2021-2022英语周报高一外研提升答案

29.(9分,除标注外.每空1分)(1) <萌发的小麦种子的细胞呼吸方式小麦种子有氧呼吸消耗的氧气量(2分)(2)细胞质基质、线粒体上移4(2分)<【解析】(1)图甲中a液面变化表示种子细胞呼吸消耗的氧气量与释放的co:量之间的差值,若只进行有氧呼吸,液面不变;若进行无氧呼吸,则液面下降。b液面变化表示小麦种子有氧呼吸消耗的氧气量,b液面会上升,所以a小于b。本实验探究的是萌发的小麦种子的细胞呼吸方式。(2)图乙中实验的前3h,室内co2浓度上升速率保持不变,3-6h室内co2浓度上升速率减慢,说明前3h叶肉细胞不进行光合作用,只进行呼吸作用,所以产生atp的场所是细胞质基质、线粒体。植物光合作用吸收绿光最少.所以使用相同强度的绿光进行实验时,光合作用减弱,细胞呼吸不变,吸收co2将减少,所以c点上移。当呼吸速率与光合速率相等时从外界吸收、释放co4的速率为0,所以呼吸速率与光合速率相等的时间点有4个,即6、18、30、42h。实验中前24h温室内的co2浓度无变化,后24h温室内的co)2浓度下降,所以该植物前24h有机物积累量为q,后24h有机物积累量大于0.所以前24h有机物积累量小于后24h有机物积累量。< p>

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