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【单选题】
G蛋白具有自我调节活性的功能,下列哪种说法可以解释G蛋白活性丧失的原因( )。
A.
α亚基的GTPase活性
B.
效应物的激活
C.
与受体的结合
D.
亚基的解离
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】下列何种情况下，当事人可以解除合同?( )
A.
因不可抗力致使合同不能适当履行
B.
在履行期限届满之前，当事人一方明确表示或者以自己的行为表明不履行主要债务
C.
当事人一方迟延履行主要债务
D.
当事人一方迟延履行债务或者有其他违约行为致使实现合同目的困难
【单选题】有如下事件过程：Private Sub Form_Load() Show Dim Arr() As Variant Arr = Array(1, 3, 5, 7, 9, 11, 13, 15) Call converse(Arr) For i = 0 To 7 Print arr(i); Next iEnd Sub 以上程序的功能是，通过调用Converse过程，将数组Arr中的元素逆序存放并输出...
A.
Private Sub converse(dim a() as Variant ) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
B.
Private Sub converse(dim a() as Variant) Dim T Dim J As Integer J = (LBound(A) + UBound(A)) / 2 For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
C.
Private Sub converse(a() As Variant) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
D.
Private Sub converse(a() As Variant) Dim T Dim J As Integer J = Int((LBound(A) + UBound(A)) / 2) For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub