or particles which are adhere to the electrode can be washed off with the distilled water. Secondly‚ after washing the electrode is wiped off by the soft tissue paper because the glass electrode is very sensitive. Also‚ the water can affect the concentration of the solution being measured which can also results in an error in the measurement. Q4. How is Vaisala probe calibrated? Ans. The Saturated salt solutions are used to calibrate the Vaisala probe. The results are transferred into the graph
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Effect of changes in substrate concentration on the reaction rate of an enzyme IB biology Internal Assessment 3/23/12 Research Question: Effect of changes in substrate concentration amount on the reaction rate of an enzyme Introduction: In this experiment‚ the substrate is hydrogen peroxide. The purpose of this investigation is to find out the relationship between the substrate concentration and the rate of reaction. Substrates are molecules that are acted upon by enzymes. For instance
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looking at the effects of alcohol consumption by college/university students‚ how it impairs the functioning of the human brain‚ the cognitive process of information and personality. I will be focusing on the parts of the brain that alcohol has effects on such as; cerebral cortex and the frontal lobes‚ the cerebellum‚ the hippocampus‚ the medulla and the hypothalamus‚ as well as how it affects personality (behavior) and intelligence and cognition. According to Clarren & Smith (1978) alcohol is depressant
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DCP & CE Title The effect of the different dilutions of yeast cell suspension on the number of yeast cells per cm3 that counted using haemocytometer under microscope. Aim To investigate the effect of the different dilutions of yeast cell suspension on the number of yeast cells per cm3 that counted using haemocytometer under microscope. Research Question Do the different dilutions of yeast cell suspension affect the number of yeast cells per cm3 that counted using haemocytometer under
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the use of alcohol has been an topic in need of explanation for many years. The concept will be explaned with emphise on the negative effects of hooch. Alcohol in cardio-sport athletes is especially harmful. But at any rate the negative concepts apply to all student. Besides the fact that a large number of students are underage when they drink‚ alcohol can put students in dangerous situations and give them a headache long after the hangover is gone. The short and long term effects alcohol has can impair
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differences in the rate of metabolism of a dried yeast culture with differing carbohydrate sources? In the current practical that was undertaken the growth rate of yeast (S. cerevisiae) with differing carbohydrates sources : Glucose (C6H12O6)‚ Fructose (C6H12O6)‚ Lactose (C12H22O11)‚ Xylitol “(CHOH)3(CH2OH)2” and Water (H2O) as a Control were observed. “ Yeast are single-celled fungi which consist of more than one thousand different species which have been identified. The most commonly used yeast is Saccharomyces
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Effects of Marijuana‚ Heroin and Alcohol. Contents Effects of Marijuana Effects of Heroin Effects of Alcohol Effects of Marijuana Marijuana is a combination of shredded leaves‚ stems and flower buds of the Cannabis sativa plant. Marijuana is the most commonly used illegal drug. Occasional marijuana use is rarely seriously harmful‚ but smoking pot has important medical effects. Physiological Effects of Marijuana The active ingredient in marijuana is THC. That ’s short for delta-9-tetrahydrocannabinol
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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 that
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Analyzing the effects of varying hydrogen peroxide (H2O2) concentrations on the volume of its drop Jonah Jemina IB Chemistry SL 11 Mr. Eastwood Analyzing the effects of varying hydrogen peroxide (H2O2) concentrations on the volume of its drop Jonah Jemina Introduction: Hydrogen peroxide is a clear and colourless substance that has a strong oxidizing characteristic. From the books‚ “Hydrogen Peroxide: Medical Miracle”[1995] by Douglass and “Applications of hydrogen
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The Effect of Concentration Gradient on Osmosis Abstract: Osmosis is the passive movement of water from an area of higher concentration to an area of lower concentration‚ usually across a membrane (Thorpe 2013). Tonicity is the ability of a solution surrounding a cell to gain or lose water (Reece 2011). There are many factors that affect the rate of osmosis. These include temperature‚ surface area‚ difference in water potential‚ pressure‚ light and dark and most importantly what we will be talking
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