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 correctn3zp09v y3sey foyi)./ma 8zhn2q(vmslr insulin?
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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