Cell Biology Lab - Homework # Due the week of Feb 3rd This is NOT a lab group project. Do the work individually. You may use any source other than your fellow students. Show your work‚ use your own words and cite all references. 1. (14 points) The HeLa S3 cancer cell line is considered to be “continuous” due to acquired mutations that enable the cells to evade senescence. This property is one of several hallmark characteristics of cancer cell lines. Describe three hallmark characteristics
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To follow the approach of semi-custom‚ designer need a characterized library of standard cells e.g. logic gates‚ data buses‚ sequential building blocks like F/F’s etc. That’s why‚ many companies & fabrication plants provide std. cell library with the data sheets containing information about timing‚ area & power parameters. Overview: - In this report‚ I will discuss the requirement of std. cells & basic flow for their characterization. The topics of discussion are given below: 
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Stem cells are an undifferentiated cell of a multicellular organism that is capable of giving rise to indefinitely more cells of the same type‚ and from which certain other kinds of cell arise by differentiation. The body is not able to produce new neurons to repair spinal cords injuries‚ such as those that cause paralysis. Because of this‚ there is no way for doctors to restore movement to paralyzed people. Stem cells may be the perfect solution to that problem. Researchers have found that implants
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plasma membrane ( Lacerda L.2011) Allowing some molecules enter and exit the cell membrane‚ to create a balance in concentration inside and outside of the cell‚ by doing so the cell often become hypotonic‚ where the concentration outside the cell is higher than the concentration inside the cell‚ therefore causing the swelling of that cell. When cell was placed the the deionized water environment‚ hypothesis was made that the cell will become hypotonic and swell up as the time increased. “Diffusion
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Osmosis of a Potato cell. Hypothesis is that the potato in saltwater is going to show that it will break down the cells of the potato. Osmosis is the diffusion of a solvent through a semi-permeable membrane‚ from a solution of low solute concentration to a solution with high solute concentration‚ up a solute concentration gradient. Net movement of solvent is from the less-concentrated to the more-concentreated.‚ which tends to redure the difference in concentrations. This effect can be countered
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pluripotent stem (IPS) cells differ from those currently in place for human embryonic stem (ES) cells. An IPS cell is created artificially from skin‚ fat and fibroblasts by reprogramming patient ’s own cells. Scientists believe IPS cells to be a promising source for treating diseases. An ES cell is created by destroying an embryo. Other scientists think ES cells will also be a promising source because it is composed of your own DNA‚ so the immune system won ’t reject the cell. While scientists would
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require more efficient sources of power. At the forefront of research for these power sources are hydrogen fuel cells. This power source takes in the most abundant element in the universe‚ Hydrogen‚ and yields immense power without combustion or pollution. The three aspects of this scientific breakthrough are the fuel cells‚ hydrogen production‚ and hydrogen storage. Fuel cells are the devices with which Hydrogen is made into electricity. These use a technology much similar to that of something
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Normal cell division meiosis and gamete production via meiosis. Explain why the process of mitosis and meiosis are both important to a living organism. When would an organism need to undergo the process of mitosis? Meiosis? What would happen if meiosis did not occur? Mitosis is the cell process of growth and division whereas meiosis is the process of developing reproductive cells. The sperm and egg are critical components for almost all living organisms. Every living organism begins with one
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Chemistry Investigation Folio: Practical – Galvanic Cell Name: YY Names of Partner: ZZ Part A Investigation Design Proposal: Purpose of Experiment: To determine the effect of concentration of reactants on the current produced by a galvanic cell. Hypothesis: The greater the concentration of solution in the two half cells reacting with the two metals to produce current‚ the greater the flow of current will be produced from the galvanic cell. Independent Variable: Concentration of both reactants
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STANDARD GRADE BIOLOGY CREDIT LEVEL REVISION QUESTIONS INVESTIGATING CELLS 1. In an investigation‚ three 25 g samples of sultanas were put into separate beakers of distilled water‚ as shown below: After 24 hours‚ the sultanas were removed from the water‚ blotted on filter paper and reweighed. The results are shown in the table: |Sample |Mass after 24 hrs (g) |Percentage change in mass | |1
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