Lower Vascular Plants Lower vascular plants include divisions Lycophyta‚ Sphenophyta‚ and Pterophyta. Division Lycophyta includes club mosses and ground pines. Sporophytes of these have stems covered with small‚ scaly leaves. Sporangia appear on the upper surface of the leaves and are structures that produce spores. Lycopods have small leaves that each contains one vein that brings water to the leaf from the roots and carries away extra food. Division Sphenophyta is made up of horsetails or scouring
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English Section 1 Stem Cell Research Term Paper Stem Cells are undifferentiated cells. This means that they can divide and multiply before given a specialized job in the body such as bone cells or skin cells. There are embryonic stem cells‚ which come from developing embryos‚ somatic stem cells‚ which come from adults‚ and umbilical stem cells‚ which come from the umbilical blood. (Stem Cell Basics‚ 2) Although each of these stem cells can all be used to treat a variety of different diseases
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The embryonic stem cells‚ which are pluripotent cells that are derived from the inner cell mass of the pre-implantation embryo at the blastocyst stage. They are considered as an important finding as they have the potential of self-renewal and differentiate indefinitely into the three germ layers‚ the endoderm‚ mesoderm and the ectoderm. The human embryonic stem cells were considered to be useful in clinical applications‚ as they have the potential to be used in cell therapies on diseases like Parkinson’s
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Stem cell research could be a scientific miracle‚ or it could be an unethical disaster. This debate between medical science and ethical judgment has been going on for years‚ and has recently become a major topic. Not too long ago‚ the stem cell research funding was cut off by President Bush. He explained his actions by stating‚ "If this bill would have become law‚ American taxpayers would‚ for the first time in our history‚ be compelled to fund the deliberate destruction of human embryos. And I’m
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Stem Cell Research Legislation For some time now‚ stem cell research has been a major issue when it comes to ethics. “Ethics‚ science and religion became further intertwined with politics in the 1990’s‚ increasing the battles among congress‚ administrations‚ and other agencies” (Scott‚ 2006‚ p.153). Stem cell research is probably one of the most important scientific advancements in the past one hundred years. Stem Cell research began in the 1800’s‚ with the discovery that some cells could actually
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and Stem Cell Research Stem cell research is very controversial in today’s world. Although stem cell research has the potential for curing diseases and conditions‚ some people view stem cell research as unethical and immoral. People do not realize that there is hope for medical advancement today because medical specialists can use stem cell research to grow practically any cells needed for sick patients. Today‚ I am going to tell you what deontology is‚ how the school of thought views stem cell
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damaged cells. Since 1956 experimenting with multiple types of stem cells have resulted in various amount of outcomes in improving cardiac function. Stem cell therapy has not yet been perfected and still have unanswered questions in the procedure of administrating therapeutic amounts of stem cells‚ the best route in delivery of the stem cells‚ and how long proper admission should consist of. As well the controversy of the use of embryotic stem cells still
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Stem cell research represents a new opportunity for ethical thought and debate. Stem cells are primitive cells which have yet to specialize. Through proper coaxing‚ stem cells can be made to differentiate into usable body cells and eventually used for medical treatment. Though stem cell technology has been in development since the 1960’s‚ it was not until August of 2001‚ when then-president George W. Bush announced that federal funds could be allotted to embryonic stem cell research‚ that the
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Ethics and Philosophies of Stem Cell Research Nader Zeidan Malek Fatte Mohamad Said Fouad Saba Marc Deeb Joy Chamoun Ethics of Human Stem Cell Research Gene H. Outka Varying Views of Fetuses and Embryos • From the Left •From the Middle • From the Right Preferred Philosophy • Kantian – Murder vs Killing – Choosing Life – Burden of Evil – “Nothing is Lost” Principle The Ethics of Embryonic Stem Cell Research Howard J. Curzer Conservative Ethics of Embryos • Embryos
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Marigold is a plant in the genus Calendula of the family Asteraceae. It is probably native to southern Europe‚ though its long history of cultivation makes its precise origin unknown‚ and it may possibly be of garden origin. It is also widely naturalised further north in Europe (north to southern England) and elsewhere in warm temperate regions of the world. It is a short-lived aromatic herbaceous perennial‚ growing to 80 cm (31 in) tall‚ with sparsely branched lax or erect stems. The leaves are
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