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.
The PSAT is divided into two sections: Math and Evidence-Based Reading & Writing. Because there is no penalty for guessing, a student's raw score for both of the main test areas is the number of questions answered correctly. Raw scores are then converted to scaled scores ranging between 160 and 760 (760 is the highest possible score for each section). The raw scores are added together for the total PSAT score, or Selection Index, which ranges between 320 and 1520. Unlike the SAT, the PSAT does not contain a scored essay portion. However, the College Board will provide high schools with the option of administering a practice essay portion, called ScoreWrite.