What is a chromosome? In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure. Chromosomes are not visible in the cellâs nucleusânot even under a microscopeâwhen the cell is not dividing.
Once candidates have completed the CNA program required in the state they want to practice in, they will have to pass a state certification exam to receive their professional credential. Generally, nursing assistants are not expected to have previous work experience before they become certified.
How to Become an Obstetrician. Graduation from high school is the first step in the lengthy process required to become an obstetrician. Following high school, students must successfully complete a four-year bachelor's degree, majoring in pre-medical studies.n obstetrician is a medical doctor who provides specialized medical care to women during pregnancy, childbirth and post-partum. In addition, obstetricians are trained to detect reproductive diseases in women as well as recommend and implement treatment, including surgery.