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» Science Essays and Papers
Bang, The Life Cycle Begins
<view this essay>.... single, inconceivably dense point concluding the life of the universe. You would think of this as the end, but only an explosion is needed to wake up and give life to a new universe. Therefore, trapped forever in the cycle of rebirth.
As humans we also travel through a cycle of rebirth according to the Hindu religion. We are all trapped on the Wheel of Samsara trying to break free. It is only possible to escape through the laws of Karma. Karma is simply how you act in this life determines what you are after your rebirth. For example, if you live each life being the best Hindu you possible can eventually your soul or Atman will be released and reach li .....
Number of words: 237 | Number of pages: 1 |
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Adrenal Gland
<view this essay>.... (aldosterone) and Glucocorticoid (cortisol) hormones.
Adrenaline affects many different types of tissues throughout the body. The release of adrenaline prevents hypoglycemia (low blood sugar), by binding adrenergic receptors in the hormone releasing cells of the pancreas. Epinephrine is called the “fight” or “flight” hormone.
The actions of epinephrine and norepinephrine are generally similar, although they differ from each other in their effects.
Norepinephrine constricts almost all blood vessels. Norepinephrine is formed by intravenous infusion to combat the fall in blood pressure associated with types of shock. Norepinephrine is formed in the body .....
Number of words: 1019 | Number of pages: 4 |
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Is Science Necessary For Our Future?
<view this essay>.... to
our lives. Science is not necessary to our future and will ultimately be
the catalyst for the destruction of the human race.
Dr. Frankenstein was a scientific genius and ambitious in his
studies. When he tried to use his genius to prolong life, he found he had
the power to create life. The doctor's scientific success in creating the
monster was ultimately a failure for morality. Frankenstein, upon
completion of his monster, realized the immorality of his work and rejected
it and disassociated himself from it and science. The result of
Frankenstein's immorality was death for just about everyone he loved and
utter despair for himself. The monster was .....
Number of words: 653 | Number of pages: 3 |
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The Theory Of Evolution
<view this essay>.... discusses how the earth had a "primitive atmosphere" made of water, ammonia, methane, and carbon dioxide. Various forms of energy broke down these primary components, and formed amino acids. Eventually, these amino acids drifted into the sea, and combined to form proteins. In this way, the ocean became an "organic soup". Eventually, the proteins in this "organic soup" joined, a membrane grew around the proteins, and the first complete cell was formed (Dawkins 16). According to evolution, this process was the beginning of life.
But, there are minimal chances that this organic soup would form. Consider the experiment of Stanley Miller. In 1953, Stanley Miller .....
Number of words: 5626 | Number of pages: 21 |
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Hydroponics Growing Without Soil
<view this essay>.... B. and Alice P. Withrow developed another hydroponic method. Their process was called Nutriculture. Nutriculture varied from Dr. Gericke’s method in that gravel was used as a rooting medium.
After World War II a number of commercial installations were built in the United States. The majority of these were located in Florida. Most were out of doors and subject to the rigors of the weather. Poor construction techniques and operating practices caused many of them to be unsuccessful and production inconsistent.
How is the quality of the food today affected by the methods of Hydroponics of today?
Body
The growing .....
Number of words: 2420 | Number of pages: 9 |
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Cardiac Pacemakers
<view this essay>.... this normal cardiac control making it necessary to use some artificial means to regulate the rhythm of the heart. Today, some half a million men and women, most of them over the age of sixty, carry implanted that take over the duties of the natural conduction system. Tens of thousands of these devices are implanted each year in this country alone. Over the past thirty years have evolved from simple devices only capable of fixed-rate stimulation of a single chamber of the heart to more sophisticated "implanted computers" that medical personnel can interrogate and reprogram from outside the patient's body. These refinements have allowed for more physiologi .....
Number of words: 2766 | Number of pages: 11 |
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Aids 5
<view this essay>.... of the world.
In the United States alone there are about 65,000 new cases every year. The
origin of the AIDS virus is uncertain, but it may have originated in Central
Africa.
The first AIDS patients in the Americas and Europe were almost
exclusively male homosexuals. Later patients included those who used
unsterilized intravenous needles to inject drugs; hemophiliacs (persons with a
blood-clotting disorder) and others who had received blood transfusions;
females whose male sexual partners had AIDS; and the children of parents
with AIDS. However since 1989, heterosexual sex was found to be the
fastest growing means of transmission of the vi .....
Number of words: 1096 | Number of pages: 4 |
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Protein Synthesis
<view this essay>.... by an enzyme called
polymerase. From one of these single strands of a DNA molecule, a mRNA molecule
is built. This is accomplished by an enzyme which travels along a portion of DNA
between two exons and attaches the opposing base pairs to the backbone of the
mRNA (a structure composed of phosphates and ribose). The nitrogen bases of this
new molecule are identical to that of the opposite side of the original DNA
molecule except that the thymine has been replaced with uracil. The formation of
this molecule allows for the construction of proteins in the ribosome without
risking the DNA in the cytoplasm.
The mRNA travels through the cell to a ribosome. Here tRNA .....
Number of words: 241 | Number of pages: 1 |
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