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 Ultrasound Technician. To become an ultrasound technician, you donât have to have a specific license as the program is not yet required. That said, it is nearly impossible to find a position if you donât already have some medical training and certification from an organization like the ARDMS.