为研究淹水时KNO3对甜樱桃根呼吸的影响，设四组盆栽甜樱桃，

更新 2022-09-03
科目生物
题型选择题
难度中等
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为研究淹水时KNO₃对甜樱桃根呼吸的影响，设四组盆栽甜樱桃，其中一组淹入清水，其余三组分别淹入不同浓度的KNO₃溶液，保持液面高出盆土表面，每天定时测定甜樱桃根有氧呼吸速率，结果如下图。据图下面判断准确的是

A. 细胞有氧呼吸生成CO₂的场所是细胞质基质与线粒体基质
B. 如图所示A、B、C中，单位时间内与氧结合的[H]最多的是B点
C. 图中结果显示，淹水时一定浓度的KNO₃对甜樱桃根有氧呼吸速率降低有减缓作用
D. 图中纵坐标可以选用CO₂释放量作为有氧呼吸速率的指标

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