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» Browse Science and Environment Term Papers
Mitochondria
Number of Words: 928 / Number of Pages: 4
... is the oxidation of the pyruvate derived from glycolysis and
related processes to produce the ATP required to perform cellular work.(Campbell
182-9)
Pyruvate, or fatty acids from the breakdown of triglycerides or
phospholipids, pass easily through pores in the outer mitochondrial membrane
made up of a channel protein called porin. The inner membrane is a more
significant barrier and specific transport proteins exist to carry pyruvate and
fatty acids into the matrix. Once inside the matrix, pyruvate and fatty acids
are converted to the two carbon compound acetyl coenzyme A (acetyl CoA). For
pyruvat ...
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New Technology
Number of Words: 488 / Number of Pages: 2
... of communications. The Network Operations Center embodies the General Magic business model: minimum maintenance with maximum functionality.
The Network Operations Center was built from the ground up to be a technology showcase. Today, it's one of the world's largest voice recognition-based networks(). The sophisticated voice recognition technology can identify thousands of phrases spoken in plain English().
The service architecture is based on recognized industry standards. So it's configured with all the latest technology. High-performance components make this system sophisticated and very robust ...
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Jaguars 2
Number of Words: 1172 / Number of Pages: 5
... cubs go go outside the den and follow their mother around. When six months comes and the cubs have learned how to do things the way their mother does, they begin to hunt with their mother. At one year the cubs can now hunt for their own food. Even though they can hunt for their own food they still stay with their mother for a few years before finding their own hunting territory. By three years the cubs have learned enough to where they leave their mother to live on their own.
The jaguar's characteristics are very interesting. Jaguars like to stalk their prey by getting as close to it as possibl ...
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Hiv
Number of Words: 799 / Number of Pages: 3
... a person with AIDS from infection to death is approximately $119,000. Outpatient care, including medication, visits to doctors, home health aids, and long-term care, accounted for approximately 32 percent of the total cost. Persons exposed to may have difficulty in obtaining adequate health-insurance coverage. Yearly AZT expenses can average approximately $6,000, although in 1989 the drug's maker did offer to distribute AZT freely to -infected children. The yearly expense for DDI is somewhat less at $2,000. Therefore, if the AIDS epidemic is not controlled, its cost to American taxpayers will become ...
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History Of The Prostate Gland
Number of Words: 517 / Number of Pages: 2
... the illness, the
prostate gland cells can spread around the body,
particulary to the bones where they can paues pain and
disability. Estimates show that the cancer may have been
growing in some men for up to 10 yearsbefore it causes
symptoms and is diagnosed. Some men develop symptoms
whereas others do not. In those who that do, the following
symptoms are commonly found:
BATHROOM TROUBLES:
-Need to urinate frequently, especially at night
-Sudden, incontrolable urges to urinate
-Weak or interrupted urine flow
-A burning sensation or pain when urinating
-Blood in urine
-Cont ...
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The Cause And Effects Of Acid Mine Drainage
Number of Words: 1678 / Number of Pages: 7
... it discharges
to. (Ellison & Hutchison)"
ACID MINE DRAINAGE
Within the mining process there are several sources that cause ARD. No
matter what activities occur, ARD usually occurs when certain conditions are met.
These conditions are the factors that limit or accelerate the release of ARD.
The initial release of ARD can occur anywhere from a few months to many decades
after the sulfide containing material is disturbed or deposited. ARD has been
associated with mines since mining began. When ARD occurs due to the effects of
mining it is called acid mine drainage, or AMD. The coal mining ind ...
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The Greenhouse Effect
Number of Words: 305 / Number of Pages: 2
... the building, and continually heat the air inside,
and even through the night the rays stay in and heat the air. The greenhouse is
also called a "HOT HOUSE" because it gets so hot.
The greenhouse effect is caused by gases such as carbon monoxide, carbon
dioxide, and nitrogen escaping into the atmosphere. These gases get trapped in
the ozone layer and do not let the suns rays escape very easily. This causes
the earth to warm up. This warming can cause droughts, and this would really
affect the farmers. This heating up will cause the plants and animals would die. ...
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Alternative Energy
Number of Words: 339 / Number of Pages: 2
... acts on the same principles as a large magnifying glass. The solar furnace takes the sunlight from a
large area and by the use of lenses and mirrors can focus the light into a very small area. Very elaborate solar furnaces have
machines that angle the mirrors and lenses to the sun all day. This system can provide sizeable amounts of electricity and create
extremely high temperatures of over 6000 degrees Fahrenheit. Solar energy generators are very clean, little waste is emitted
from the generators into the environment. The use of coal, oil and gasoline is a constant drain, economically and
en ...
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Thoeries Of Evolution
Number of Words: 1798 / Number of Pages: 7
... A successful explanation of evolutionary processes was proposed by
Charles Darwin. His most famous book, On the Origin of Species by Means of
Natural Selection (1859), is a landmark in human understanding of nature.
Pointing to variability within species, Darwin observed that while offspring
inherit a resemblance to their parents, they are not identical to them. He
further noted that some of the differences between offspring and parents were
not due soley to the environment but were themselves often inheritable. Animal
breeders were often able to change the characteristics of domestic anima ...
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Bioluminescence In Fungi
Number of Words: 2045 / Number of Pages: 8
... by this biochemical reaction has been
utilized by scientists as a bioindicator for Tuberculosis as well as heavy
metals. On going research involving bioluminescence is currently underway in
the areas of evolution, ecology, histology, physiology, biochemistry, and
biomedical applications.
History of Bioluminescent Fungi
The light of luminous wood was first noted in the early writings of
Aristotle which occurred in 382 B.C.(Johnson and Yata 1966 and Newton 1952) The
next mention of luminous wood in the literature occurred in 1667 by Robert
Boyle who noticed glowing earth and noted that heat ...
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