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 a Physician Assistant [About this section] Get the education you need: Find schools for Physician Assistants near you! Physician assistants typically need a master's degree from an accredited educational program. Earning that degree usually takes at least 2 years of full-time postgraduate study. All states require physician assistants to be licensed.