Introduction When an egg is fertilized by a sperm to make a human embryo‚ that single fertilized egg cell divides millions of times to form the approximately six billion cells that make up the human body. These types of cells (4 to 7 day old embryo) are called embryonic stem cells that are unspecialized and have the ability to renew themselves and give rise to specialized cell types (they have not yet developed into cells that perform a specific function). A stem cell is uncommitted and remains
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RUNNGING HEAD: The Prenatal Period The Prenatal Period: 3 Stages and Drugs Kelsey Fitzmaurice Introduction to Psychology Abstract The Prenatal Period last about nine months and consists of three different stages. The first stage is Germinal then Embryonic and finally the fetal stage. The baby goes through many different developmental changes during the prenatal period. Each stage brings new developments to a great bundle of life we call our baby. Ovulation is the release of an ovum
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first furrow. The furrow in the third cleavage runs horizontally but in a plane closer to the animal than to the vegetal pole. It produces the 8-cell stage. The next few cleavages also proceed in synchrony‚ producing a 16-cell and then a 32-cell embryo. However‚ as cleavage
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functions within the cell. Life cannot exist on earth without the presence of water. In this lab we will investigate to see if seeds can germinate with a substance which its inactive ingredient is water. Since seeds require water in order for its embryo to rise up‚ one may conclude that mouthwash which contains a small regiment of water molecules can indeed provide for the environment of seed germination. One concept that will also be determined is whether a dormant seed can sprout under a fairly
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suffered or died due to the once called "untreatable" diseases decades ago. Stem cells are the ones which can develop into any type of a body cell including the cells of blood‚ liver‚ brain‚ muscles‚ and many more. They are found in adult bone marrow‚ embryos‚ fetuses‚ and blood from the umbilical cord (Bailey 100). Stem cell research is the latest advancement in biotechnology which shows how an organism develops from a single cell and how healthy cells replace damaged cells in adult organisms. This technique
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One of the biggest issue is result of obtaining embryonic stem cells. As the name suggest‚ these stem cells are obtained from human embryos but as a result‚ the embryo dies in the process. This has risen controversy from religious communities that are against the research of stem cells. As a result‚ embryos are donated to science rather than growing them themselves. Also‚ there is a chance that embryonic stem cell implants can be rejected by the human body‚ so scientists
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There are many reasons that certain drugs damage to an embryo very early in pregnancy even before the mother realizes she is pregnant. Firstly‚ some of the mother already exposed to certain drugs before she get pregnant such as tobacco and alcohol. For example‚ the women who take cigarettes everyday in their daily life will continue to smoke before they realize it. Due to this‚ the babies of mother who smoke tend to grow more slowly in the womb and are likely to be born prematurely and small (Habek
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comprehensive research on seed germination. I hope the findings of this research will be of importance in equipping farmers with useful knowledge about maize seeds germination. Introduction Germination is the process where a seed sprouts from an embryo and starts growing towards being a plant. Seed germination is important to plants‚ animals and human beings. Human beings and animals need food from plants to survive and plants need seed germination to grow. Basic requirements for seed germination
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Germination in plants is the process in which dormant seed begins to grow and sprout under certain growing conditions. The English pea‚ also known as the garden pea‚ is a member of the legume family and is known to grow roughly three to four inches long. Research shows that it only takes approximately 1 week for the seed to start to germinate. There are many things that can affect‚ the growth of the pea seed such as; temperature‚ moisture‚ planting depth and sunlight. The pea grows best in temperatures
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Treatment of Fetal Alcohol Syndrome Like any condition‚ treatment for fetal alcohol syndrome is constantly emerging. Since the syndrome causes neurological changes similar to attention deficit hyperactivity disorder it was once thought that medications used to treat attention deficit hyperactivity disorder would be useful in treating fetal alcohol syndrome.2 Conflicting results from the use of the medications challenged doctors to conduct treatment differently. Pharmacists and doctors are now looking
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