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Date Submitted: 02/10/2015 01:01 AM
UOP Chemistry
DNA
Stephen Palmer
CHM/110
01 February 2015
Instructor: Jennifer Cruz
Alpha radiations are fast moving helium nucleus, consisting of 2 neutrons and 4 protons. They carry the positive charge, and are the heaviest among Alpha, Beta and Gemma. Because they are the largest, they can be stopped by a single piece of paper and because of that they have the lowest penetration of objects. Alpha rays also have the highest ionizing power since they carry the positive charge. They also have a very high diffraction in the air and travel at 1/20th of the speed of light.
Beta rays are fast moving electrons and carry the negative charge. It is not as heavy as alpha, but heavier than gamma rays. Beta rays are smaller than alpha, but bigger than gamma rays. They can penetrate more than a piece of paper, though they generally stop penetrating after passing through an aluminum sheet. They have a moderate diffraction in the air and travel at almost the speed of light.
Gamma rays are photons, like light and thus they are neutral. It is the lightest among the three; since it does not carry any charges/proton/neutron/electron.
Gamma rays have the highest penetrating power, as it does not diffract well in the air. They can penetrate at a larger area; and can be stopped by a thick lead block. Gamma rays have almost no ionizing power, as they carry no charges and travel at the speed of light.
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies. Each DNA sequence that contains instructions to make a protein is known as a gene. The size of a gene may vary greatly, ranging from...