... means for anyone to perform original research. In fact, many scientists are involved with research directly; running experiments and making observations. Although individually these scientists are engaged in many separate fields of science (e.g., Astronomy, Biology, Chemistry, Physics), collectively they're doing just two types or broad categories of research - basic and applied. Basic research expands the ... a chemically significant order - almost like stations on an assembly line. The list that follows summarizes major differences between prokaryotic and eukaryotic cells. PROKARYOTIC ...

• Word Count: 10700
• Approx Pages: 43
• Grade Level: High School

... information. The fact that the polypeptides are joined together only by hydrogen bonds means that they can easily be broken and the strands can separate for replication and protein synthesis which allows for information to be transferred. DNA is a large molecule therefore it can store large amounts of ... polynucleotide chain. The DNA molecule unwinds with the help of the enzyme DNA helicase, which helps break hydrogen bonds between complementary base pairs and separate the two strands. The new nucleotides in the nucleus bind with their complementary bases in each exposed chain. DNA poly...

• Word Count: 1977
• Approx Pages: 8
• Grade Level: Undergraduate

... and elongation. DNA is cut into small fragments using an endonuclease prior to denaturation. Since DNA is a double helix, denaturation is the step required to separate the strands from each other by increasing the temperature. In this step the temperature is increased up to about 90-95°C, for approximately one minute. The ... drastic change in temperature causes the hydrogen bonds between strands to break and as a result the two strands separate. After the completion of denaturation the sample is ready to proceed to the second step of PCR: the annealing step. After the DNA sample has ...

• Word Count: 815
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... of being capable of combining genetic makeup and computerized creations. Kaku expects the creation of planetary civilization in the twenty-second century. These advances have been broken down into three separate levels: Type I, Type II, and Type III. A Type I civilization will be able to manipulate the weather, mine the oceans, and obtain energy from deep within the earth. To obtain this ... 32). This will be included in the office of the future. Tabs will carry infrared transmitters and have the power of a PC. Foot size pads will be used as a scratch piece of paper, and boards will fun...

• Word Count: 2066
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• Has Bibliography
• Grade Level: High School

... called "artificial twinning" because it imitates the mechanism by which twins naturally develop. It involves removing one or more cells from an embryo and encouraging the cell to develop into a separate embryo with the same DNA as the original. It has been successfully carried out for years on many species of animals. Very limited experimentation has been done on human embryos ... understanding of the causes of miscarriages; this might lead to a treatment to prevent spontaneous abortions. A woman might prefer to have one set of identical twins, rather than go through two separate pregna...

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... DNA sample which has been made into billions of copies and identified by types found in that sample (Cheney 3). Genetic fingerprinting uses the complex technology of an electrical field to separate DNA pieces by length and radioactive material to create a mark on an X-ray film of and individual's DNA fingerprint (Froelich and Leyden 3). Examining a DNA fingerprint, one expert commented, "They look ... the process of electrophoresis, in which they are exposed to an electric current that forces small pieces throughout the gel faster than large pieces. In about twelve hours, the fragments ...

• Word Count: 1919
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School

... called "artificial twinning" because it imitates the mechanism by which twins naturally develop. It involves removing one or more cells from an embryo and encouraging the cell to develop into a separate embryo with the same DNA as the original. It has been successfully carried out for years on many species of animals. Very limited experimentation has been done on human embryos ... understanding of the causes of miscarriages; this might lead to a treatment to prevent spontaneous abortions. A woman might prefer to have one set of identical twins, rather than go through two separate pregna...

• Word Count: 2522
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School

... a large field including identifying the decedent, determining time of death, autopsies, and determining the cause of death. It requires a lot of patience and concentration to make sure you find every piece of evidence and clues to the death. Identifying the decedent standard incorporates physical description, scars and marks, fingerprints, photographs, Age, Dental features, Radiological evidence, blood factors, and medical indications ... a particular manufacturer's space carpets. Automobiles fitted with the carpets were traced, and the criminal was found among the owners. Like thin film...

• Word Count: 4359
• Approx Pages: 17
• Grade Level: Undergraduate

... lives, from manufacturing and the materials we use to the structure of our DNA. The way in which we have evolved technology has meant that we have moved from having separate devices for different tasks; I have my iPod for my music, my Kindle for my books and my Gameboy for playing games. However with the idea of ephemeralisation, technology has shifted ... smartphones to do some of the leg work for us. The more immediately unnecessary pieces of information aren't stored in our brains as we are always able to Google said piece of information when it is required. In the same respect, we a...

• Word Count: 2871
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• Grade Level: Undergraduate

... batch of a particular manufacturer's space carpets. Automobiles fitted with the carpets were traced, and the criminal was found among the owners. Like thin film chemography, gas chromatography is used to separate substances u in mixtures, however, in this case, substances are in gaseous form. One of the most common applications of gas chromatography in forensic science is for the measurement of the ... as a tool for individual identification. 1784 In Lancaster, England, John Toms was convicted of murder on the basis of the torn edge of wad of newspaper in a pistol matching a remaining u...

• Word Count: 4661
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• Grade Level: Undergraduate

... sequences, so insights gained by non-human genomes often lead to new knowledge about human biology. DNA Replication DNA replicates (duplicates) just before cell division. When two strands of DNA separate, each strand can be used as a template, or a "mold," to produce a complementary strand. DNA is described as "semiconservative" because its molecule has one old strand and one new strand. Before ... bits with enzymes, is used in today's automated sequencing machines. These machines decipher relatively shorts fragments about 500 bases long, but it is faster and cheaper than previously don...

• Word Count: 2575
• Approx Pages: 10
• Has Bibliography
• Grade Level: Undergraduate