Design Experiment: Enzyme Inhibitors. Research question: What is the effect of adding lead nitrate solution on the activity of amylase enzyme? Aim: To test the effect of adding nitrate solution on the activity of amylase. Background Information: Inhibitors are molecules which repress or prevent another molecule from engaging in a reaction. They are substances that attach themselves onto an enzyme and reduce or prevent the enzyme’s ability to catalyse reactions. Competitive Inhibitors are inhibitors
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Experiment Plan By: Ashley Project Question: What size of bouncy ball bounces the highest‚ small‚ medium‚ or large? * I predict the following will happen (my hypothesis): I predict that the smallest ball will bounce the highest since it is the lightest. | * Independent Variable: I will be changing the ball size. * Dependent Variable: The height of the bounce. * Controlled Variable: The height that I will drop the balls at. | The materials and amounts of each that is
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750 | 0.47 | 0.55 | 0.51 | 0.54 | 0.53 | 0.54 | 1000 | 0.58 | 0.56 | 0.57 | 0.52 | 0.54 | 0.53 | Results Results The results do not show the general relationship between light intensity and photosynthesis that could normally be seen had the experiment taken place without errors. The graph should show an increase in arbitrary units the further away from the light source the beaker is because the greater the distance from the light source‚ the lower the light intensity and so less photosynthesis
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know are those we see (no “truth”) theory Systematic explanation for the observations that relate to a particular aspect of life; describe relationships we might logically expect between variables Independent variable Cause Dependent variable Effect‚ depending on another Idiographic explanation Idio = unique; full explanation; limited to a single case Nomothetic explanation Explains a class of situations using only one/a few explanatory factors; partial explanation induction From specific
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in order to survive‚ which‚ consequently‚ begets violence. This is evident in the history of warfare that follows humanity. My interests lie in the psychology of tribalism and how influential it is in modern society. The experiment I wish to conduct on this
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1. What is the retention time for caffeine? Retention time for caffeine : 4.149+4.142+4.152+4.1454 = 4.15 2. What is the retention time for benzoic acid? Retention time for caffeine : 2.651+2.817+2.857+2.9274 = 2.81 3. How are the retention times for caffeine and benzoic acid related to their chemical structure and the nature of the chromatographic system? The retention time of caffeine and benzoic are related due to the
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Heart disease‚ stroke‚ cancer‚ diabetes‚ and arthritis are the most common‚ costly‚ and preventable chronic diseases in the United States. Seventy percent of the total deaths in the U.S. are attributed to chronic diseases and fifty percent of that deaths are due to heart disease and stroke. Total expenditure for treatment of chronic diseases is $277 billion (Chronic Diseases and Health Promotion‚ 2012). Disease management is the key factor in managing these chronic conditions and improving the quality
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Topic: Osmosis Materials: Potato cylinders‚ 20 percent sodium chloride solution‚ three test-tubes‚ test-tube rack‚ scalpel blade‚ Gel ink pen‚ syringe-10cm^3‚ Plastic ruler with mm‚ tile‚ forceps filter paper‚ Masking tape. Method: 1) Three test-tubes‚ A‚ B and C were labeled and initials of experimenters were applied with the date: January 29‚ 2013. 2) A syringe was used to put 10cm^3 of water in tube A and 5cm^3 in tube B along with 5cm^ 20 percent sodium chloride solution and 10cm^3 20 percent
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essay aims to find out coffee’s beneficial effects on human body.coffee is one of the most popular beverages in the world‚ more and more populations all over the world love to begin their day with a cup of coffee.Almost a third of the world’s people drinks coffee. But coffee was not recognized a healthy drink. It has a history of being blamed for many disease.Coffee can stimulants parts of the human body‚ such as heart and muscles because of its caffeine content.Caffeine is a natural stimulant existent
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float. Any object with density more than that will sink. Carbon dioxide‚ or CO2‚ also played a big role in this experiment. Many soft drinks contain CO2. Studies show that Sierra Mist had the most carbonation out of most soft drinks. There was a lot of carbon dioxide in the soda. That was the reason the raisins would float up and down. There were many purposes to this experiment. One purpose was to teach us about density when we saw how the raisins floated to
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