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【判断题】
结晶分异作用晚期形成的岩浆矿床具典型的海绵陨铁结构。()A.
正确
B.
错误
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【单选题】下列关于重整制度的说法中，错误的是 ( )
A.
重整制度既关注债务清偿，也关注企业拯救，是债务清偿法和企业拯救法的结合，但是，企业拯救是主要的目标
B.
重整制度打破了私法和公法的传统界限，将私权本位和社会本位相调和
C.
重整是一个综合性的法律事件，一个由多种法律事实和法律效果聚合而成的民事法律关系变动的过程
D.
由于重整制度的主要目标是拯救企业，因此其涉及诸多实体问题，对这些实体问题的解决是它关注的重要内容，至于程序方面，则无关紧要
【多选题】Explain protein phosphorylation as molecular switches.
A.
In one major class of switch protein, the phosphate is added covalently by a protein kinase, which transfers the terminal phosphate group from ATP to the signaling protein; the phosphate is then removed by a protein phosphatase.
B.
The activity of any protein that is regulated by phosphorylation depends—moment by moment—on the balance between the activities of the protein kinases that phosphorylate it and the protein phosphatases that dephosphorylate it.
C.
Many of the switch proteins controlled by phosphorylation are themselves protein kinases, and these are often organized into phosphorylation cascades: one protein kinase, activated by phosphorylation, phosphorylates the next protein kinase in the sequence, and so on, transmitting the signal onward and, in the process, amplifying, distributing, and regulating it.
D.
Two main types of protein kinases operate in intracellular signaling pathways: the most common are serine/threonine kinases, which—as the name implies—phosphorylate proteins on serines or threonines; others are tyrosine kinases, which phosphorylate proteins on tyrosine.
【单选题】下列关于企业法人破产还债程序的表述，哪一说法是错误的?
A.
企业法人因严重亏损，无力清偿到期债务，债权人和债务人都有权申请宣告破产还债
B.
法院审理破产还债案件一律使用裁定，并一律不准上诉
C.
个体下商户或公民个人合伙不适用企业法人破产还债程序
D.
人民法院审理企、业法人破产还债案件必须组成合议庭
【判断题】Protein kinases are central to many signal-transduction pathways. Defects in signal-transduction pathways can lead to cancer and other diseases. ( )
A.
正确
B.
错误
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