USABO Open Final Exam 2024 Questions and Answers.

USABO Open Final Exam 2024 Questions and Answers. Questions 1 and 2. Please use the following options to answer the following three questions. Each choice may be used once, more than once, or not at all. A. Actin. B. Myosin. C. Dynein. D. Kinesin. E. Cyclin. 1. In the extracellular matrix of an animal cell, you would like to test the binding partner of integrins in vitro. Integrins would most likely require firm attachment to which of the above option? A 2. You are working with Dr. Lee at University of Wisconsin-Madison to investigate cytokinesis in a newly discovered marine worm. You generated antibodies to conserved proteins involved in cell division in other organism to look for proteins that localize to important structures during cell division. What molecular motor protein should you look for in the contractile ring? B 3. An unnamed acid has a pKa value of 4.76. Which of the following is closest to the ratio of the concentration of its protonated to deprotonated forms in a pH environment of 6.8? A. 100 : 1. B. 10 : 1. C. 1 : 1. D. 1 : 10. E. 1 : 100. Page 2 4. Select the answer choice that correctly describes which chemical species are oxidized, reduced, and phosphorylated in the process of oxidative phosphorylation. Choice Oxidized Reduced Phosphorylated A