"The yeast menace" Essays and Research Papers

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    Introduction As stated in the Bio 107 Laboratory Manual‚ alcohol fermentation in yeast breaks down sugars into carbon dioxide and ethanol which is very important in many fields such as biofuel‚ industrial‚pharmaceutical and others. Amylase is an enzyme that break down starch/amylose in plants. Corn kernel contains starch‚ sugars and cellulose. This experiment focused on the effect of amylase on corn extract in respect to the rate of fermentation. Since amylase breaks down starch‚ the part of corn

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    hydrogen bonds holding it together to break. The substrate will not be able to bind as the shape of the active site is no longer complementary to the substrate enzyme complex and this cannot form. This is important in the experiment because if the yeast became denatured then it was not able to bind with the substrate (glucose) and the reaction would not be catalysed‚ preventing any CO2 from being formed. Because the temperature was kept constant throughout the results reflect this exactly‚ when the

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    Cassava Plant

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    The flour produced from the cassava plant‚ which on account of its low content of noncarbohydrate constituents might well be called a starch‚ is known in world trade as tapioca flour. It is used directly‚ made into a group of baked or gelatinized products or manufactured into glucose‚ dextrins and other products. Starchy foods have always been one of the staples of the human diet. They are mostly consumed in starch-bearing plants or in foods to which commercial starch or its derivatives have been

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    Ast 3

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    carbohydrate‚ such as starch or a sugar‚ into an alcohol or an acid. For example‚ yeast performs fermentation to obtain energy by converting sugar into alcohol. Bacteria perform fermentation‚ converting carbohydrates into lactic acid. Fermentation is the chemical transformation of organic substances into simpler compounds by the action of enzymes‚ complex organic catalysts‚ which are produced by microorganisms such as molds‚ yeasts‚ or bacteria. Enzymes act by hydrolysis‚ a process of breaking down or predigesting

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    Fruit Fly Lab Report

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    for this experiment was the male fruit fly and the female fruit fly and the off springs. The controlled variables in this experiment were temperature‚ media‚ yeast‚ to much of the yeast would kill the fruit fly’s so the class had to make sure that to much was not poured into the vials. this had to be controlled well. 6- 10 ten grains of yeast with water and media. A change in temperature could also tamper with the experiment as well as messing with the vials all of these variables had to be controlled

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    Cellular Respiration In this lab the effects of different substrates on the rate of cellular respiration is being put to a test which is a very interesting experiment. The three major substrate solutions being used for this experiment are glucose‚ maltose‚ and alanine. The issues this experiment addresses are cellular respiration occur in different stages which are glycolysis‚ citric acid cycle‚ and fermentation. In this lab the experiment determines the effect of different substrates on

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    Biology

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    Homework Title: Photosynthesis and Respiration 1) Define these terms and arrange them from smallest to largest: Ch 5 WIO #3 • Thylakoid membrane Answer: Thylakoid membrane is a compartment in a plant cell that has light pigment that carry out the photosynthesis process. • Chloroplast Answer: Chloroplast is a type of organelle found in plants and algae that carry our photosynthesis. • Reaction center Answer: Reaction center is where chlorophyll a molecule and other

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    Dragon Fruit

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    Dragon fruit‚ also known as pitaya or pitahaya‚ belongs to the Hylocereus genus of the Cactaceae family. It is recognized as leathery‚ slightly leafy – skinned sweet fruit of many cactus species rooted from Mexico‚ which was believed to be then brought to Central America by the European. Nowadays‚ dragon fruits are widely cultivated in the United States‚ the South East Asia region‚ Israel‚ Australia‚ Cyprus‚ as well as the Canary Islands (Morton‚ 1987). The term “dragon fruit” is used in English

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    Types of Fungi

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    Lab 4: Fungi Non-filamentous forms — Single-celled Yeasts Do an Internet search for a microscopic image of baker’s yeast‚ Saccharomyces cerevisiae (Ascomycota). Answer the following questions: 1. Do the yeast cells have a definite shape or is there considerable variation? Yeast cells seem to vary in shape‚ some look to be more oval and round‚ although. some slides did show pear and cylinder shapes. 2. Can you detect any subcellular structure? I cannot detect a clearly visible

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    The Destructors

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    In ‘the destructors’‚ how does the author convey a sense of menace and raising tension? The author of the destructors ‘Graham Greene’ uses lots of different techniques to convey a sense of menace and tension during the story. He starts off by introducing the characters‚ and all the characters have nicknames ‘Blacky‚ T’‚ this gives a sense of mystery as we wonder what some of their real names are. The gang clearly has rules and a sense of self restraint and if you break the rules‚ or utter the

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