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【判断题】
细菌质膜上含有ABC转运蛋白,能将细菌细胞中的营养物逆着浓度梯度转运到细胞外。( )
A.
正确
B.
错误
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举一反三
【单选题】膜内外Na+和K+浓度梯度的维持是由于
A.
膜在安静时对K+通透性大
B.
膜在兴奋时对Na+通透性大
C.
Na+和K+易化扩散的结果
D.
膜上Na+-K+泵的作用
E.
膜上ATP供能的作用
【单选题】Imagine eating everything delicious you want—with none of the fat. That would be great, wouldn"t it New "fake fat" products appeared on store shelves in the United States recently, but not everyone is...
A.
It may impair the digestive system.
B.
It may affect the overall fat intake.
C.
It may increase the risk of cancer.
D.
It may spoil the consumers" appetite.
相关题目：
【单选题】膜内外Na+和K+浓度梯度的维持是由于
A.
膜在安静时对K+通透性大
B.
膜在兴奋时对Na+通透性大
C.
Na+和K+易化扩散的结果
D.
膜上Na+-K+泵的作用
E.
膜上ATP供能的作用
【单选题】Imagine eating everything delicious you want—with none of the fat. That would be great, wouldn"t it New "fake fat" products appeared on store shelves in the United States recently, but not everyone is...
A.
It may impair the digestive system.
B.
It may affect the overall fat intake.
C.
It may increase the risk of cancer.
D.
It may spoil the consumers" appetite.
参考解析：
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