A-A+
According to the passage an injection of insu
问题详情
According to the passage, an injection of insulin was most similar in its effect on rats to an injection of
A．tyrosine.
B．leucine.
C．blood.
D．tryptophan.
E．protein.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
给老鼠打一针胰岛素，相当于给它打一针：文中胰岛素、色氨酸都是促进血清素分泌的。∴D正确。色氨酸。
