45 下列有關視網膜細胞瘤調控蛋白（retinoblastoma protein）的敘述，何者正確？

可結合E2F 轉錄因子，影響基因轉錄 可促進Rhodopsin kinase 之活化

其激.酶（Kinase）活性，可經由磷酸後被活化 為一個致癌基因

A

pRb prevents the cell from replicating damaged DNA by preventing its progression along the cell cycle through G1 (first gap phase) into S (synthesis phase).^[7] pRb binds and inhibits transcription factors of the E2F family, which are composed of dimers of an E2F protein and a DP protein

TUMOR SUPPRESOR GENE

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46 訊息傳遞之去敏感化（desensitization）在腎上腺素（epinephrine）的例子是經由？

對腎上腺素受體進行磷酸化 對腎上腺素受體進行去磷酸化

開放鉀離子通道 開放鈉離子通道

A

PHOSPHORYLATION!!!!

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47 在呼吸鏈（respiratory chain）中，下列何種enzyme complex 含有銅離子參與其電子的傳遞？

 NADH-Q oxidoreductase  succinate-Q reductase

 Q-cytochrome c oxidoreductase  cytochrome c oxidase

D

NADH - SUCCINATE - Q CYTOCHROME C OXIDOREUCTASE - CYT C OXIDASE

COPPER IN COMPLEX IV

2 COPPER NEEDED, DIVALENT : KAYA 4