[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-447302-105":3,"detail-sidebar-cat-0-en-105":80,"doc-detail-447302-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":73,"head_meta":75,"extra_data":77,"updated_unix":79},105,"en","usabo-16-semifinal-examination-answers","USABO 16 Semifinal - Examination Answers","","USABO semifinal examination materials dated March 14 to March 18, 2016, providing instructions for completing required student certification information and using a scantron to answer Parts A and B. The question set covers multiple-choice concepts in cellular physiology, action potential propagation, muscle cross-bridge mechanics, capillary and lymph formation, respiratory gas movement, experimental logic for gene sufficiency in skeletal muscle differentiation, acid-base chemistry, thyroid enlargement causes, oxygen delivery from an affinity curve, and core kidney function statements.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/usabo-16-semifinal-examination-answers/447302/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/usabo-16-semifinal-examination-answers/447302.png","ImageObject",300,407,{"name":42,"@type":43},"Danger Angel","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-20","2026-09-29",true,{"@type":52,"interactionType":53,"userInteractionCount":33},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58,64,68],{"name":59,"@type":60,"acceptedAnswer":61},"What must be completed to allow the exam to be graded?","Question",{"text":62,"@type":63},"The student certification form must be fully completed, including all requested information and the required signature. The exam cannot be graded without completion of this form.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"How should students answer the questions in Parts A and B?",{"text":67,"@type":63},"Students should use their scantron to answer all questions in Parts A and B.",{"name":69,"@type":60,"acceptedAnswer":70},"What type of questions are included in Part A?",{"text":71,"@type":63},"Part A consists of multiple-choice questions where each question is valued at 1 point unless otherwise indicated.","https://schema.org",{"og:url":32,"og:type":74,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":76,"canonical":32},"index,follow",{"doc_id":78,"site_id":7},447302,1790821577,{"code":4,"msg":81,"data":82},"success",[83,87,91,94,99,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":84,"show_sort_weight":85,"slug":86},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":88,"show_sort_weight":89,"slug":90},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":92,"slug":93},70,"exam",{"id":95,"doc_module":4,"doc_module_name":25,"category_name":96,"show_sort_weight":97,"slug":98},5,"Comic",60,"comic",{"id":100,"doc_module":4,"doc_module_name":25,"category_name":101,"show_sort_weight":102,"slug":103},6,"Technology",50,"technology",{"id":105,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},7,"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":95,"slug":129},19,"General","general",{"code":4,"msg":81,"data":131},{"doc_id":78,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":33,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":145},962090769052,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","USABO SEMIFINAL EXAMINATION  \nMarch 14 to March 18, 2016  \nRead the directions included with the Student Certification Form provided by your teacher. Be certain to complete all requested information and to sign the Student Certification Form. Your exam cannot be graded without completion of this form. Use your scantron to answer all questions in Parts A and B.  \nPART A: Each question is valued at 1 point unless indicated otherwise.  \n1. Consider a cell bathed in a solution mimicking normal ECF. If [K⁺] was raised to  \n100 mM in the ECF, but everything else about the ECF and the cell stayed the same, we would expect that  \nA. The membrane potential would fall.  \nB. The membrane potential would stay the same.  \nC. The membrane potential would rise.  \nD. The membrane potential would oscillate slowly.  \nE. The membrane potential would oscillate rapidly.  \n2. Action potentials propagate along an axon because  \nA. Each AP alters nearby membrane shape, opening mechanically-gated Na⁺ channels in adjacent regions of the axon.  \nB. Each AP alters nearby membrane shape, opening mechanically-gated Ca²⁺ channels in adjacent regions of the axon.  \nC. Each AP alters nearby membrane potential, opening voltage-gated Na⁺ channels in adjacent   regions of the axon.   \nD. Each AP alters nearby membrane potential, opening voltage-gated Ca²⁺ channels in adjacent regions of the axon.  \nE. Each AP alters nearby membrane potential, opening mechanically-gated K⁺ channels in adjacent regions of the axon.  \n3. During the cross-bridge cycle involving myosin and actin, which if the following events most directly triggers the power stroke in myosin?  \nA. ATP binding to myosin.  \nB. Myosin releasing actin.  \nC. ATP hydrolyzing to form ADP and Pi.  \nD. Energized myosin binding to actin.  \nE. Ca²⁺ binding to myosin.  \n4. Which of the following statements about capillaries is FALSE?  \nA. They are the blood vessel type with the thinnest walls.  \nB. They are the vessels with the narrowest diameter.  \nC. Blood moves through the capillaries at a lower velocity than other vessels.  \nD. More blood moves through the combined capillaries each minute than through the   combined arteries.   \nE. All of these are true.  \n5. Which of the following changes, by itself, would tend to make lymph form more slowly?  \nA. An increase in capillary blood pressure.  \nB. An increase in the osmotic concentration of the interstitial fluid.  \nC. An increase in the osmotic concentration of the blood plasma.   \nD. Two of the above could both make lymph form more slowly.  \nE. All of the above could make lymph form more slowly.  \n6. Which of the following statements is TRUE?  \nA. Oxygen moves from the atmosphere into the alveoli by diffusion and from the alveoli into the blood by bulk flow.  \nB. Oxygen moves from the atmosphere into the alveoli by bulk flow and from the alveoli into   the blood by diffusion.   \nC. Oxygen moves from the atmosphere into the alveoli and from the alveoli into the blood by diffusion.  \nD. Oxygen moves from the atmosphere into the alveoli and from the alveoli into the blood by bulk flow.  \nE. Oxygen does not move from the atmosphere to the blood.  \n7. Which of the following experimental results would specifically show that myoD expression is sufficient for skeletal muscle differentiation?  \nA. Staining for MyoD protein reveals it to be only expressed in skeletal muscle tissue.  \nB. Deleting the MyoD gene in mice results in normal skeletal muscles, while deleting both the MyoD and Myf-5 genes results in immobile mice that do not survive birth.  \nC. The Belgian Blue breed of cattle, which develops hyperplasia (increased cell number) of skeletal muscle fibers, was shown to carry a loss-of-function mutation in myostatin, a gene repressed by MyoD.  \nD. Mutations which disrupt the myoD DNA binding site upstream of the myoD gene results in incomplete skeletal muscle differentiation.  \nE. Introducing a plasmid expressing MyoD into fat cells or fibroblasts causes them to ex","cbCairATDZAxJv7k","https://ap.wps.com/l/cbCairATDZAxJv7k","pdf",930434,38,"English","# USABO Semifinal Examination\n## Instructions and Student Certification Form\n## Part A (Multiple-Choice Questions)","[{\"question\":\"What must be completed to allow the exam to be graded?\",\"answer\":\"The student certification form must be fully completed, including all requested information and the required signature. The exam cannot be graded without completion of this form.\"},{\"question\":\"How should students answer the questions in Parts A and B?\",\"answer\":\"Students should use their scantron to answer all questions in Parts A and B.\"},{\"question\":\"What type of questions are included in Part A?\",\"answer\":\"Part A consists of multiple-choice questions where each question is valued at 1 point unless otherwise indicated.\"}]","USABO 16 Semifinal - Examination Answers | PDF",1790719703,96]