decrease in pH‚ more bacteria present‚ and an increase in absorbency. The results proved that fermentation occurred with three positive confirmatory results from the gas production‚ pH‚ and turbidity tests‚ while the Gram stain test acted as a negative confirmatory test. Introduction: The main goal of this experiment was to successfully ferment milk into a yogurt-like product called Kefir. The fermentation is accomplished with a symbiotic combination of different bacteria and yeasts. The main type
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* Would yeast produce more carbon dioxide with the presence of sugar at room temperature or in an incubator? | -Observing Cellular respiration in yeast cells. | Yeast Lab Background Information: Yeast is a tiny unicellular fungus that obtains energy from outside sources (a heterotroph) mostly sugars in order to grow and reproduce. Yeast is often used in bread dough to make the dough rise. With the presence of oxygen a yeast cell creates energy by performing cellular respiration and
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In Cold Blood‚ by Truman Capote tells the story of when the poor Clutter family was slaughtered in Holcomb‚ Kansas in 1959. In Cold Blood took six years for Capote to investigate and write‚ and it put an incredible amount of pressure on Truman‚ so much so that he never published another book again. Even though in cold Blood doesn’t have a great ending‚ the book was worth reading because of the intriguing plot‚ dark tone‚ and the interesting characters. One reason for why I liked the book‚ In Cold
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Cheese: A Home to Bacteria “Cheese is just a means of controlled spoilage‚” said Steve Jenkins‚ a Master Cheesemonger at Fairway Market. (Cheese) Bacteria‚ or starter cultures‚ control the flavor‚ hardness‚ type‚ and many more aspects of cheese. The two main strands of bacteria involved in cheese making are Lactococcus and Lactobacillus‚ which ferment sugars found in the milk. Humans have learned to manipulate bacteria and the fermentation process to produce different types of cheese such as Swiss
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1. Introduction Microscopy is an essential technique not only in cell biology but natural science as a whole. We compared different types of microscopic techniques ‚ according to the specimen used and the scope of the experiment. Two specimens‚ stained and unstained‚ containing CHO cells‚ were prepared‚ examined and analyzed under the microscope using bright field (HF)‚ dark field (DF) and phase contrast (PH) settings. In addition‚ the four phases of cell division cycle were estimated.. Bright
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CHAPTER TWO Beneficial bacteria in the environment and their uses. In today’s world‚ the environment and its related issues are steadily gaining a lot of importance. Some bacteria are helpful and are used to obtain balance in the environment. It has been seen that helpful bacteria are useful in dissolving organic sludge from water‚ breaking down the growth of algae‚ reducing the various noxious odours such as hydrogen sulfide odours‚ reducing ammonia levels‚ promoting faster growth of fish in the
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This purpose of the lab was to observe and compare the reactivity of the elements within groups and the reactivity of the groups themselves. The elements of each group were reacted with fire‚ acid (HCl or HNO3)‚ or in deionized water. According to the observations‚ the most reactive group was the alkali metals. Since the alkali metals are in group 1‚ they only have one valence electron and can easily lose this electron. As you move towards the right of the periodic table‚ the number of electrons
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Observing Various Microevolution Cases using Population Genetics: Using a Population Gene Pool Simulator‚ PopCycle Abstract The study of microevolution was tested in this laboratory experiment through the examination‚ observation‚ and analysis of various population conditions‚ some under the Hardy-Weinberg Theory of Genetic Equilibrium‚ which would advance the student scientists ’ understanding of both microevolution and the mathematical aspects of microevolution known as population genetics.
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Number and percentage of children within each blood lead level category‚ out of all children screened 9 to 47 months of age. The blood lead levels are organized into four categories: 0-4 µg/dL‚ 5-9 µg/dL‚ 10-24 µg/dL‚ and ≥25 µg/dL. For each category‚ the number (N) and percentage (%) of screened children whose highest blood lead specimen fell within the category is shown. Blood lead levels in the 10-24 µg/dL category are considered elevated and blood lead levels ≥25 µg/dL signify lead poisoning.
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Alhia Harris October 18‚ 2011 Biology Lab report Proteins are very important throughout the body. They have a lot of functions in cells. Antibodies are proteins that help cells rebuild the cells when they are destroyed. Transport proteins move substances from one place to another. Regulatory proteins control cellular metabolism in a way that cells throughout the body can have the right amount of glucose in the blood. A common protein is an enzyme; in cells they speed up chemical reactions. For
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