八年级生物上册18.2《微生物与人类的关系》练习题(新版)北师大版.doc

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1、1微生物与人类的关系1.在馒头房里,小明同学发现师傅们在蒸馒头时,先在发酵的面团里加一些纯碱溶液。你能说出其中的作用吗( )使馒头变白 增加甜味 除去发酵时产生的酸 产生二氧化碳使馒头体积膨胀A. B. C. D.2.四川的泡菜在全国都是非常有名的一种风味小菜。制作泡菜时要用特殊的坛子,坛口必须加水密封。密封坛口的目的是( )A.隔绝空气,抑制细菌的繁殖 B.阻止尘埃C.造成缺氧的环境,利于乳酸发酵 D.防止气体对流,利于醋酸菌进行无氧呼吸3.下列生物中,可产生抗生素的是:A.青霉 B.曲霉 C.酵母菌 D.肺炎双球菌4.艾滋病是有下哪那种微生物引起的?( ) .细菌 .真菌 .酵母菌 .病毒

2、5.制作下列食品时,用不着微生物的是( ) .蒸制馒头 .酿制米醋 .制作酸奶 .腌制咸菜6.下列物质中具有致癌作用的是( ).红曲霉产生的红曲霉素 .黄曲霉产生的黄曲霉素.根霉产生淀粉酶等酶类 .青霉产生的青霉素7.夏天一碗放在厨房的豆浆腐败变质这是因为( ).与空气接触使豆浆发生了变质.高温使豆浆发生了变质 .空气中的真菌和细菌在豆浆中繁殖使它变质 .时间久了豆浆就会发生变质8.头癣和灰指甲是由下列哪项引起的( ).细菌 .真菌 .病毒 .缺乏维生素9.到目前为止,下列物质不能通过基因工程用微生物生产的是( ).胰岛素 .乙肝疫苗 .干扰素 .性激素23参考答案7C学 科 网 , 最 大 最 全 的 中 小 学 教 育 资 源 网 站 , 教 学 资 料 详 细 分 类 下 载 ! 题号 1 2 3 4 5 6 7 8 9答案 C A A D D B C B D

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