samples or groups. Groups are dependent or related because they were matched as part of the design to ensure similarities between the two groups and thus reduce the effect of extraneous variables. For example‚ two groups might be matched on gender so an equal number of males and females are in each group‚ thus reducing the extraneous effect of gender on the study results. The researcher’s decision to match groups is determined by the study being conducted and is detailed in the study design. In previous
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Effects of Activators and Ethanol on Fermentation Rates In this lab we examined how the rate of fermentation is influenced by the type of substrate‚ and activators and inhibitors. We used four fermentation tubes in which we separately combined yeast with MgSO4‚ pyruvate‚ ethanol‚ and glucose. At five minute intervals we recorded the volume of gas produced in each fermentation tube. Our results are displayed in the graph. Our results supported the prediction that pyruvate is an activator
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The Effect of Varying Temperatures to the Rate of Respiration of Bufo marinus Statement of the problem: At which environmental temperature‚ do toads have the highest respiration rate? Most animals obtain oxygen‚ which comprise 21% of the air‚ from the environment. Oxygen combines with hemoglobin of the blood to form oxyhemoglobin. Oxyhemoglobin is transported to the tissues where oxygen is released and used for the metabolic functions of the animal. The functions produce waste materials‚ such
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exercising to entertain them selves. This directly affects the large number of obese children in our country today because of the lack of physical exercise. It is not that we want our kids to look a certain way or to be better at sports than everyone else‚ but it is that we want our kids to be physically fit and to develop a healthy lifestyle. Physical exercise is not only for adults‚ it is for children as well‚ so we must understand the importance of our children exercising and the benefits from it.
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English 101 Mr. B 17 March 2013 Do you exercise? Obviously exercise is important and has many benefits. When the word exercise is mentioned‚ what comes to mind? Some people believe that exercise is more of a health and heart thing. Some believe exercise is more for appearance and the way one looks. While others believe exercise is for psychological reasons. Exercising is important for a lot of things dealing with the body. Most all benefits of exercise are helpful for the body and health.
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WHY YOU SHOULD EXERCISE!! Obesity has reached epidemic proportions globally‚ with at least 2.8 million people dying each year as a result of being overweight or obese. No matter what your size or shape‚ being active is very important because: • Makes you feel better. • Helps you fall asleep and sleep well. • Gives you more energy. • Helps you think better and faster. • Helps you handle stress. • Makes you healthier. • Helps you live longer. Your heart will thank you The more active
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The Effect of the Concentration of Sulphuric Acid on the Reaction Rate with Magnesium Sarah Cain SCH 4UB Mr. Lankin April 1‚ 2009 Introduction The nature of the problem is to design an investigation that examines a variable affecting the reaction rate. In this experiment‚ magnesium will be reacted with different concentrations of sulphuric acid. The reaction is shown by the following chemical equation: H2SO4 (l) + Mg (s) → MgSO4 (aq) + H2
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Evaluation Like any experiment‚ there were a number of potential errors during the procedure of the experiment. Errors could have arisen as a result of the uncertainties associated with the instruments I used to take measurements‚ and also as a result of errors associated with the actual method. Of course‚ due to the limitations of the procedure‚ they could not be eliminated completely‚ so I will explain what I did to reduce them to an acceptable level and how I could have improved my method to
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Stephanie Owens UNV 104 July 20‚ 2012 Kevin Salcido Exercise and Obesity Making the decision to exercise can be life changing. There are different kinds of programs that will benefit to stay in shape. By doing these programs everyone can rest assure that they will become fit and healthy. Working out and eating healthy will benefit the lifestyles for everyone and everyone will win. It is important that children and adults exercise everyday so that they can stay in shape and not become obese
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TVM Exercises Be sure to use the following format for your answers: TVM Table (X%‚ Xn) Pmt (factor) Answer 1. You invest $5‚000 at 6% compounded annually for 10 years. How much will you have at the end of year 10? FV Table (6%‚ 10n) $5‚000 (1.791) $8‚955 2. You need $200‚000 10 years from now and know of an investment that pays a 10% return. How much do you need to invest today to achieve your goal? PV Table (10%‚ 10n) $200‚000 (0.386) $77‚200 3. You are required to
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