The Effect of pH on Enzymatic Reaction Rate Abstract Enzymes are affected by changes in pH. The most favorable pH value— the point where the enzyme is most active—is known as the optimum pH. This experiment was conducted to determine the effect of pH reaction rate on an enzyme‚ catalase‚ from yeast. The experimental results indicate that the catalase worked best at a neutral pH level of seven (7). Introduction An enzyme is a protein molecule that serves as a catalyst. “The basic function of
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Assignment #2: Global Crime Rate Comparative Criminal Justice-CRJ330 Sharita L. Riddick Strayer University Professor Susan Wind April 28‚ 2013 When it comes to any type of crime it is just not a good picture to paint. All across the nation crime is a worldwide problem that directly indirectly touches every one of us in multiple ways: as victims‚ in paying higher prices for products and services‚ and in living with the consequences of fear and corruption. The primary reason to understand
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Obesity rates are clearly on the rise in the USA.One of the populations most affected by that is adolescents. For this discussion‚ I would like for you to describe why you think we are seeing such a dramatic increase. Be sure to include nutrition in your discussion. Also‚ what role do you feel parents play in adolescent nutrition? Can you "make" a 14 year old eat their broccoli? Who is ultimately at fault? Society? Parents? Food manufacturers? Please use at least one source in your original post
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customers’ needs anymore. So‚ our company has designed a brand new promotional gift. It can best suit our clients’ needs and lifestyles. This is – a heart rate watch. First of all‚ if you look at this paper‚ you can see that this watch has a function that has never been designed for before – a heart rate monitor. It enables the users to measure their heart rate while doing exercises. Actually‚ the underlying purpose of this design is to immerse into customers’ daily lives. Let’s imagine that‚ when you are
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Accounting rate of return The accounting rate of return (ARR) is a way of comparing the profits you expect to make from an investment to the amount you need to invest. The ARR is normally calculated as the average annual profit you expect over the life of an investment project‚ compared with the average amount of capital invested. For example‚ if a project requires an average investment of £100‚000 and is expected to produce an average annual profit of £15‚000‚ the ARR would be 15 per cent. The
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conductors - low value for current passing Strong bases : group 1 hydroxides (ie NaOH etc)‚ or lower group 2 hydroxides Ba(OH)2. - good conductors Weak bases : NH3‚ CH3CH2NH2. - poor conductors Reaction rates Similarly‚ the rate of reaction will reveal the strength of an acid. The rate of a chemical reaction is usually proportional to the concentration of the reactants. As it is the hydrogen ions that
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Why is the Divorce Rate So High? Intro to Sociology April 25‚ 2006 A question that has been plaguing sociologists for years is the issue of high divorce rates. Since the 80’s there has been an extremely high rate of divorce in our country. In statistics I found from 2004 the percentage of divorce was at 47(NCHS). This question has been studied vigorously‚ sociologist have looked in every direction for one solid reason that our divorce rate is so high‚ even compared to other developed countries
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rock are removed from the Earth’s surface by natural processes such as wind or water flow‚ and then transported and deposited in other locations. While erosion is a natural process‚ human activities have dramatically increased (by 10-40 times) the rate at which erosion is occurring globally. Excessive erosion causes problems such as desertification‚ decreases in agricultural productivity due to land degradation‚ sedimentation of waterways‚ and ecological collapse due to loss of the nutrient rich
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higher education system; but it is estimated that 40% of college students will leave higher education without getting a degree and 75% percent of these students will leave within their first two years of college. (Gayla. 1) The dropout rate for college students is overwhelmingly high‚ and there are three major reasons behind it. Many college students run into financial problems‚ the estimated cost for tuition for a 4 year school is $35‚000; (College Costs - Average College
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