Compare the size of cheek cell and onion cell DCP: Introduction: In this experiment‚ Onion cells (Allium cepa) Cheek cells (Homo sapiens) were measured and compared. The aim of this experiment is to find out how both cells differ by comparing their size. Onion cells (Allium cepa) is plant cell and Cheek cells (Homo sapiens) is an animal cell. Hypothesis: The size of an animal cell (Homo sapiens) should be smaller than a plant cell (Allium cepa). Because a plant cell has cell wall which
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1 MARKET POTENTIAL ANALYSIS: A METHODOLOGY FOR ESTIMATING THE MARKET POTENTIAL FOR COMPUTERS AND OTHER INFORMATION TECHNOLOGIES Kenneth L. Kraemer and Jason Dedrick Center for Research on Information Technology and Organizations University of California‚ Irvine Irvine‚ CA 92697 May 1998 Working Paper: #ITR-149 This research was supported by grants from the U.S. National Science Foundation and IBM Global Services. 2 ABSTRACT This paper describes a methodology for estimating
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an electric light and a dark room becomes bright. Turn on a music player and sound comes through your headphones. In both situations‚ energy moves from one place to another; effect and reaction. The two different types of energy are kinetic and potential energy. Kinetic energy is the energy a moving object has because of its motion. The kinetic energy of a moving object depends on the object’s mass and its speed. The kinetic energy of a moving object can be calculated from this equation: Kinetic
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Introduction Molecules are constantly in motion due to thermal energy. Therefore‚ the molecules will move around and bump into each other. Because of this‚ molecules tend to spread out evenly into available space in a process called diffusion. Diffusion is the random process of molecules moving from areas of high concentration to low concentration‚ thus requiring no energy. Many of the substances that enter or leave the cell do so through diffusion. Osmosis‚ a type of diffusion‚ is the movement
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of the following? You correctly answered: c. autorhythmicity 2. Phase 2 of the cardiac action potential‚ when the calcium channels remain open and potassium channels are closed‚ is called the You correctly answered: a. plateau phase. 3. Which of the following is true of the cardiac action potential? You correctly answered: b. The cardiac action potential is longer than the skeletal muscle action potential. 4. The main anatomical difference between the frog heart and the human heart is that the frog
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Resting potential is created by a transport protein called the sodium-potassium pump. Resting potential occurs when ions are distributed unequally on the inside and outside of cells‚ and when cell membranes are selectively permeable to different ions. K+ is particularly important for the resting potential. The membrane is highly permeable to K+. In addition‚ the inside of the cell has a high concentration of K+ and the outside of the cell has a low concentration of K+. K+ will naturally diffuse
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The importance of job descriptions is that it helps potential candidates to know what is expected of them and how they will be evaluated within the interview process. With job descriptions it can be of great value to employers as it helps them to relate potential candidates back to the job role and see if they fit well with the description of the ideal candidate they are looking for. Job descriptions are very useful for both Tesco and the potential candidates who are applying for the vacancy as it
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Market Potential Indicator Purpose of Indicator As the name states‚ it is a measure of the market potential of a country using several dimensions‚ ratings‚ indexes and percentages. Currently‚ emerging economies comprise more than half of the world’s population‚ account for a large share of world output and have very high growth rates‚ which mean an enormous market potential. With global marketing becoming more important‚ companies and marketers are attempting to determine which international
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685N and your belongings have a weight of 915N. How much work does the elevator do in lifting you and your belongings 5 stories (15.2m)? Solution: W= (685N+915N) (15.2m) W= (1600N) (15.2m) W= 24‚320Nm or J Section 2 Gravitational Potential Energy: 6. A 0.15kg ball is thrown 9.0m straight up. What is the work done by the gravitational force? And what is the change in PE? (Notice anything?) Solution: PE= m*a*h PE= (0.15kg) (9.8 m/s^2) (9.0) PE= 13.23 kg m^2/s^2 or J - The
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Resting membrane potentials Definition: Large nerve fibers when not transmitting nerve signals is about 90 millivolt. That is‚ the potential inside the fiber is 90 millivolts more negative than the potential in the extracellular fluid on the outside of the fiber. The Na+-k+ pump also causes large concentration gradients for sodium and potassium across the resting nerve membrane. These gradients are the following: Sodium ( outside): 142 mEq/L Sodium ( inside): 14 mEq/L Potassium ( outside):
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