Test Tube essay topics
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Control Tube
678 wordsIntroduction: Respiration commonly known as the inhalation and exhaling or breathing has a more little known definition. This is the definition that involves the cellular level of eukaryotic cells. Cellular respiration may best be described by the following equation: C 6 h 1206+602-6 CO 2+6 H 20+36 ATP. ATP that is the energy needed for a cell to function as part of cellular respiration. ATP is needed to power the cell processes. If cells are denied energy they will die. The second law of therma...
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Tubes After 5 Minutes
1,451 wordsLab Report 1 Principles of Biology 1 (BIOL 100) Fall 2001 Gerard Chretien Living cells perform a multitude of chemical reactions very rapidly because of the participation of enzymes. Enzymes are biological catalysts, compounds that speed up a chemical reaction without being used up or altered in the reaction. The material with which the catalysts reacts, called the substrate, is modified during the reaction to form a new product. But because the enzyme itself emerges from the reaction unchanged ...
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Wrong With Britain's Test Tube Baby
494 wordsEngland's Test-Tube Baby The first baby to be conceived outside of it's mother promises to usher in a new and maybe, a revolutionary era of human reproduction. In July, Lesley Brown was getting close to delivery. This was said to be the world's first test-tube baby at the Oldham and District General Hospital, 190 miles outside of London. The infant was created when the egg of the mother was joined with the father's sperm in a special culture medium prepared by gynecologist Patrick Steptoe of Old...
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Dough Mound With Yeast
998 wordsBiology Lab Report Investigating Alcoholic Fermentation and the Affects of Yeast on Dough Aim: The aim was simply to investigate whether or not yeast had any affect on causing dough to rise when baked and to experiment with alcoholic fermentation e.g. to see if it gave off carbon dioxide. Introduction: Following a few weeks of fermentation theory, groups of three to four were assigned and told to conduct a series of experiments involving the affects of fermentation. My group consisted of myself,...
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Flame From A Bunsen Burner
1,092 wordsClasses of Chemical Reactions Whenever a reaction takes place, energy is changed as well when the substances react chemically. Scientists have taken these changes in energy and generalized them. Scientists can take these generalizations and discover more about the nature and tendencies of matter. In this lab, the purpose was to perform seven reactions, write down their equations, and identify the type of reaction. In this lab report, several methods of displaying this information will be applied...
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Ksp Value For His Experiment
586 wordsWhen ionic solids dissolve, they divide to give their positive and negative ions that make up the solids. These ions become hydrates and have the same relative proportions when in solution and when solid. The more the solid dissolves, the more the ion's concentration increases. This increase and build-up allows for the reverse reaction to occur. In this phase of the reaction the ions crystal lise out in order for the reaction to have a greater chance of occurring. Eventually the rate of dissolvi...
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Filtered Solution
293 wordsPurifying Acetanilide by Recrystallization Four test tubes of 13 x 100 were obtained and labeled "Acetone", "Water", "Ethanol", and "Petroleum Ether". Approximately 100 mg of Acetanilide and 2.0 ml of appropriate solvent were added in each test tube. The test tubes were stirred thoroughly. After stirring, it was observed that in which solvent acetanilide is insoluble at room temperature. The insoluble test tubes were heated to boiling using the sand bath and were cooled to room temperature. Late...
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Physical Properties And The Chemical Changes
1,068 wordsAbstract: This lab assignment is to observe certain substances and observe its physical and chemical changes in different environmental conditions. We first observed its physical properties, such as physical state and color and recorded it on paper. Then we did different types of experiments on some of the substances and observed the chemical changes. Some of the chemical changes where endothermic, exothermic, changes in color and changing of its physical state. We recorded the observations. Int...
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Set Up The Fermentation Tubes
1,041 wordsFermentation InvestigationPlanningAs a culture of yeast is merged with solution of sugar, a reaction called fermentation occurs. As products, ethanol and carbon dioxide are produced, in form of liquid and gas respectively. The reaction follows this equation: Glucose solution + Yeast Carbon dioxide + Ethanol + (Energy) And as one of the products is in the form of gas, the volume of the product can be measured to demonstrate the difference of the reaction when certain factors are changed. In the o...
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Colour Of The Test Tube Effects
435 wordsDoes the Colour of a Liquid Effect How Fast it Cools? I am trying to find out if the colour of a liquid effects how quickly it cools down. Method: 1. First I took five test tubes and filled each one with 5 ml of black, blue, green, red and 'clear' colouring (for the 'clear' colouring I simply used water.) 2. I then filled each of the test tubes with 25 ml of boiling (of course whilst wearing safety goggles.) water and waited for the temperature to fall to 50^0 C and then measured the temperature...
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Blue Litmus In The Other Petri Dish
737 wordsWhat is the pH of the substance Controlled Comparison: During class, our instructor set up the same lab that we were doing with 2 solutions, both of which were known acidic or basic. He placed 2 ml of the known acid into 2 different test tubes, and 2 ml of the known acid into 2 different petri dishes. Then using forceps, he tested blue litmus paper in one petri dish, and red litmus paper in another. The blue litmus paper, after being dipped into the solution, turned red in reaction to the acidic...
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Research Into Enzymes For Biology Rennin Rennet
1,788 wordsResearch into Enzymes - For Biology Rennin Rennet, substance found in the gastric juices of young milk-drinking mammals. Rennet contains a milk-coagulating enzyme, called rennin or, the active principle of rennet preparations used in making cheese and junket. Rennet extracts are commercially prepared from the inner lining of the fourth stomach of calves. Enzymes Enzymes are large proteins that speed up chemical reactions. In their globular structure, one or more polypeptide chains twist and fold...
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Sudan IV Test
637 wordsThis lab used many test to determine which functional groups were present in certain substance. The Benedicts test was used to identify reducing sugars (glucose and fructose) based on their ability to reduce the Capri c ions to cuprous oxide at high pH. The Cuprous oxide is reddish orange in color when shown to be at high levels by the test, and greenish when at low levels. In both the onion juice and glucose solution the reducing sugar levels were very high, because the test came back dark oran...
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Nov 2 1 K Put In Folder
544 words1. Since the yeast undergoes break down of glucose and obtain energy under both aerobic and anaerobic conditions. When it occurs during anaerobic conditions the oxygen is not present in the reaction. Glucose is metabolized to form pyruvate, which, in turn, is converted to two waste products, CO 2 and ethanol (Dolphin 68). From this experiment's yeast fermentation the CO 2 and ethanol has been produced. When we add a drop of Iodoform to the 2.5 ml of test tubes distillates from the anaerobic cult...
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1 Ml Of 2 5 Naoh Solution
803 wordsAmino Acids Introduction This lab was done in order to detect the presence of amino acids. Amino acids are distinguished from other biomolecules because not only do they contain carbon, hydrogen and oxygen, but nitrogen as well. The Amine group (NH 2) is where the nitrogen is located. Amino acids contain two other groups, one is called the Carboxyl group (COOH) and the other is called the variable "R" group. The "R" group is what makes amino acids different from one another. All of these groups ...
