into food and water also absorbed or injected in the skin. Some common biological agents that are heard in the news and also used in warfare include Anthrax‚ Cholera‚ Clostridium Perfringeus Toxin‚ Meliodosis idosis‚ and Staphylococcal. Anthrax (Bacillus anthracis) develops when a bacterial organism from infected animal tissues becomes deposited under
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Saccharification of starch for alcohol production 4. Brewing What organisms are responsible for amylase production? Although many microorganisms produce this enzyme‚ the ones most commonly used for their industrial production are Bacillus subtilis‚ Bacillus licheniformis‚ Bacillus amyloliquifaciens and Aspergillus niger General Lab Requirements: • Autoclave or pressure cooker • Hot Plate or Microwave oven • Nutrient Agar powder • Potato Dextrose Agar powder • Soluble starch • Weighing scales •
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Lab Practical 2 Morphological Staining Techniques Simple Stain- Uses 1 Stain 1. Acid Stains (- Charge)- Stains Background- Nigrosin‚ India Ink and Congo Red 2. Base Stains (+ Charge)- Stains Cell- Methylene Blue‚ Crystal Violet‚ Safranin Differential Staining Techniques- Any Staining Technique using 2 or more stains is differential. It allows us to differentiate between parts. 1. Gram Stain- Two Stains‚ PLUS Reagents- Distinguishes Chemical Composition of Cell Wall PG only (+ Purple)
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Microbiology Department of Microbiology University of Kwa-zulu Natal 25 October 2010 ABSTRACT Different types of bacteria in various forms are found all around us‚ and it is a microbiologist’s job to be able to identify these bacteria. Using various staining techniques and physiological tests‚ an isolated bacterium can be identified. In this experiment‚ a single bacterial colony was isolated form Mycorrhizal spores‚ and further tests done on that colony. Sub culturing was done after each week to ensure
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2. Material and methods 2.1 Sample collection The following 14 samples of Staphylococcus aureus were used in this study. All samples were obtained from food contact surfaces at three food premises in University of Putra Malaysia (UPM). Samples were collected from the surface of each material according to standard swabbing techniques. The collection was carried out during weekdays (15:00-17:00) after finished the preparation of foods. Sterile swabs were removed from the coded test tubes that contain
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of marine animals or internal organs of both aquatic and terrestrial animals. Amoeba reproduces asexually by binary and multiple fissions. They eat algae‚ bacteria‚ other protozoan‚ and tiny particles of dead plant or animal matter. Bacillus: They are rod shaped‚ gram positive bacteria found in soil and water. The largest are 2m across and 7m long. Most are aerobic but some under certain conditions can be facultative anaerobes. Each bacterium creates only one spore‚ which is resistant to heat‚ cold
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Prokaryote- single celled organisms‚ lack membrane bound nucleus Zoonosis- A disease that can be passed down from animals to humans Endospore- When Gram positive bacteria can form a thick coated‚ resistant structure Compare and contrast Gram positive and Gram negative bacteria. Gram negative- Dyes red its more complicated and has less peptidoglycan Gram positive- Dyes purple its less complicated and has more peptidoglycan Compare and contrast Domain Bacteria and Domain Archaea Bacteria 1. Cell
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that cell size had anything to do with the initiation of DNA replication in bacteria. The objectives and hypothesis was clearly stated in the paper. In order to find the answer to their question‚ the researchers used Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis) in their experiment. Both E. coli and B. subtilis are common and well known bacteria that are used in research. They took the E. coli and B. subtilis and placed them in specific media for each step the in process of replication
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Anthrax-Bacillus anthracis Anthrax is caused by the bacterium called Bacillus anthracis which is a spore forming‚ rod shaped bacterium. Central spores develop under all growth conditions except the living body of the host. It is classified as Bacilli. The most common form would be the cutaneous form. however as we saw during the 2011‚ terrorist attacks‚ the pulmonary form is very real and a serious threat to life. It affects the lungs and the GI tract. The last form is the
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ABSTRACT Antibacterial activity of medicnal plants has turned out to be a global concern. Medicnal plants are very useful in treating various diseases. Antibiotics are an important class of pharmacological agents used for treating antibacterial infections. Although antibiotics were first isolated from fungi and bacteria but over the years more and more synthetic antibiotics has been synthesized‚ which are in great demand. This present study has been done to determine the antibacterial activity of
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