Chemistry

DNA is a nucleic acid which is pervasive in nature and whose main function is to carry genetic information. As the hereditary material, it has certain distinctive physicochemical, topological, thermodynamic and electrical properties which enable it to perform this function with stunning accuracy. For instance, these properties enable the DNA molecule to remain stable, to replicate and to carry the billions of genes that code for proteins and determine the phenotype while at the same time being able...

A.  To prevent leaking of hydrogen being prepared and to prevent any air entry in the   test tubes generating hydrogen, because H2 is highly flammable gas.B. Zinc reacts with dilute Hydrochloric acid to form Zinc Chloride (Clow, 1952).C.  In the experiment to generate oxygen, manganese is used as a catalyst to speed up the reaction under lower temperature.  Manganese does not change after the reaction. The most common compound of manganese used as a catalyst in oxygen generation...

This project is a study of the chemical process involved in electrolysis and its specific application in electroplating. Electrolysis is the process by which electricity is transmitted through molten solution forms.  The chemical process involves the movement of mobile ions present in a solution which are attracted to either the positively charged anodes or the negatively charged cathodes (Masterton et al, 1985, p. 701). Electrolysis is made possible through the connection of the solution containing...

Cushings disease is a condition in which the body produces high amounts of the cortisol hormone (hypercortisolism) for long periods of time due to a rise in the levels of the pituitary ACTH hormone (Mayo, 2008).  The condition tends to occur more often in women compared to men, and in individuals between the ages of 20 to 60 years (Simard, 2004).  The ACTH Hormone controls the levels of cortisol and a rise in the ACTH by the pituitary would result in the adrenal glands secreting high levels...

 Radioactive material can be defined as any substance that consists of unstable radioactive particles that are able to emit radiation in the course of their decaying. Radioactive decay can be defined as the spontaneous loss of energy by a relatively unstable nucleus of an atom through the emission of ionizing atoms and radiation. In the process, an atom, usually referred to as the parent nuclide transforms to a different type of atom, commonly referred to as the daughter nuclide. Activity is...

 Radioactive material can be defined as any substance that consists of unstable radioactive particles that are able to emit radiation in the course of their decaying. Radioactive decay can be defined as the spontaneous loss of energy by a relatively unstable nucleus of an atom through the emission of ionizing atoms and radiation. In the process, an atom, usually referred to as the parent nuclide transforms to a different type of atom, commonly referred to as the daughter nuclide. Activity is...