• University of California, Davis

• BIS 104

BIS104-01 Final Exam, Form A 1 Instructions: There are 16 pages and 60 questions of equal value in this exam DO NOT OPEN UNTIL INSTRUCTED. The exam will end at 12:30 am. Mark down your test form (A, B, C or D) on the scantron. This is FORM A. If you think there is an error in the exam, notify the proctors. The proctors can’t help you define terms or clarify wording. If you think there are two correct answers, only pick the best one. For each question there is one best answer. Fill out your name and student identification number on the blue Scantron Form with a #2 pencil. Fill in your answers on the scantron form with a #2 pencil. For each question only choose one answer (the best answer) and fill in your selection clearly and completely. If you change an answer, make you sure you erase it completely. BIS104-01 Final Exam, Form A 2 1. Platlets are activated by Ca++ resulting in rapid F-actin growth. Which of the following happens to make F-actin grow rapidly? A. gelsolin caps the minus ends of microfilaments making the Cc 0.1 m. B. profilin activity beats out thymosin activity, leading to a massive release of Gactin and growth C. thymosin activity beats out profilin activity, leading to a massive release of Gactin and growth D. CapZ is removed from the plus ends of actin filaments E. gelsolin cleaves microfilaments 2. Viagra induces blood flow by relaxing the smooth muscles surrounding blood vessels. This is accomplished __________________. A. by stimulating the nitric oxide transmembrane receptor which increases cAMP. B. by blocking cGMP phospho diesterase. C. by blocking the nitric oxide transmembrane receptor which activates tyrosine kinase activity. D. by inactivating guanylyl cyclase. E. through IP3 signaling which blocks Ca++ release in muscles. 3. Which of the following statements is true about UNC-83 and UNC-84. A. UNC-83 interacts with both Lamin and the KASH domains. B. UNC-84 and UNC-83 function to connect the nucleus to microfilaments. C. UNC-84 and UNC-83 recruit dynein and kinesin to the surface of the nucleus. D. UNC-84 localizes to the outer nuclear membrane while UNC-83 localizes to the inner nuclear membra