Primary ciliary dyskinesia is a disorder characterized by chronic respiratory tract infections, abnormally positioned internal organs, and the inability to have children (infertility). The signs and symptoms of this condition are caused by abnormal cilia and flagella.
Apart from the writing sections, all the five sections contain a total of 48 questions. Out of these 48 questions, 40 contribute towards the score in PCAT, while the remaining 8 questions are experimental questions that are not scored. Out of the two writing sections, one section is for experimentation.
According to Stacy Caldwell, the College Board vice president for the SAT and PSAT/NMSQT, more than 4 million students took the PSAT in October and about 1.2 million visits to the site have been made, with more than 1 million scores accessed.