In early 2003‚ Boeing released plans to build a new “super efficient” jet called the 7E7. The jet subsequently gained the nickname the “Dreamliner.” In the six months following the announcement news depressed the market for aircraft‚ which was already shrinking. This news included the United States going to war with Iraq‚ global terrorist attacks‚ and SARS putting travelers in fear. This all contributed to the worst airline profits in a generation. From Boeing’s perspective this meant for a
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and outer tangential walls. Lacunar Collenchyma Lacunar collenchyma consist thickening around the cell walls facing the cavity lumen or intracellular spaces. Sclerenchyma tissue is composed of cells with rigid cell walls and they function to support the weight of a plant organ. The main function is as supporting tissues that withstands various strains resulting from stretching and bending which makes the plant elastics. There are two types of sclerenchyma cells which are fibers andsclereids. They
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affect the rate of enzymes reactions. One of them is pH‚ which influence on the enzyme activity will be the subject of this investigation. Catalase of potato tuber cells will be the enzyme used in the experiment. RESEARCH QUESTIONWhat is the influence of different values of pH on the activity of catalase in potato tuber cells?VARIABLESIndependent: potato discs treatment (placing them into buffer solutions of different pH values‚ mixed with hydrogen peroxide)Dependent: the activity of the catalase‚ reflected
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Osmosis using potato cores and sucrose solution 1.0 Abstract This experiment’s ultimate goal is to find the water potential of the potato cell. This was achieved through placing potato cores in different concentrations of sucrose (0.2%‚ 0.4%‚ 0.6%‚ 0.8%‚ 1.0%‚ 2.0%‚ 3.0% and 4.0%) solution and to observe how much water was gained or lost through osmosis to reach a prediction of the concentration within the potato cell. The results displayed that the concentration of sucrose within the potato cell is
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best way for people to grow economy.I mean harmony between people and nature is extreme important. If we be nice to the nature‚ so does it. So people need to not only work hard to get money but do not destroy our environment as well. If people do not change their way to be rich‚ they will pay for their mistakes Stay hungry‚ stay foolish " Stay hungry‚ stay foolish" was said by Steven Jobs in the speech for the Stanford graduated students‚ which I saw it in my TOEFL class
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Potato Enzyme Lab INTRODUCTION An enzyme is a protein that speeds up or slows down a specific chemical reaction in an organism. A good rule of thumb is to remember that enzyme names end in “-ase”. This will help in identifying enzymes in further readings. Generally enzymes are catalysts. Hydrogen peroxide is a toxic chemical that is produced in many organisms during metabolism. Organisms must get rid of this toxin to survive. One reaction turns the hydrogen peroxide into water and oxygen. The
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Biology GCSE Coursework: Osmosis in Potato Chips Skill Area P: Planning Aim: To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size. Hypothesis: Osmosis is defined as the net movement of water or any other solution’s molecules from a region in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a partially
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The “Couch Potato” Lifestyle “Couch potato”‚ a slang term to describe a person who spends most of the time sitting or lying on a couch. However‚ sedentary lifestyle is another term which commonly used as a medical term to describe a lifestyle with irregular psychical activities or exercise. People intend to spend more time sitting‚ surfing the internet‚ working on a computer‚ watching television‚ and other activities that do not require much psychical movement or activities. Hence‚ this lifestyle
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have the same volume as the original model. Q1. Use a piece of A4 paper to make a box with a length of 10cm and a width of 3cm. Then find the volume of the box and the total surface area of the paper used to make the box. T.S.A: 5 rectangles and 4 squares 5 x L x W + 4W = 5 x 10 x 3 + 4 x 9 = 186cm Volume: 5 rectangles and 4 squares L x W x H = 10 x 3 x 3 = 90cm Q2. Make another box with the same general shape‚ but chose a different length and width. Then find the volume of the box and
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1."Why is expected return considered forward-looking? What are the challenges for practitioners to utilize expected return?" (Cornett‚ Adair‚ and Nofsinger‚ 2012‚ p. 246). Expected return is “forward-looking” in the sense that it represents the return investors expect to receive in the future as compensation for the market risk taken. The challenge is that practitioners cannot precisely know what the future holds and thus what the expected return should be. Thus‚ we create methods to estimate the
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