複選題6. 有關自律神經的相關敘述，下列哪些正確？ (A)副交感神經的節前神經元，起源自第一胸段脊髓(T1)至第二腰段脊髓(L2) (B)一個節前神經元可以對應多個節後神經元 (C)節後神經元不具有髓鞘 (D)交感神經的節前神經元較短 (E)副交感神經的分布範圍較交感神經廣泛。

複選題
6. 有關自律神經的相關敘述，下列哪些正確？
(A)副交感神經的節前神經元，起源自第一胸段脊髓(T1)至第二腰段脊髓(L2)
(B)一個節前神經元可以對應多個節後神經元
(C)節後神經元不具有髓鞘
(D)交感神經的節前神經元較短
(E)副交感神經的分布範圍較交感神經廣泛。

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統計： A(8), B(10), C(7), D(17), E(6) #3233827

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1. 題目解析本題針對自律神經系統的...

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5. Humans have harmless E. coli strains that reside in the intestines. O157:H7 is an E. coli strain reported to cause several food poisoning deaths. Evidence suggests that the virulence of O157:H7 is caused by genes from a virus that infects bacteria. Considering this evidence, which of the following statements most likely explains how the O157:H7 population acquired the genetic variation that distinguishes it from the harmless E. coli strains? (A) The virus entered the bacterial cell, allowing the bacteria's cellular machinery to create new viruses. (B) Viral envelope proteins bound receptors on the bacteria, allowing the viral genetic material to enter the cytoplasm and be translated into proteins that increased that bacterium's virulence. (C) The virus entered the cell and reassorted to acquire specific genes from the bacteria to increase the virulence of the virus. (D) The virus infected the bacterium, and the bacterial population replicated with a copy of the phage genome in each new bacterium.

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