reactants. The reaction rate is slower when the reactants are large and complex molecules because it takes longer for the molecules to combine together creating a chemical reaction. More than 2000 years ago‚ Democritus‚ who was a philosopher from Greece suggested that matter is made up of tiny particles too small to be seen. He thought that if you kept cutting a substance into smaller and smaller pieces‚ you would eventually come to the smallest possible particles. The rate of a chemical reaction
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The aspects of using tobacco are influenced and determined by individual factors such as self-image and perceptions‚ social factors such as the societal norms‚ environmental factors such as economics and advertising‚ the traditional use of tobacco as a cultural factor‚ acculturation alongside the historical context of the tobacco industry in different communities. Both the patterns and behaviors on the use of tobacco have led to the difficulties in both its measurement and study. Nevertheless‚ the
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temperature 32oC. Once the temperature was beyond the optimal level‚ the rate began to decline and this was represented by the concave curve on figure 5 and 7. This was because as the temperature increases‚ the frequency of collisions between the enzyme and the substrate also increased hence faster reaction rate. Whereas‚ the enzymes operated slowly at low temperature as there wasn’t sufficient energy for the substrates to move at a fast rate‚ hence decreased the number of collisions with the enzymes. However
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solutes (iodine + H2O) than did the starch solution. So iodine move into the cell and react with starch molecules to formed starchiodine‚ the blue compound‚ with a specific rate. The test show that mean rates of diffusion are significantly different acording to the concentration. So the concentration have an impact on the rate of diffusion. Also‚ the difference between the concentration in each compartment‚ concentration gradient. We see in the Fick law that if you modulate C1-C2 you will have
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Cause/Effect of health issue such as heart disease The easiest way to define cause and effect is “one thing leads to another”. The one thing is the cause that leads to (or results in) “another”‚ the effect. Although you can focus on one cause and effect‚ frequently you’ll find that a single cause generates many effects or that one effect is the result of multiple unrelated causes. Example: Smoking can cause heart disease‚ lung cancer‚ and emphysema or heart disease may be caused by smoking
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spectrophotometer at 605nm‚ and the rate of linear decrease in absorbance over time represents the number of electrons flowing through the electron transport chain reflecting the relative rate of photosynthesis. Chloroplasts only absorb certain wavelengths in the electromagnetic spectrum‚ the blue followed by the red are the two main wavelengths absorbed (Melis‚ et al.‚ 1987). The experiment was designed to investigate which wavelengths would result in the highest rate of photosynthesis. Chlorophyll a
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Biology Investigation Problem: How does light affect the rate of Photosynthesis? The Plan In my experiment I am going to see how light affects the rate of photosynthesis. To do this experiment I am going to set up the apparatus as shown in figure 1. The apparatus I am going to use are the following: - 1 Tripod 1 300ml Beaker 1 Boiling Tube 1 Clamp Stand 1Clamp 1 Boss 1 Ring Binder 1 Lamp 1 1 Metre Ruler 1 Thermometer 1 Stop Clock To do the experiment I will set up the apparatus first. I
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Name: ____________________ /35 How Does Temperature Affect Respiration Rates of Fish? Google the web site www.biologycorner.com/ and in the upper left corner search for “goldfish lab”. Select the fish temperature lab. Use the simulator to gather data. Contact 4 classmates and get their data. (or run the simulation 5 times yourself) Complete the table. Complete a graph using the average respiration rate vs time. Answer the questions. ** no additional report is needed** Introduction:
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example of a heart rate is called resting heart rate. The resting heart rate of the body is the number of contractions of the heart that occur in a single minute while the body is at complete rest. The resting heart rate can differentiate upon age‚ gender‚ and health of a human. There will also be a difference in number upon the resting heart rate of athletes and a non-athletes. I calculated 68 beats per minute for my resting heart rate. Another example of heart rate is target heart rate. Mathematically
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Effect of Varying Temperatures: The enzyme catalyzed reaction rate during varying incubation temperatures are plotted on Figure. 6. As the temperature increases the rate increases‚ but as the temperature reaches 49oC it begins to drop. When the plot of the logarithm of the rate is used against the inverse of the temperature kelvin’s the Arrhenius equation is used to calculate the activation energy. The range in orange is between 16.5 - 37oC and the activation energy is calculated to be 9332kcal/mol
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