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Help With Science Papers
Taking The Pill Depression And
... not had any personal experience with this illness.
The physical basis of depression involves neurotransmitters in the brain. Neurotransmitters are chemicals that carry messages from one nerve cell to another. Nerve cells do not touch. There are microscopic gaps between them called synapses. For a nerve impulse to travel from one nerve cell to another, the sending cell releases a tiny amount of one of the neurotransmitters, which transmits the signal to the second cell, and so on around the body. After a nerve impulse has been sent across a synapse, special enzymes clear away the neurotransmitter so that another ...
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Buoyant Forces
... step was to measure the apparent weight of the cylinder when
it is completely submerged in a bath of water using the formula Wa=ma*g , this
was found to be 88.5grams. Knowing these two numbers, the bouyant force that
the water places on the object can be calculated using the formula Fb=W-Wa ,
Wa=.8673n W=.98n Fb=.1127n
Part 2 of this lab consisted of weighing an empty cup, which was 44grams.
And then filling another cup up to a certain point the if any more water was
added, it would spill out of a little opening in the cup, the water spilled out
could be caught in the first cup. This is done so that the water s ...
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Memory
... that new memory is stored in a section of the brain called the
hippocampus (Loftus p. 392). Memory is acquired by a series of solidifying
events , but more research is still needed to discover and fully understand
(Loftus p. 392).
Memory is broken down into three systems or categories . These different
systems are sensory memory , short-term , and long-term memory. Sensory memory
is the shortest and less extensive of the others. It can hold memory for only an
instance (Memory p. 32). Suppose you see a tree , the image of the tree is
briefly held by the sensory memory and quickly disappears unless you transfer it
to ...
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The Aging Process
... life expectancy, because most people have their life altered and cut short from disease and disability, not from aging.
No one is so old
as to think he cannot
live one more year.
-- Cicero (106-43 B.C.)
It is still true that approximately 70% of all deaths in the United States are from heart disease, strokes, and cancer. Other diseases, accidents, and violence account for the rest--but not age. These same diseases and Alzheimer's disease account for much of the disability attributed to aging. As these diseases are conquered, far more people will live to their full potential life span and remain active and ...
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Prions
... the
of the victims brains that were eaten by the tribesmen that when they died, as a
sign of respect their brains where eaten and the chain went on and on.
The thing that makes prions so special is the fact that they lack the
basic elements for reproduction, deoxyribonucleic acid and ribonucleic acid DNA
and RNA respectively. This is what has given science a great deal of doubt as
this would give the dogma of the beginning of live a radical turn.
Prions have been in research for many years with experiments like the
one done by Stanley B. Pruiser and his team of scientists at the School of
Medicine of the Univ ...
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Cancer 2
... each. During certain phases of the cell's life cycle, the chromosomes are stretched out into long, thin strands, and they are tangled together into a network called chromatin. In addition to genes, chromosomes contain proteins, some of which cover the genes that are not "turned on" at the particular time.
The original genetic information, stored in a coded form DNA, is carried out of the nucleus by RNA and then translated into proteins by ribosomes. 70% of oncogenes are located in the weak points of the chromosomes-hereditary regions where the DNA molecule may break or its portions may be rearranged into new comb ...
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Rates Of Reaction
... In group 2 (or IIa) of the periodic table, magnesium is one of the
alkaline earth metals. The atomic number of magnesium is 12.
Magnesium(s) + Hydrochloric acid(aq) = Magnesium Chloride(aq) + Hydrogen(g)
Mg + 2HCl = MgCl2
+ H2
In the reaction when the magnesium hits the acid when dropped in, it fisses and
then disappears giving of hydrogen as it fisses and it leaves behind a solution
of hydrogen chloride.
The activation energy of a particle is increased with heat. The particles
which have to have the activation energy are those particles which are moving,
in the case of magnesium and hydrochl ...
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Clubfoot
... 800-1000 babies, being twice as common in boys than girls. One or both feet may be affected.
The history of clubfeet began as far back as 400 B.C. Hipocrates was the first to describe it. He used bandages to treat it. As time progressed so did the treatment methods. In about 1743 gentle stretching was recommended. During that same century, a mechanical device resembling a turnbuckle was used to help stretch the tendons. By this time was pretty well known around the world, using the typical stretching and splinting methods. In the 1800’s plaster of paris was first introduced, and later that same century, ...
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Diverrsity Of Plants
... evolved between the vascular plants and provided a means to
protect young individuals. Flowers, which are the most obvious characteristic
of angiosperms, guide the activities of insects and other pollinators so that
pollen is dispersed rapidly and precisely from one flower to another of The same
species, thus promoting out crossing. Many angiosperms display other modes of
pollination, including self-pollination.
Evolutionary Origins
Plants derived from an aquatic ancestor, but the evolution of their
conducting tissues, cuticle, stomata, and seeds has made them progressively less
dependent on water. ...
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Attention Deficit Disorder
... An individual experiencing at least six of the following characteristics defines ADHD – Inattentive type:
a. Fails to give close attention to details or makes careless mistakes
b. Difficulty sustaining attention
c. Does not appear to listen
d. Struggles to follow through on instructions
e. Difficulty with organization
f. Avoids or dislikes requiring sustained mental effort
g. Often loses things necessary for tasks
h. Easily distracted
i. Forgetful in daily activities
2. An individual experiencing six of the following characteristics defines ADHD – hyperactive/impulsive type:
a. Fidgets with ...
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