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Q. Explain Clostriduim botulinum?
Clostriduim botulinum is widely distributed in soil and marine sediments throughout the. world. It is also found in the intestinal tract of animals, including fish. Most of the outbreaks of botulism have been associated with the products ofJish or marine ' animals, meat, fiuits and vegetables, including mushrooms. Insufficiently heated canned and bottled foods are at a high risk as these provide the anaerobic (without air) environment required by the organism to grow. The types of foods which have acted as vehicles of infection differ from country to country. Generally, the toxins A and B have been implicated in improperly home canned foods. The type E outbreaks have occurred by the ingestion of fermented or smoked marine products, fruits and vegetables-including mushrooms. Home cured ham and other meat products have been implicated in the outbreaks reported from Western Europe. The ,organism can be isolated occasionally from many foods because of its widespread occurrence in the environment. However, it is interesting to note that because of their non-proteolytic characteristics; their growth in foods cannot be detected by off-odours and off- flavours.
Recent molecular analyses indicate that the artiodactyls, which include hippos and camels, are paraphyletic, whereas cetaceans are monophyletic and cetaceans and hippos form a clad
Explain the Features of Alternaria? 1. Alternaria colony is wooly and compact. Underside is very dark coloured. Colony colour is grayish green or black with gray edges rapidly
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Q. Concerning the occurrence of separated sexes how are the beings of the phylum Annelida classified? These beings may be dioecious (the majority of polychaetes) or hermaphrodi
Bacteria:- Advantages High yield of protein (60-80%) Can be grown on paraffin, cellulose waste and molasses. Growth rate is fast. Disadvantages If the bacteri
Structural isomers: Select one: a. Have the same molecular weight b. Have the same connectivity c. Are mirror images d. All of the above e. None of the above
Explain the Process of IgE-Mediated Allergic Response? Basically, there are three steps involved with the IgE-mediated allergic response These include: Step 1: Sensitizat
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Shows evidence of the ability to see the interaction between environment / ecology and genetics / evolution Some candidates may recognise that evolution can result in less no
Q. What is the main risk factor for skin cancer? The major risk factor for skin cancer is solar exposition of the skin without protection against ultraviolet radiation (a poten
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