ECET 110 Week 3 Homework 10/23/2012 Chapter 7 1) Which elements of the networks in Fig. 7.60 are in series? Which are in parallel? As a check on your assumptions‚ be sure that the elements in series have the same current and that the elements in parallel have the same voltage. Restrict your decisions to single elements‚ not combinations of elements. (a)R1‚ R2‚ and E are in series; R3‚ R4‚ and R5 are parallel. (b)E and R1 are in series; R2‚ R3‚ and R4 are parallel. (c)E and R1 are in series;
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of the cell membrane with the correct terms integral proteins‚ channel proteins and bilipid construction. Your last paragraph was very detailed with great information about the cell membrane‚ you stated “ The cell membrane is very thin and fragile‚ and it contains two different types of proteins. “Integral proteins are part of the membrane structure and cannot be removed without damaging or destroying the membrane. Peripheral proteins are bound to the inner or outer surface of the membrane and are
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Investigate the effect of temperature on amylase activity Introduction Amylase is an enzyme that catalyses the breakdown of starch into sugars. Amylases are found in almost all plants‚ animals and microorganisms. Large amounts of amylase occur in germinating cereals‚ and in the pancreas and saliva of higher animals. Aim The aim of this experiment is to find out the rate of reaction between amylase and starch in a range of different reaction temperatures. Hypothesis As the reaction
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them is usually only dared to hold hands while the age of 15 years on they are brave to the lip of 22.2 percent and 20-24 will be more courageous to have sex. start with sex‚ then a lot of negative effects that we see the youth in Malaysia and many other party is required to solve this problem. the effects of sex among remja is pregnant out of wedlock children. when problems arise‚ at a young age they will take the easy way to remove the baby to various places as examples of waste‚ drains‚ etc. such
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meter (N/m2)‚ or pascals (Pa). 3. Slowly drag the temperature (T) slider back and forth. (Note: In this Gizmo‚ the Kelvin scale is used to measure temperature. On the Kelvin scale‚ 0 degrees is absolute zero‚ the coldest possible temperature. Absolute zero is equal to -273.15 °C or -459.67 °F) A. How does the change in temperature affect the speed of the molecules? __If the temperature is colder the molecules move slower and if the temperature is hotter the molecules move faster.
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Effect of Temperature on Content of Vitamin C Introduction A daily intake of Vitamin C is essential for humans. Without it‚ the disease scurvy develops as sailors‚ explorers and people during the long winters in the Northern hemisphere found before the time of Captain Cook. The British Navy started giving sailors lime juice to prevent scurvy on long voyages in 1795. Vitamin C is found in high levels in foods such as oranges‚ limes‚ lemons‚ blackcurrants‚ parsley and capsicums. Vitamin C is water
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An investigation into the effects of temperature on enzyme action An enzyme is a biological catalyst that speeds up the rate of reaction in certain biological functions. They play a vital role in many aspects of human physiology and are necessary for the functioning of a number of systems‚ for example in the digestive system to help to break down food. All enzymes have a unique active site that can fit on to a particular molecular arrangement on a target substrate; a substance e.g. carbohydrate
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"Integrity without knowledge is weak and useless‚ and knowledge without integrity is dangerous and dreadful"‚ quoted Samuel Johnson. Integrity in the eyes of a teenager means not cheating in class‚ obeying and respecting school rules‚ and finishing and completing anything assigned in school. When in class‚ teenagers have plenty of opportunities to cheat during tests‚ quizzes and other assignments. Integrity means not taking advantage of these opportunities and being honest towards yourself and
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Radiation Exposure Do you know much radiation you are exposed to everyday? Many people are not aware of the radiation levels around them on a daily basis. I believe that exposure to radiation should be minimal. I think protection and prevention is vital. Being aware of the health risks and what can be done to protect yourself should be a well known piece of knowledge. If followed‚ this knowledge can help reduce radiation exposure levels. Exposure to radiation is higher today than it has ever
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Biology 113 Review sheet Chapter 2: * What is a compound and how is it different than an element? Compound is more than one element. An element cannot be broken down by chem. Rxns. * What are the 4 main elements of life? Why? C‚H‚O‚N they make up 96% of living matter and they are found in all of the major macromolecules * Be able to calculate the number of protons‚ neutrons and electrons given an element’s mass number or atomic number. If given this symbol - 4He – can you tell
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