[{"data":1,"prerenderedAt":65},["ShallowReactive",2],{"q-nurse-106-1-basic-medicine-017":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":35,"lastmod":64},"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-106-1-基礎醫學-017","nurse-106-1-basic-medicine-017",106,1,17,"在肌肉收縮與舒張過程（muscle contraction\u002Frelaxation cycle）中，ATP 結合於下列那一分子？",{"A":15,"B":16,"C":17,"D":18},"肌凝蛋白（myosin）","肌動蛋白（actin）","旋轉素（troponin）","旋轉肌凝素（tropomyosin）","A",null,[],"本題考點為肌肉收縮週期中 ATP 的結合位置。依滑動細絲學說,ATP 結合於肌凝蛋白（myosin）頭部,肌凝蛋白頭具 ATPase 可水解 ATP 取得能量,並使橫橋自肌動蛋白上鬆脫以重新擺動,故選A。B肌動蛋白（actin）提供肌凝蛋白結合的位點,但 ATP 並非結合於此。C旋轉素（troponin）結合的是鈣離子,鈣結合後移開旋轉肌凝素。D旋轉肌凝素（tropomyosin）平時遮蔽肌動蛋白上的結合位點,不與 ATP 結合。關鍵在辨識具 ATPase 活性者是肌凝蛋白頭部。","橫橋循環記法:ATP 結合→橫橋自 actin 鬆開→ATP 水解使頭部翹起蓄能→與 actin 結合形成橫橋→釋放 ADP 與磷酸產生動力衝程拉動細絲。故缺 ATP（如死亡後）橫橋無法鬆脫,造成屍僵。鈣離子則負責移開 tropomyosin 以開放結合位點。",[25,28,30,33],{"term":26,"count":27},"ATP",3,{"term":29,"count":27},"橫橋循環",{"term":31,"count":32},"肌凝蛋白",2,{"term":34,"count":11},"滑動細絲學說",[36,40,44,49,54,59],{"webId":37,"stem":38,"number":39,"year":10,"session":11},"nurse-106-1-basic-medicine-018","有關腦部代謝之敘述，下列何者正確？",18,{"webId":41,"stem":42,"number":43,"year":10,"session":32},"nurse-106-2-basic-medicine-034","下列那一器官遭受到可逆性傷害時，最常以脂肪變性（fatty change）來呈現？",34,{"webId":45,"stem":46,"number":47,"year":48,"session":11},"nurse-107-1-basic-medicine-048","下列那一個中樞神經系統部位是肌萎縮性側索硬化症（amyotrophic lateral sclerosis）的主要病變區？",48,107,{"webId":50,"stem":51,"number":52,"year":53,"session":32},"nurse-108-2-basic-medicine-006","下列有關肺部的敘述，何者正確？",6,108,{"webId":55,"stem":56,"number":57,"year":58,"session":32},"nurse-109-2-basic-medicine-050","下列抗心律不整的藥物，何者會延長動作電位的間期，且甲狀腺機能異常者需小心使用？",50,109,{"webId":60,"stem":61,"number":62,"year":63,"session":11},"nurse-111-1-basic-medicine-004","肺臟內進行氣體交換的呼吸膜（respiratory membrane）構造，主要是由那兩種細胞與結締組織共同構成？",4,111,"2026-09-04",1788510690927]