Taking a Look at DNA Supercoiling - 684 Words

DNA supercoiling is the over-winding or under-winding of a DNA strand. In general, most organisms’ DNA is negatively supercoiled. There are two types of supercoiling: positive and negative. Positive supercoiling means that the DNA strands are twisted in the right direction; whereas negative supercoiling means that the DNA strands are twisted in the left direction. The laws of Physics govern everything that happens in the world, including DNA coiling in living beings. Some of the concepts in Physics that are involved in DNA coiling are quantum mechanics and statistical mechanics. Quantum physics is a branch of physics that explores certain units of energy, which are called quanta. These units of energy are described by the Quantum Theory. The dictionary definition of the Quantum Theory is: â€Å"Any theory predating quantum mechanics that encompassed Planck’s radiation formula and a scheme for obtaining discrete energy states for atoms, as Bohr theory.† This definition means that Quantum Theory deals with Planck’s radiation formula, Bohr theory and indivisible units of energy. A great deal of research has been conducted in the field of quantum mechanics and its connection with DNA supercoiling. Some Physicists have formed a theory, which states that quantum entanglement holds DNA molecules together and prevents the DNA from falling apart. Quantum entanglement is the relationship between any objects that deal with quantum mechanics. A Physicist named Elisabeth Rieper, from theShow MoreRelatedCell-cycle dissection is a technique in cell sci ence that utilizes stream cytometry to recognize800 Words   |  4 Pagesto recognize cells in diverse periods of the cell cycle. Before examination, the cells are permeabilised and treated with a fluorescent color that stains DNA quantitatively, generally propidium iodide (PI). The fluorescence force of the stained cells at specific wavelengths will in this manner associate with the measure of DNA they hold. As the DNA substance of cells doubles throughout the S period of the cell cycle, the relative measure of cells in the G0 stage and G1 stage (before S stage), in theRead MoreSymptoms And Treatment Of Bacterial Resistance Essay2228 Words   |  9 Pagespost-antibiotic era, in which common infections and minor injuries which have been treatable for decades can once again kill.†2 With how many people that have infections today, the topic of antibiotics is of utmost importance. The aim of this paper is to look at the history of antibiotics, how they work and why they are no t working now, and the possibility of better antibiotics in our future. History Antibiotics themselves are relatively new in the history of health and medicine. In order to better understand