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 shows a correct difference in the blood conctz ;tkmw-s hal l/c+(whl7lf+j23g7yentration of various sub yzrlq)u/jjue*1,wlgqyn2 m823 qt 7wstueqrlj,jqw8 mu) z1tyl2/n7w 32y *gqances between the renal artery and renal vein?
A. Substance is Oxygen; Renal artery is Low; Renal vein High
B. Substance is Carbon dioxide; Renal artery is Low; Renal vein High
C. Substance is Glucose; Renal artery is High; Renal vein High
D. Substance is Urea; Renal artery is Low; Renal vein High
参考答案: B
本题详细解析:
Choice B is correct because carbon dioxide concentration is higher in the renal vein due to aerobic respiration in the kidney. Choice A is incorrect because oxygen concentration is higher in the renal artery; it is used by kidney cells for aerobic cellular respiration. Choice C is incorrect because glucose concentration is lower in the renal vein as some of it is used for metabolic processes in kidney cells. Choice D is incorrect because urea concentration is higher in the renal artery; urea is filtered out in the nephrons.
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