Cockroaches and Hemolymph Concentration in the Body Abstract This lab was conducted to determine the concentration of hemolymph in the body of a cockroach. It was done by making serial dilutions to make a standard graph by injecting a dye into a cockroach and determining the concentration at different times with the use of a spectrophotometer to find the optical density which is measured in absorbance. Results showed that the concentration was not within the pre-experiment research range
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How sodium chloride concentration affects the germination‚ growth and development of Brassica rapa. Osumi‚ K.‚ Nihei‚ B.‚ Takanishi‚ K.‚ Nakamura‚ C.‚ Warehime‚ R. Period 2. 03/05/17 Introduction: To have a successful germination‚ the plant seed needs a sufficient amount of water and oxygen present. Other conditions include room temperature‚ and the amount of light intake. Hydration of a seed‚ is an essential step for seed germination (Martínez-Andújar‚ 2014). Plants tend to germinate better in
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Objective To determine soluble solid concentration in some fruits including tropical and temperate fruits by using handheld refractometer. Introduction “Sugar are the major soluble in fruits juices and estimate of sweetness. Other soluble materials include organic and amino acids‚ soluble pectins‚ and others. Soluble solid concentration can be determined in a small sample of fruits juice using a hand held refractometer. The measurement must be made at 20°C to get an accurate value. This instrument
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three different Substrate Concentrations (3%‚ 1% and 0.3%) as which one was the fastest to react‚ I hypothesized that the reaction would occur the fastest with the 3% hydrogen peroxide (the highest amount of concentration) because the higher the concentration the more faster the reaction occurs and helps produce or break up the enzyme. After testing all three of my substrate concentrations with 10 trials each‚ my data showed (first graph) that the 3% substrate concentration had the fastest average
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during the Holocaust was the concentration camps. Many people were affected by the reality of what was happening in Germany. Within Germany‚ there were types of camps that people could be sent to: concentration camps‚ labor camps‚ extermination camps and prisoner-of-war camps. Concentration camps were the Nazis’ way of imprisoning the Jews‚ political antagonists and other people deemed socially unacceptable of the country. If these people were sentenced to a concentration camp and did not arrive
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Title of Practical: The Effect of Concentration on Reaction Rate Aim: To use a simple reaction between sodium thiosulphate and hydrochloric acid to discover concentration this determines how fast chemical reactions occur. Independent Variable: Concentration of hydrochloric acid (%) Dependent Variable: Time taken for chemical reaction to take place (sec) Hypothesis: My prediction is that the increased concentration of the thiosulfate will in turn lead to an increase in the rate of reaction
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monosaccharide reducing sugar (Kolej Mara Banting – Students’ Handbook for Biology HL Year 1). It is the simplest form of carbohydrate. In this experiment‚ sulphuric acid‚ H2SO4 and potassium permanganate‚ KMnO4 is added into glucose with different concentration and the time taken for the purple pink colour of potassium permanganate solution to change to colourless is recorded. This is because glucose donates electrons to the permanganate ions‚ causing it to change colour (Kolej Mara Banting – Students’
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think of music‚ the first thing that comes to mind is probably not Nazi Concentration Camps. Most people think death‚ brutal‚ and inhumane when they think of concentration camps. Music does not seem like it would play a big part in a place where millions were brutally murdered day in and day out. This is why music in concentration camps is considered paradoxical; in other words contradicting. The music was paradoxical in concentration camps because music helped prisoners remember who they are and what
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Belzec Concentration Camp: Belzec was an extermination camp located in Southeastern Poland on the Lubin-Lvov railway line (“Belzec Death Camp” par. 1). The camp was built on November 1st‚ 1941 by the Germans for the sole purpose of slaughtering minority groups (“Belzec Concentration Camp: History & Overview” par. 1). The Jewish Virtual Library estimates that between 500‚000-600‚000 Jews were incarcerated and killed at Belzec (par. 1). The mass murders were executed with carbon monoxide gas that
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The term concentration camp refers to a place in which people are detained or confined‚ usually under harsh conditions and without regard to legal normality of arrest and imprisonment that were acceptable in a constitutional democracy. In Nazi Germany between 1941 and 1945‚ concentration camps were an integral feature of their government (from the Holocaust Encyclopedia at the United States Holocaust Memorial Museum). The main reason that Hitler and his Nazi Party sent Jewish people to the camps
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