Summary. DNA is tightly packed in the nucleus of every cell. DNA wraps around special proteins called histones, which form loops of DNA called nucleosomes. These nucleosomes coil and stack together to form fibers called chromatin.Chromatin in turn forms larger loops and coils to form chromosomes.ummary. DNA is tightly packed in the nucleus of every cell. DNA wraps around special proteins called histones, which form loops of DNA called nucleosomes. These nucleosomes coil and stack together to form fibers called chromatin.
A driving test is a high-stakes test: Without passing the test, the test taker cannot obtain a driver's license. A high-stakes test is a test with important consequences for the test taker.Passing has important benefits, such as a high school diploma, a scholarship, or a license to practice a profession. Sometimes a high-stakes test is tied to a controversial reward. 2  For example, some people may want a high-school diploma to represent the verified acquisition of specific skills or knowledge, and therefore use a high-stakes assessment to deny a diploma to anyone who cannot perform the necessary skills.
What is the purpose of a dexamethasone suppression test? wo tests use dexamethasone (a synthetic cortisol) for diagnosing Cushing's disease or Cushing's syndrome. They are the LOW DOSE and the HIGH DOSE dexamethasone suppression test. The low dose dexamethasone suppression test can be used to screen for the presence of hyperadrenocorticism (Cushing's disease) and in many cases, it will differentiate the type of Cushing's disease that is present.