單項(xiàng)選擇題下列核糖體活性部位中哪個(gè)是接受氨酰基tRNA的部位()

A.G因子
B.T因子
C.A位
D.P位


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1.單項(xiàng)選擇題細(xì)胞中含量最高的RNA是()

A.tRNA
B.mRNA
C.rRNA
D.snRNA

2.單項(xiàng)選擇題真核細(xì)胞核糖體的沉降系數(shù)及其大小亞基的沉降系數(shù)分別是()

A.80S,60S,40S
B.70S,50S,30S
C.80S,50S,30S
D.70S,40S,30S

3.單項(xiàng)選擇題M6P受體是在高爾基體的()

A.形成面
B.中間膜囊
C.成熟面
D.其它

4.單項(xiàng)選擇題真核細(xì)胞80S核糖體大小兩個(gè)亞基沉降系數(shù)分別為()

A.40s和50s
B.40s和60s
C.50s和60s
D.70s和80s