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Continuity and Change D.9 Homeostasis (id: e37d4b8af)

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admin 发表于 2024-2-5 20:19:06 | 显示全部楼层 |阅读模式
本题目来源于试卷: Continuity and Change D.9 Homeostasis,类别为 IB生物学

[单选题]
Which row is correct for fcs 9*,jb ovnct24lh 7ld )lu )g)-8;zgrqg w ej5m8 w+g-iyogtvsl+3insulin?

A. Stimulated by: High blood glucose concentration ; Secreted by : Beta cells
B. Stimulated by: High blood glucose concentration; Secreted by : Alpha cells
C. Stimulated by: Low blood glucose concentration; Secreted by : Beta cells
D. Stimulated by: Low blood glucose concentration; Secreted by : Alpha cells


参考答案:  A


本题详细解析:
Choice A is correct because high blood glucose concentration is detected by the beta cells in the pancreas and they respond by releasing insulin. Choice B is incorrect because alpha cells produce glucagon and not insulin. Choice C is incorrect because the release of insulin is triggered by high blood glucose concentration and not low blood glucose concentration. Choice D is incorrect because low blood glucose concentration does not cause the release of insulin and insulin is not secreted by alpha cells.

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