[{"data":1,"prerenderedAt":68},["ShallowReactive",2],{"q-nurse-112-2-basic-medicine-031":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":37,"lastmod":67},"基礎醫學","basic-medicine","基礎醫學(包括解剖學、生理學、病理學、藥理學、微生物學與免疫學)",{"id":8,"webId":9,"year":10,"session":11,"subject":4,"number":12,"stem":13,"options":14,"answer":19,"answerNote":20,"images":21,"explanation":22,"explanationDeep":23,"topics":24,"freq":27},"nurse-112-2-基礎醫學-031","nurse-112-2-basic-medicine-031",112,2,31,"跨膜 G 蛋白偶合受體（G protein-coupled receptor）中的 Gs 蛋白，主要作用在下列何種酵素？",{"A":15,"B":16,"C":17,"D":18},"Tyrosine kinase","Phospholipase C","Adenylyl cyclase","Guanylyl cyclase","C",null,[],"本題考點在於 G 蛋白偶合受體中 Gs 蛋白的下游效應酵素。依訊號傳遞機轉，Gs（stimulatory G protein）活化後會刺激腺苷酸環化酶（adenylyl cyclase），催化 ATP 轉為第二傳訊者 cAMP，進而活化蛋白激酶 A，故選 C。A 酪胺酸激酶為受體型酪胺酸激酶（如胰島素受體）的路徑，不經 G 蛋白；B 磷脂酶 C 是 Gq 蛋白的下游酵素；D 鳥苷酸環化酶由一氧化氮或利鈉肽等經 cGMP 路徑活化，均非 Gs 的主要標的。","G 蛋白訊號分工記憶：Gs↑adenylyl cyclase→cAMP↑；Gi↓adenylyl cyclase→cAMP↓；Gq→phospholipase C→IP₃＋DAG→鈣釋放。β 腎上腺素受體走 Gs（cAMP 上升）、M2 蕈毒鹼受體走 Gi。cAMP 由磷酸二酯酶（PDE）分解，這也是咖啡因、theophylline（抑制 PDE）與部分藥物的作用點。可連結第二傳訊者系統與相關藥理一併複習。",[25,28,31,33,35],{"term":26,"count":27},"cAMP",4,{"term":29,"count":30},"G 蛋白偶合受體",1,{"term":32,"count":30},"Gs 蛋白",{"term":34,"count":30},"腺苷酸環化酶",{"term":36,"count":30},"第二傳訊者",[38,42,47,52,57,62],{"webId":39,"stem":40,"number":41,"year":10,"session":11},"nurse-112-2-basic-medicine-032","下列何種藥物的清除半衰期（elimination half-life）最長？",32,{"webId":43,"stem":44,"number":45,"year":46,"session":30},"nurse-113-1-basic-medicine-028","三陰性（triple negative）乳癌的定義不包含下列何者？",28,113,{"webId":48,"stem":49,"number":50,"year":46,"session":51},"nurse-113-3-basic-medicine-022","下列何者不是造成血漿滲透壓下降的原因？",22,3,{"webId":53,"stem":54,"number":55,"year":56,"session":30},"nurse-115-1-basic-medicine-020","下列那兩種神經膠細胞（glia cells）會形成髓鞘（myelin sheath）？",20,115,{"webId":58,"stem":59,"number":60,"year":61,"session":11},"nurse-106-2-basic-medicine-044","卵巢甲狀腺腫（struma ovarii）是屬於一種：",44,106,{"webId":63,"stem":64,"number":65,"year":66,"session":11},"nurse-107-2-basic-medicine-078","依波拉病毒（Ebola virus）是經由下列何者傳播？",78,107,"2026-09-04",1788510746406]