Free Test Prep PCAT Exam Questions

When blood flow to human tissue is interrupted, the lack of sufficient blood supply is called ischemia. Ifischemia is not restored quickly, the affected tissue may undergo a process called infarction, which involves aseries of chemical changes that damage the tissue. The lack of blood supply results in lack of oxygen, and thuslactic acidosis. Mitochondrial dysfunction results. Microscopic examination and chemical analysis of ischemiccells reveal membrane degeneration, excessive calcium (Ca+) inside the cell, and free radical formation,accompanied by a reactive inflammation and free fatty acid formation. A research experiment is designed toevaluate the response of infarcted tissue to intra-arterial administration of an antioxidant. Preliminary resultsdemonstrate that follow-up evaluation of tissue exposed to intra-arterial antioxidant injection resulted, onaverage, in a smaller area of infarcted tissue after seven days when compared to controls without exposure tothe antioxidant. It was noted that 70% of the patients who demonstrated smaller areas of infarction also had anotable decease in edema of the ischemic tissue lasting about 6 to 10 hours after injection.Which of the following chemical moieties forms the backbone of DNA?

Paul’s average bowling score for a series was 164 and Dave’s was 158. If each of them bowled 4 games, howmuch greater was Paul’s total score for the series than Dave’s?

What is the oxidation state of each nickel on the reactant side of the following reaction?2 NiO(OH) + Cd + 2 H2O –> 2 Ni(OH)2 + Cd(OH)2

Jim has 10 apples and he gives 7 to Bill. Now Bill has 3 times as many apples as Jim had. How many applesdid Bill have to begin with?

Which of the following organisms has a circulatory system in which blood circulates in an internal cavity called a hemocoel?