Yeast and Sugar - The Chemistry must be right Jansen‚ C. Gymnasium Felisenum‚ The Netherlands 14-04-2010 Summary Yeast can metabolize sugar in two ways‚ aerobically‚ with the aid of oxygen‚ or anaerobically‚ without oxygen. In this experiment yeast ferment sugars anaerobically. When yeast ferments the sugars anaerobically‚ however‚ CO2 production will cause a change in the weight of the sugar/yeast-solution. This raises a further question: What is the effect of different kinds of sugars
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Lab Report: How Temperature affects Reaction Rate Aim: The Aim is to investigate how temperature can affect Reaction Rate. The experiment will be performed by heating equally sized and weighted lime stones with equal amounts and concentration of Hydrochloric acid at different temperatures. The temperatures will be 35˚C and 40˚C. We will measure the reaction rates by observing gas release of the reaction between lime stones and Hydrochloric acid. The amount of gas release at different
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of Carbohydrates: Monosaccharides‚ Disaccharides‚ Polysaccharides Carbohydrates are molecules that are synthesized from carbon‚ oxygen‚ and hydrogen atoms. Some types of carbohydrates consist of a single unit consisting of a few atoms‚ while other carbohydrates consists of thousands of units linked together through chemical bonds. Glucose‚ maltose‚ and glycogen are three carbohydrates that are similar‚ but structurally different. Carbohydrates have the general molecular formula CH2O. Starch and
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What are Carbohydrates? Carbohydrates are the sugars‚ starches‚ and fibers found in fruits‚ grains‚ vegetables and milk products. Carbohydrates are sugars that break down inside the body to create glucose. Glucose is moved around the body in the blood and is the primary source of energy for the brain‚ muscles‚ and other essential cells. There are two types of carbohydrates‚ simple and complex; Simple carbohydrates refer to sugars with a simple molecular construction of one or two parts. Because
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Carbohydrate presentation: SCI 241 Sovanna Ath What is Carbohydrate? * Source of energy * Effects of too much carbohydrates A CARBOHYDRATE IS the ideal source where your body get your energy from. Even though carbohydrates are good for your body too much of it can upset the delicate balance of your body’s blood sugar level which can result in fluctuation in energy and mood that leave you feeling irritated and even tired. It is also better for your body to have a balance of carbohydrates
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you will see in the gizmo. Vocabulary: carbohydrate‚ disaccharide‚ lipid‚ monosaccharide‚ polysaccharide‚ protein‚ starch As you go through this gizmo‚ think about the major nutrients we get from our food and how these nutrients are used by your body. For example‚ you learned in your lesson that carbohydrates (simple sugars and starch) come from foods like pasta‚ bread‚ grains‚ and are used by our bodies for short-term energy. When we eat carbohydrates‚ our bodies break them down to make energy
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Krupa Desai Cell Biology April 3‚ 2013 Lab: Biosynthesis of Starch Introduction: In this lab we learned the concept and procedure of synthesizing starch. We also learned the effects of pH and temperature on the reaction rates of amylase.. In the process of the synthesis lab we learned phosphorylation using a potato‚ which was what we synthesized. The phosphorylation took place after the addition of primer. There are two different types of starches used are amylose and amylopectin. To test
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In class we decided that the rate of a reaction increases when there are more collisions or when the activation energy is reduced. We then determined that there were four ways to increase the reaction rate: increase temperature‚ add a catalyst‚ increase surface area‚ and increase the concentration of reactants. The objective of this lab was to experimentally show how temperature and surface area impact the rate of reaction‚ so only two of these methods were tested. The evidence indicates that increasing
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Starch From Wikipedia‚ the free encyclopedia Starch Identifiers CAS number 9005-25-8 EC-number 232-679-6 RTECS number GM5090000 Properties Molecular formula variable Molar mass variable Appearance white powder Density 1.5 g/cm3 Melting point decomp. Solubility in water none Hazards MSDS ICSC 1553 EU Index not listed Autoignition temperature 410 °C (verify) (what is: / ?) Except where noted otherwise‚ data are given for materials in their standard state
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Americans today tend to believe that cell phones are bringing people together‚ however‚ I seem to believe that cell phones are causing people to disconnect emotionally and verbally. In discussion of the cell phone‚ one controversial issue has been that there is an over obsessive use of the cell phone. On the one hand‚ argues that it is helpful to--- communicate‚ research‚ and distract yourself with videos. On the other hand‚ people say that people contends to lose communication skills. Other even
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