... include sequencing of peptides and proteins, studies of non-covalent complexes and immunological molecules, DNA sequencing, and the analysis of intact viruses. In the 1990's, mass spectrometry hit the mainstream chemistry and biochemistry laboratories with commercially available, high performance instruments. While historical evidence suggests that separations using column chromatography may have been done as early as the Middle Ages, an explanation ... could be used in conjunction with a liquid stationary phase, foreshadowing their later work with gas-liquid chromatography. Their pione...

• Word Count: 2140
• Approx Pages: 9
• Has Bibliography
• Grade Level: Undergraduate

... fact as to why crime causation has risen. The psychobiology of crime highlights the role of human DNA, environmental contaminants, nutrition, hormones, physical trauma (especially to the brain), and body chemistry in human cognition feeling and behavior. Chromosome theory has also been an explanation for criminal behavior that has had taken place in the 1960's. Females have an XX chromosome because ... explain "crime" that extends beyond "traditional lower-class street crime" and for its lack of recognition of the political nature of criminal definitions. Psychobiological theories tend ...

• Word Count: 1490
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... provides this loss of diversity could create a situation where no one possesses genetic resistance to certain disease, leaving all of humanity vulnerable to extermination by an epidemic,"" says Michael Mautner, a chemistry professor at the University of Canterbury. "In sexual reproduction, some of the genetic material from each parent undergoes mutations that can lead to entirely new biological properties. Vast numbers of ... ...

• Word Count: 2464
• Approx Pages: 10
• Has Bibliography
• Grade Level: Undergraduate

... was caused by mtDNA which was damaged by free oxygen radicals, or molecules with Oxygen with a highly reactive unpaired electron. The formation of oxygen free radicals is a matter of basic chemistry, which takes place as a result of an error in the electron transport chain. Normally, in the electron transport chain, an electron is passed from transfer protein to transfer protein until ... ...

• Word Count: 2319
• Approx Pages: 9
• Has Bibliography
• Grade Level: Undergraduate

... be separated through the application of an electric current. Electrophoresis was developed by Arne Tiselius. The process is used in medicine and biochemistry (science concerned with the organic and physical chemistry) to separate, identify, and measure the amount of various proteins. Electrophoresis is an analytical method frequently used in molecular biology (study of life processes) and medicine. It is applied for ... ...

• Word Count: 1589
• Approx Pages: 6
• Grade Level: Undergraduate

... be separated through the application of an electric current. Electrophoresis was developed by Arne Tiselius. The process is used in medicine and biochemistry (science concerned with the organic and physical chemistry) to separate, identify, and measure the amount of various proteins. Electrophoresis is an analytical method frequently used in molecular biology (study of life processes) and medicine. It is applied for ... ...

• Word Count: 1595
• Approx Pages: 6
• Grade Level: Undergraduate

... her out quickly and Maurice did not have good enough reason to fire her. Personally what I see is that Watson is jealous of Franklin, because she possesses knowledge of physical chemistry and or x-ray which was uncommon. Watson could have started to resent Rosalind when she insulted Watson and Cricks model claiming that it was not right. She referred to the ... ...

• Word Count: 2348
• Approx Pages: 9
• Has Bibliography
• Grade Level: High School

... reactions. Lyons says it well in his article stating that: "As for creating life artificially, there is something special about humans being created out of an act of love, not chemistry" (496). Wachbroit concludes this emotion by quoting theologian Gilbert Meilaender, Jr on the unnatural birth of a clone. Meilaender states a cloned child would be "designed as a product" rather that "welcomed as ... ...

• Word Count: 1878
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School

... organisms have been evolving to escape our controls. Moreover, scientists can perform experiments to study evolution in real time, just as experiments are used to observe dynamic processes in physics, chemistry, and other branches of biology. To study evolution in action, scientists use organisms like bacteria and fruit flies that reproduce quickly, so they can see changes that require many generations ... ...

• Word Count: 1289
• Approx Pages: 5
• Grade Level: Undergraduate