antibiotics Antibiotics are a drug used to treat infections caused by bacteria and other microorganisms. Originally‚ an antibiotic was a substance produced by one microorganism that selectively inhibits the growth of another. Synthetic antibiotics‚ usually chemically related to natural antibiotics‚ have since been produced that accomplish comparable tasks 2. a) who was the first scientist to discover antibiotics Alexander Fleming (1928) b) Briefly
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classification system established by Robert Whittaker in 1969. Bacteria - small one celled monerans. * Bacteria like a warm‚ dark‚ and moist environment They are found almost everywhere: water‚ air‚ soil ‚ food‚ skin‚ inside the body and on most objects. 3 Shapes of Bacteria Bacteria are classified by shape into 3 groups: Spiral: spirilla Rod-shaped: bacilli‚ bacillus Round: cocci 7 Major Structures of a Bacteria Cell * Capsule * Cell wall * Ribosomes * Nucleoid
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2011/12/15 What a wonderful creature “Bacteria” is! Today‚ a lot of creatures live in where we live in. A lot of creatures live with ours. However our world face a lot of troubles. For example water depression‚ soil depression‚ lost of water‚ and so on. If we can look out saver for this ploblem‚ we be able to live in our world much better. Then‚ the number of “Bacteria” is much higher than any other creatures in our world. Because this creature can
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Background Information Bacteria are prokaryotes under the kingdom Monera. This means they have no true nucleus. Most bacteria also lack internal organelles. Most bacteria is beneficiary while a fraction are pathogens. Pathogens cause human and animal disease. However‚ they can also produce antibiotics. Beneficial bacteria can do various tasks from producing yogurt to decomposing dead organic matter. Most bacteria are one in three shapes. The first one is coccus which is spherical.
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experiment that was done to demonstrate the effects of lysozyme on populations of Gram positive and Gram negative bacteria. Bacteria have a cell wall composed of peptidoglycan that gives the wall its strength. Gram negative bacteria have and extra component of lipopolysaccharide (LPS)‚ that is stabilized with magnesium ions‚ to their cell wall that further protects them. When Gram positive bacteria are treated with lysozyme‚ the lysozyme breaks down the peptidoglycan‚ allowing the cell to rupture if it is
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