Cell Division Why must cells divide? To start it off‚ cells can’t keep growing forever‚ so when they reach a certain size they will have to divide. Cells divide for four important reasons; reproduction‚ growth‚ repair‚ and replacement of damaged or worn out cells. Most cells divide at least once during their life cycle and some divide divide dozens of time times before they die. There are three types of cell division. They are binary fission‚ mitosis‚ and meiosis. When cell division is
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The cell membrane is made up of fats‚ proteins‚ lipids‚ and carbohydrates‚ and is a permeable structure. However‚ this permeation is very discerning because it only lets certain things pass through it. The cell membrane has a layer of phospholipids with hydrophobic ends and hydrophilic tops. The “tails” are made out of phosphate‚ while the “heads” are made up of two strings of fatty acids. There are two layers of these phospholipids‚ called the “bilayer”‚ and the tips of each phospholipid are facing
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Argumentation: The art of substantiating your claims • Now why is argumentation important? Well it is important because in order to convince someone about a certain thing you have to be good at reasoning you have to have a good explanation. • It is not enough to tell your listeners how they should think and act. It is also very essential to be able to justify your standpoint. What is an argument? • An argument is a claim supported by a reason or an explanation For example: People should
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Political: In the next few years‚ China is saying that they are going to be investing billions of dollars into Hybrid technology. Honda is a automobile company who is well known for developing ad researching hybrid technology. They have been on the forefront of this new technology and for this reason they will be a top choice for this new hybrid technology. They will need to show the Chinese government that their technology is worth investing in. If they manage to do this‚ they will be bale to
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Stem Cell Controversy Stem cells were first isolated and cultured in November of 1998 and have been surrounded with much debate and controversy since day one. “Although the ethical debates have been mostly static and have closely mimicked the ethical debates over abortion‚ the political determinations concerning federal funding of stem cell research have gone through numerous evolutions in the years since the first hESCs were isolated and cultured” (Saltzberg 505). Research is currently being
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Synchronizing Cells at Specific Stages of the Cell Cycle The protocols presented here describe procedures used to synchronize cells in various stages of the cell cycle (Fig. 8.3.1). Synchronization is particularly useful for investigating a particular cell cycle–regulated event or preparing cells for extraction of transient factors whose expression is dependent on cell cycle stage. Exponentially growing cultures are generally asynchronous; i.e.‚ each cell progresses through the cell cycle independently
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Aim: The aim of this experiment is to investigate the movement of water into and out of plant cells by osmosis. The cells chosen for study will be taken from potato tubes as they provide a ready supply of homogeneous material. I did the investigation in two parts‚ the first part of my investigation was my preliminary investigation and then I did my official investigation. In both of my investigations there are several similarities‚ such as fair testing‚ variables‚ key variables‚ reliability
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IN 1996‚ ELECTRIC CARS BEGAN TO APPEAR ON ROADS ALL OVER CALIFORNIA. THEY WERE QUIET AND FAST‚ PRODUCED NO EXHAUST AND RAN WITHOUT GASOLINE. TEN YEARS LATER‚ THESE CARS WERE DESTROYED. TEACHER’S GUIDE “A QUIETLY SHOCKING INDICTMENT OF OUR GAS-GUZZLING AUTO COMPANIES AND THE PETRO-POLITICIANS WHO LOVE THEM.” –KAREN DURBIN‚ ELLE MAGAZINE SUNDANCE FILM FESTIVAL 2006 • TRIBECA FILM FESTIVAL 2006 WHO KILLED THE ELECTRIC CAR? NOTE TO THE TEACHER Who Killed the Electric Car? is
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After reading the “‘Bubble baby’ stem cell” paper I have come to the conclusion that stem cell research is an excellent thing. The reason why I think that is if we never do research and create a cure for “Bubble baby disease” then we will continue to lose babies. But‚ if we risk a few lives of babies for research in the long run it will save millions if not billions of lives. In this essay I will give three reasons on why I think stem cell research is a great thing. “Bubble baby disease.” In my
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Exercise 13 MITOSIS: REPLICATION OF EUKARYOTIC CELLS ANSWERS TO QUESTIONS 1. a. Mitosis and cytokinesis are often referred to collectively as "cellular division." Why are they more accurately called cellular replication? The result of mitosis is production of two cells (replicates) identical to the parent cell. The genetic material is replicated rather than divided. b. Does the cell cycle have a beginning and an end? The organization of our study of cellular events indicates a beginning and
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