Introduction The purpose of this lab was to calculate and determine the optimal dosage of ultraviolet (UV) light to expose Saccharomyces cerevisiae (S. cerevisiae) to that would result in a survival rate of 20-40%. Saccharomyces cerevisiae commonly referred to as baker’s yeast is a single-celled eukaryote. Yeast is capable of growing as either a haploid or a diploid cell. The diploid cell can reproduce mitotically or sporulate‚ a process initiating meiosis and forming an ascus with four spores (Sacchromyces
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1. BIOLOGICAL CLASSIFICATION Aristotle’s classification - Aristotle was the earliest to attempt a more scientific basis for classification of organisms. - He classified plants into trees‚ shrubs & herbs and animals into two groups‚ those which had red blood and those that did not. Two-kingdom classification - In Linnaeus’ time Two Kingdom classification (Kingdom Plantae & Kingdom Animalia) was developed. Drawbacks of 2-kingdom classification Prokaryotes (Bacteria‚ cyanobacteria) and eukaryotes
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reproduce asexually the DNA loop is copied so that there is some for each new cell. The bacterial cell deivides into two by making a new cell wall. This type of asexual reproduction is called binary fission. Spore Production in Fungi Pin mould is a fungus which grows on bread and reproduces asexually by making spores. They are small and light like spects of dust‚ and float through the air. When spore lands on a damp surface‚ it splits open and thread grows out. The hypha (thread) grows over surface
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offsprings. Meiosis in fungi differs from those in plants and animals. Fungi are composed of hyphae‚ which are tubules that make up the frame. These hyphae together form a clump or a mat that is the mycelium (Campbell‚ 637). The hyphae are key to fungus reproduction. Typically fungi produce large amounts of spores through either sexual or asexual reproduction. Fungal hyphae are normally haploid. When two fungi mate‚ the hyphae fuse together. The movement of the two fungal nuclei into one cytoplasm
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Mushrooms How To Grow Magic Mushrooms An Easier Method The Joys Of Mushroom Gardening The method presented here is recommended for people who have tried another method of growing magic mushrooms and failed. This method is not recommended for first time growers. It is easy and will work very well but the yield will be smaller than using the mushroom grow guides here and here. Both are free and recommended for first time growers. Even if you decide to use this method‚ read other grow guides
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Bioluminescence in Fungi INTRODUCTION What is Bioluminescence? The current paper main focus is on bioluminescent Fungi but the basic features of bioluminescence discussed are common to all bioluminescent organisms. Bioluminescence is simply light created by living organisms. Probably the most commonly known example of bioluminescence by North Americans is the firefly‚ which lights its abdomen during its mating season to communicate with potential mates. This bioluminescent ability occurs in
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Designation of phylum cryptomycota within kingdom fungi Introduction The cryptomycota are considered to be to be an early branching clade of organisms‚ the only known members are species that belong in the genus Rozella (Lara et al 2010‚ Jones et al 2011‚ James and Berbee 2012). It has been suggested due largely to the amount of environmental sequences collected the phylum may be as diverse as the whole kingdom fungi (Jones et al 2011). While Rozella were originally placed in the fungal phylum
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Fungi Web quest Amanitas Amanita (various species) Family: Amanitaceae (amanitas) in the phylum Basidiomycota (club fungi) Description: There are about 600 species in the genus Amanita worldwide. Each amanita starts as an egg-shaped button that can resemble a small puffball. These breaks open as the mushroom grows. Fully developed amanitas are gilled mushrooms with parasol-shaped
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Introduction A fungus is a member of a large group of eukaryotic organisms (Bryden‚ 2007).Fungi is considered important microorganisms‚ because of its beneficial role in human life; it has been used for many purposes such as in medicinal manufacturing‚ industries‚ food production‚ and plant nutrient supplements. Also it has role in cycling of carbon in the atmosphere‚ since it is main decomposers of organic matter (kavanagh‚ 2011). Fungi can be found naturally everywhere in the environment;
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MYCOTOXINS [THE ENVIROMENTAL & ECONOMIC EFFECTS] OUTLINE INTRODUCTION: * What are mycotoxins? * “Mycotoxins (ie toxins produced by molds) are fungal metabolites that can contaminate foods and feeds and cause toxic effects in higher organisms that consume the contaminated commodities. Therefore‚ mycotoxin contamination of foods and feeds results is a serious food safety issue and affects the competitiveness of US agriculture in both domestic and export markets” (Cleveland T et al
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