Introduction In this experiment I aim to find out if caffeine has an effect on the heart rate of daphnia. Daphnia are water fleas that have a sort of heart that we can see in magnification. We can count the number of heart beats in a minute of a regular daphnia and try and get a new one with the same specifications as the old one that may have died. It is also a good idea to get a new one as we want to see how much it affects it from ordinary instead of adding the caffeine one after another
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Abstract Over a two week period of time in the laboratory‚ we experimented and tested the reaction rate of a peroxidase enzyme and the factors that affected it‚ both positively and negatively. The purpose of these experiments was to probe and manipulate the activity of the enzyme peroxidase by varying temperature‚ pH‚ the amount of enzyme compared to the substrate and the effect of hydroxylamine. Peroxidase activity is expressed when the potato extract is subjected to stresses such as low temperature
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Several priming experiment were discussed‚ and the results were astonishing. One of the experiment was‚ students were asked to walk down a corridor to their professor’s office and take the “scrambled sentence test.” Throughout the test‚ words like “worried”‚ “Florida‚” “old‚” “lonely‚” “gray‚” “bingo‚” and
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Practical Investigation: The Simple Pendulum Background The period of a pendulum is the time for one complete swing. The equation for the period of a pendulum is; Aim To investigate the factors which affect the period of oscillation of a simple pendulum. Equipment -Stand & Clamp -1 Meter Ruler -Pendulum Bob -Nylon
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Plasma Complexity! Plasma is said to a substance similar to gas in which a certain portion of the particles are ionized. The basic premise is that heating a gas dissociates its molecular bonds‚ rendering it into its constituent atoms. Further heating leads ionization‚ turning it into plasma: containing charged particles‚ positive ions and negative electrons. The presence of a non-negligible number of charge carriers makes the plasma electrically conductive so that it responds strongly to electromagnetic
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FOREIGN PHYSICIST Alessandro Volta AUTOBIOGRAPHY Inventor: Alessandro Giuseppe Antonio Anastasio Volta Criteria: First to invent. Birth: February 18‚ 1745.in Como‚ Lombardy‚ Italy Death: March 5‚ 1827.near Como‚ Lombardy‚ Italy Nationality: Italian Invention: electric battery in 1800 Volta called his battery the Voltaic Pile. He stacked alternating layers of zinc‚ cardboard soaked in salt water and silver‚ image courtesy BBC Rough Science Function: noun / electric bat•tery
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|Chemistry Review 1 |TEACHER ANSWER KEY | | |June 06‚ 2011 | | | |’see explanation below’
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Module Five: Text Questions Review Questions 1. What is communication? How does communicating relate to parenting? Communication is "any sharing of meaning between two or more people. Communication relates to parenting because it helps parents guide and understand their children better. 1. 2. How can financial issues affect parenting? Financial issues can affect parenting by not having ’family time" because you are trying to get more money by working more often‚ the parents
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Equations Reducible to Quadratic Equations Exercise 4.2 Solve the following equations: 1. x 4 − 6 x 2 + 8 = 0 Solution: x4 − 6 x2 + 8 = 0 Let y = x 2 and y 2 = x 4 The above equation becomes: y 2 − 6 y + 8 = 0 y2 − 6 y + 8 = 0 y2 − 4 y − 2 y + 8 = 0 y ( y − 4) − 2( y − 4) = 0 ( y − 2)( y − 4) = 0 y − 2 = 0 and y − 4 = 0 y=2 y=4 2 As‚ y = x x2 = 2 x2 = 4 x = ±2 x=± 2 solution set = { 2‚ − 2‚ 2‚ −2} 2. x −2 − 10 = 3 x−1 Solution: x −2 − 10 = 3 x −1 x −2 − 3 x −1 − 10 = 0 Let
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Name __________________ Balloons and Buoyancy Simulation Go to HYPERLINK "http://phet.colorado.edu/simulations/sims.php?sim=Balloons_and_Buoyancy" http://phet.colorado.edu/simulations/sims.php?sim=Balloons_and_Buoyancy and click on Run Now. Determine what factors make a hot air balloon or a helium balloon float Student Instructions: 1. Why does a hot air balloon float even though it is so heavy? Hot air balloons float because the buoyancy force of the hot air is more that the
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