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 * Flagella * Pilli * Cytoplasm Capsule * Keeps the cell from drying out and helps it stick to food or other cells
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DISCUSSIONIn the first part of the lab‚ since the effect of moist heat treatment on bacterial spores wasbeing investigated‚ the spores from Bacillus stearothermophilus was used. Using the three testtubes with spores‚ the first one (1) was autoclaved‚ the second (2) was boiled‚ and third (3)received no treatment. The fourth test tube (4) didn’t have a spore strip and served as a controlfor the effectiveness of the aseptic pipetting technique. As hypothesized‚ test tubes 1 and 4experienced no bacterial
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the reemergence of pertussis. There is pressure for vaccine research because of the resurgence of the pathogen. Pertussis remains one of the leading causes of vaccine preventable deaths in infants under 1 year of age. Pertussis is a Gram-negative‚ bacillus called Bordetella pertussis. This bacterium binds to the ciliated epithelial cells in the nasopharynx of the upper respiratory tract. Disease presentation depends on age and history of previous infection or vaccination. Young infants present apnea
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Microorganisms are classified according to their structure. By means of flow charts‚ diagrams and tables explain the differences between Viruses‚ Bacteria‚ Cyanobacteria‚ Achaea and Fungi. Bacteria or bacterium are unicellular microorganisms. They are essentially only a few micrometres long and form of various shapes including the spheres‚ rods and spirals. A BACTERIAL CELL Illustration courtesy of Wikipedia. A Virus (from the Latin noun virus‚ meaning toxic or poison) is a sub-microscopic
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Genetic Modification of Plants using Agrobacterium Agrobacterium tumefaciens is a rod-shaped aerobic soil bacterium that can infect dicot plants especially apple‚ pear‚ peach‚ cherry‚ almond‚ raspberry‚ rose & grapevines. It’s method of infection is unique‚ for it transfers some of its DNA to the chromosomes of the plant cell‚ causing a tumour to grow & causing the plant to make special organic food molecules for the bacterium. The process begins when a plant is wounded‚ often near the base
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Research Paper ‚ Microbiology Bibliography sites/ references http://www.news-medical.net/health/What-is-Leprosy.aspx http://www.sciencemag.org/content/308/5724/1040.full?sid=b8d5b987-ab6e-4e10-a253-ff2ad196ad0c http://cmr.asm.org/content/19/2/338.full http://www.stanford.edu/class/humbio103/ParaSites2006/Leprosy/snsx.htm http://www.stanford.edu/class/humbio103/ParaSites2005/Leprosy/clinical.htm * 2. Name and Description of disease Hansen’s Disease or Leprosy Incubation period – last
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Discussion The possible identity of the unknown organisms in the mixed culture was limited to bacteria that we had worked with previously in lab. Initially a Gram stain was conducted in order to distinguish the unknown bacterium as a Gram-positive and/or a Gram-negative organism (Lancaster and Bennett‚ 2012; Kellenberger‚ 2001). Based upon the results‚ both Gram-negative and Gram-positive bacteria were observed in the unknown mixed culture (Table 1 and Table 2; Kellenberger‚ 2001). In order
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HORTICULTURAL CROPS (AGR452) (APR 2011) Question 1 a) Define the following terms:- (5m) i) Horticulture:- the science and art of cultivating flowers‚ fruits‚ vegetables‚ turf and ornamental plants in an orchard‚ garden‚ nursery or greenhouse on anlarge or small scale. Often considered as those require intensive culture and grown in small areas. ii) Horticulturist :- A noun reffering to a specialist in horticulture. b) 5 common examples of classification used in horticulture
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Shistosoma japonicum. Shistosoma mansoni. Wuchereria bancrofti. Yersinia pestis. None of the above 7. What organism can cause cutaneous infections and can be transmitted by endospores? Staphylococcus aureus Pseudomonas aeruginosa Yersinia pestis Bacillus anthracis Streptococcus pyogenes 8. Which of the following statements is true of infection caused by Yersinia pestis? It can produce enlarged lymph nodes (buboes). It can infect the circulatory system‚ causing septicemia. It can cause pneumonia
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Desizing Desizing is done in order to remove the size from the warp yarns of the woven fabrics.The sizing material present on the warp yarns can act as a resist towards dyes and chemicals in textile wet processing. It must‚ therefore‚ be removed before any subsequent wet processing of the fabric. Object: 1. To eliminate the water repellent nature of sized cloth. 2. To increase the absorbency. 3. To reduce the consumption
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