Search Results - Spore
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WikiProject Biology or the Biology Portal may be able to help recruit one. In biology, a spore is a reproductive structure that is adapted for dispersal and surviving for extended periods of time in unfavorable conditions. Spores form part of the life cycles of many plants, algae, fungi and some protozoans.[1] A chief difference between spores and seeds as dispersal units is that spores have very little stored food resources compared with seeds. Spores are usually haploid and unicellular and are produced by meiosis in the sporophyte. Once conditions are favorable, the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes. Two gametes fuse to create a new sporophyte. This cycle is known as alternation of generations, but a better term is "biological life cycle", as there may be more than one phase and so it cannot be a direct alternation. Haploid spores produced by mitosis (known as mitospores) are used by many fungi for asexual reproduction.
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Showing 1 to 6 of 6 Articles matching 'Spore' in related articles. |
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1. Anthrax Information and Treatment
August 18, 2008
Anthrax is an real infectious disease and lead caused by a spore-forming bacterium known bacillus anthracis. Anthrax most normally happens in wild and domestic little vertebrates (cattle, sheep, goats, camels, antelopes, and extra herbivores). Anthrax cannot be spread directly from person to person, but a patient’s clothing and body may be contaminated with anthrax spores. Human infection may develop by three ways of revelate to anthrax spores: cutaneous , gastrointestinal (by ingestion), and pulmonary (inhalation). In North America, human cases of anthrax are uncommon.
Anthrax outbreaks... (read more)
Author: Juliet Cohen
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2. Brucellosis - Symptoms and Causes of Brucellosis
May 07, 2008
Brucellosis, also called undulant fever, or Malta fever, in humans is a highly contagious zoonosis (infectious disease transmitted from animals to humans) caused by bacteria of the genus Brucella. Brucella spp. are small, gram-negative, non-motile, non-spore-forming rods. Brucella spp. are facultative intracellular parasites causing chronic disease, which usually persists for life. Brucellosis is a bacterial disease of both humans and animals recognized since the 19th century.
Brucellosis is a typical zoonotic disease and it spreads from animal to man but it does not spread from man to ma... (read more)
Author: Peter Hutch
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3. Significance of a Mold Inspection Report
March 29, 2008
Because mold spores are tiny and airborne seed like particles that are designed to float on every air stream, you can locate mold spores everywhere indoors as well as outdoors. When mold spores settle and start to grow in a moist indoor environment mold spore levels and mold odor levels may become problematic. Spores may cause ailments even if they are dead spores. Molds affect persons with asthma and allergy and graver is the problem with people who suffer with immune system problems. In such persons the body’s immune system cannot fight off mold and it simply grows in that person’s body. T... (read more)
Author: Remy Na
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4. This Is Why Bacteria Are Refered To As An Ancient Form Of Life
March 10, 2008
Bacteria are single celled, microscopic organisms few micrometers in length. They do not have a membrane bound nucleus or membrane bound organelles such as the chloroplasts and the mitochondria. It does not contain steroids, cholesterol, mitosis or meiosis. The reproduction generally takes by asexual reproduction. Most of the bacteria's create a single spore when their supply of food runs low. The water gets removed from these spores leading to metabolism. These spores are very resistant to conditions like dryness.
Bacteria are an ancient form of life. Bacteria's have a wide number of sh... (read more)
Author: Muna wa Wanjiru
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5. Studies Indicate Black Mold Can Impact Your Health: Health Effects And What You Can Do To Lessen Them
December 08, 2006
Mold is a fungus growth, which begins with a minute spore. Toxic black molds can be found anywhere a dark and damp environment allows them to grow. Spores can be breathed in, absorbed through the skin or ingested on our food. Young children, senior citizens and anyone with immune deficiencies caused by disease, chemotherapy, etc are particularly vulnerable to grave illness following exposure to microbial contamination.
Laboratory studies in animals and at the cellular level offer supporting data for the direct toxicity of fungal spores and mycotoxins in mammalian lungs (University of Conn... (read more)
Author: Adam O'Connor
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6. Mold
March 13, 2006
Molds are fungal growths that reproduce asexually by means of spore formation. Their basic body consists of a threadlike growth called the mycelium, which sends out branches called hyphae. It is in the tips of these hyphae that spores are formed. Molds are saprophytic in nature – i.e., they depend on dead and decaying organic matter for their nutrition. They are found growing on rotting fruits and vegetables, on decomposing bread and biscuits, and on damp walls and ground. Mushrooms and bracket fungi are close relatives of molds; they all belong to the plant group of fungi.The interrelation of... (read more)
Author: Josh Riverside
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