辽宁省辽阳市集美学校2018_2019学年高二生物上学期期中试题(扫描版).doc

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1 -辽宁省辽阳市集美学校 2018-2019 学年高二生物上学期期中试题(扫描版)- 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 -高二生物期中答案1-5CBCCA 6-10DBDCC 11-15 CBCCA 16-20 DBDAD 21-25ACDBB 26-30 BCCCD31-35AABDC 36-40 DDDDD 41、 局部电流(电信号) 神经递质 肝糖原分解(脂肪等非糖物质转化)(2)上升( “增加”或“提高” ) 激素 c 分泌过 多会抑制下丘脑和垂体分泌物质 a、b,从而使激素 c 浓度下降( 或负反馈调节)(3)T 淋巴 淋巴因子 情绪压力长期得不到缓解42、(1)抗原 效应 T 细胞 (2)同品系大鼠间肝移植不发生免疫 排斥反应乙 (3) 促进 诱导 T 淋巴细胞凋亡 IL-2 合成缺陷 43、 (1)F2 才发生性状分离,开始出现所需要的表现型 (连续)自交 (2 )单 A B C G H(3) 基因突变 染色体变异 (4)基因频率 (5)B44、 (1) 有丝分裂间期 减数第一次分裂 前的间期 (2)细胞核 线粒体 核糖核苷酸、ATP 核孔 (3)25% (4) 多个 反密码子 1 200

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