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 f:vdzb evf+ lq 07z/nzud74b2 xor gp7 (-9ub: zugf *jecvclucagon?
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: D
本题详细解析:
Choice D is correct because low blood glucose concentration is detected by the alpha cells in the pancreas and they respond by releasing glucagon. Choice A is incorrect because high blood concentration does not cause the secretion of glucagon and it is not secreted by beta cells. Choice B is incorrect because high blood concentration does not cause the secretion of glucagon, it causes the release of insulin. Choice C is incorrect because glucagon is not secreted by beta cells.
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