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Term Papers on Science

Genetic Engineering. 2
Number of words: 2977 - Number of pages: 11

.... and even aging are a thing of the past. By understanding genetic engineering and its history, discovering its possibilities, and answering the moral and safety questions it brings forth, the blanket of fear covering this remarkable technical miracle can be lifted. The first step to understanding genetic engineering, and embracing its possibilities for society, is to obtain a rough knowledge base of its history and method. The basis for altering the evolutionary process is dependent on the understanding of how individuals pass on characteristics to their o .....


Mescaline
Number of words: 673 - Number of pages: 3

.... and in areas where it is used in ceremony. Mescaline carries a wide margin for dosage error and has little or no withdraw effects, although the dangers do increase with higher dosages. A light dose (100-200mg) can give the user feelings of giddiness or anxiety, and a moderate dose of Mescaline (200-300mg) begins to impair the senses. Strong doses (300-500mg) will induce hallucinations and effect the user's perceptions of color, time, and space. Heavy does of Mescaline (500-700mg) and frequent use of mescaline will cause symptoms of schizophrenia, psychotic e .....


Dna Replication
Number of words: 2173 - Number of pages: 8

.... there will be two new daughter strands synthesized. However, each of these daughter cells is synthesized in different ways. The first strand of DNA is built by simply adding nucleotides to its end. This strand grows inward towards the replication fork as the DNA molecule unzips. This strand ends with a hydroxide (OH) group and is called the 3` prime or 3`end. The enzyme that catalyzes this process is called DNA polymerase. The second strand is built by having a polymerase jump ahead on the strand and fill in the complementary nucleotides backwards. This .....


Global Warming
Number of words: 1772 - Number of pages: 7

.... been dramatic fluctuations in over all average temperature for the past 150,000 years that suggest a direct association with carbon dioxide levels. In the past the temperature highs and lows have been in tandem with carbon dioxide level highs and lows, this does not seem to be a mere coincidence. Carbon dioxide currently accounts for 0.03% of the gas content within the atmosphere. However, it has a disproportionate impact on the earth's temperature. Thus, minor fluctuations in the percentage of atmospheric carbon dioxide will likely have a significant effect .....


Plastic Not Paper
Number of words: 559 - Number of pages: 3

.... of paper as one plastic delivering truck. Talk about a big waste of gas. Plastic bags cost about ¼ of a cent to make, while paper cost close to 3 cents. This is money we save as well as the store owner. This is a lot of money that is going to waste considering that plastic bags are so much more practical then paper. You can use them for lots of other things. You can take on trips to the grocery store, your can protect dry clothing from wet towels in an exercise bag. You can line your house hold waste basket with them, you tote dry shoes to work on rainy .....


Chlamydial Infection
Number of words: 753 - Number of pages: 3

.... three weeks after exposure. Two of every three infected women and one or two of every four infected men have no symptoms whatsoever. As a result, often the disease may not be diagnosed and treated until complications develop. Doctors estimate that, in women, one third of the s result in PID (Pelvic Inflammatory Disease). Often these infections are not diagnosed until PID or other complications develop. In men, rarely, s may lead to pain or swelling in the scrotal area, which is a sign of epididymitis, an inflammation of a part of the male reproductive system loc .....


Nuclear Energy: Uranium Fission
Number of words: 1142 - Number of pages: 5

.... uranium is only being mined and separated from ore. However, a huge untapped source is our oceans. Sea water contains 3.3x10^(-9) (3.3 parts per billion) of uranium, so the 1.4x10^18 tons of sea water contains 4.6x10^9 tons of uranium. All the world's electricity usage, 650GWe could therefore be supplied by the uranium in sea water for 7 million years(Energy 25). This is a only a theoretical number because it is not possible to get all of the uranium out of our vast oceans. Also, it does not include the fact that in that many years, half of the uranium wi .....


Growth Dynamics Of E. Coli In Varying Concentrations Of Nutrient Broths, PH, And In The Presence Of An Antibiotic
Number of words: 2626 - Number of pages: 10

.... versus Time growth curve. The final cell concentration for the control was 619,500 cells/mL. Four media, after calculations, produced fewer cells than that of the control, these were: Chloramphenicol producing 89,3 01 cells/ml; glucose producing 411,951 cells/mL; lactose producing 477,441 cells/mL and finally pH 6.0 producing 579,557cells/mL. The remaining four media, after calculations, produced cell counts greater than the control: 2X with 1,087,009 cells/mL; 0.5X with 2,205,026 cells/mL; pH 8 with 3,583,750 cells/mL and finally pH 7.0 with 8,090,325 cells .....



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