生物选择题2

2025-02-27 04:44:51
推荐回答(5个)
回答(1):

楼上仁兄讲解精彩,在下佩服。
但是……“T细胞遇到抗体时候变成效应T细胞,产生淋巴因子白细胞介素二等东西增加效应B细胞产生抗体.”好像~……
我想提两点:
1:这是高中生物题,所以应从高中生物的基础上来讲。所以~浆细胞和效应B细胞可认为相同。
2:楼上仁兄讲……“T细胞遇到抗体时候变成效应T细胞,产生淋巴因子白细胞介素二等东西增加效应B细胞产生抗体.”在下认为应该是:T细胞遇到抗原时会分化产生效应T细胞,效应T细胞会与靶细胞(宿主细胞)亲密结合,同时效应T细胞会产生淋巴因子以增强效应T细胞的杀伤力,最终使靶细胞裂解。
所以这道题的答案应该是C

回答(2):

哎呀,最不爱给人讲课.
1题:选D,这么简单,A太简单,B有了氧气硝化细菌硝化作用进行,反硝化细菌只在无氧时候给氨转化成氮气,有了氧气它就不干了.C是给需氧微生物加氧气,它分解有机物,释放CO2,为植物光和作用提供原料,所以说提高光和作用效率,太牵强破题!D根吸收应该是无机的肥料,多级利用能量需要多个营养级,就一个破植物谈不上这个.
2题:选A都不用寻思,A酵母菌无氧呼吸,产生的产物是CO2和酒精,所以有气泡,乳酸菌,给葡萄糖分解成乳酸,在中间劈开,没有别的产物,葡糖不用讲了自己啥也不干.所以A对,B,也不对,无氧呼吸都产生热量,C肯定不对.D不对,因为如A回答的,乳酸菌产物有两个,加上葡萄糖就是三个,1个变三个,多了.
3题:选A.因为抗蛇毒血清有效成分是抗体,抗体只能由效应B细胞产生.别的哪有啊?T细胞遇到抗体时候变成效应T细胞,产生淋巴因子白细胞介素二等东西增加效应B细胞产生抗体.但是!答案C很容易被误解为对的.高中课本不讲浆细胞,浆细胞是和B细胞受刺激之后产生的和效应B细胞作用相同的细胞,它可以产生抗体,作用比效应B细胞要明显,这里的T细胞作用是呈递抗原的作用,并不起免疫作用.题中说起免疫反应,所以呈递作用的就不能算了,所以选A,至于BD,因为没有细胞能够产生抗体,不选.这题有点难度!

楼下的同学,矛盾是一分为二的,解决问题在于抓住主要矛盾,当主要矛盾和次要矛盾有冲突时候应该抓主要矛盾,放弃次要矛盾.
制备血清是制备抗体的过程,不是制备细胞.制备出来的东西要被用于别的生物上,帮助杀死抗原,所以效应T细胞在这里是次要矛盾,主要矛盾在于体液免疫,再说灭活病毒没多大能耐,不能感染到需要裂解细胞吧,谢谢哈哈.

回答(3):

CAA
第一题:挺牵强,一看就是高中的题原因是微生物分解腐殖质与提高光合作用效率无直接关系,即使再分解时产生二氧化碳,解决植物二氧化碳饥渴,也没有太大关系
第二题:酵母菌无氧呼吸产生二氧化碳,不用想
第三题:用排除法,因为是高中的题,应该没有浆细胞的事,产生抗体只有效应B细胞。抗原进入生物体后经过吞噬细胞分解(不成功)T细胞呈递抗原信息,效应B细胞产生抗体,效应T细胞产生辅助物,应该是这个过程

回答(4):

1.C
2.A
3.A

回答(5):

A A B

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