内容发布更新时间 : 2024/12/23 13:28:08星期一 下面是文章的全部内容请认真阅读。
E.大多G+菌产生
38.关于荚膜,下述错误的是 ··················································· ( B ) A.是细菌的特殊结构 C.与毒力有关
E.细菌失去荚膜毒力减弱
39.G+菌细胞壁特有成分是 ······················································ ( D ) B.是一种外毒素 D.能抵抗吞噬
A.多糖 B.粘肽 C.脂蛋白 D.磷壁酸
E.蛋白质
40.食品的低温保存是 ···························································· ( A.消毒 B.防腐 C.灭菌 D.无菌
E.以上都不是
41.与细菌致病作用有关的代谢产物是 ······································· ( A.维生素 B.热原质 C.色素 D.细菌素
E.抗生素
42.红霉素的抗菌原理是 ························································· ( A.破坏细菌的核酸 B.使菌体蛋白脱水变性 C.抑制细胞壁合成 D.使细胞水肿裂解
E.抑制蛋白质合成
43.大肠埃希菌引起的尿路感染是因为 ······································· ( A.长期使用广谱抗生素 B.多种细菌交叉感染 C.两种细菌重复感染 D.细菌寄居部位改变
E.机体抵抗力降低
44.病原菌侵入血流,大量繁殖,引起明显临床症状称为 ··············· ( A.败血症 B.菌血症 C.脓毒血症 D.毒血症
E.病毒血症
45.G-菌的热原质是细胞壁中的 ················································ (
6
B ) B ) E ) D ) A ) D )
A.脂蛋白 C.磷脂 E.类脂
B.粘肽 D.脂多糖
46.关于菌毛、错误的是 ························································· ( E ) A.较鞭毛短而细 B.成分为蛋白质 C.性菌毛能传递耐药基因 D.能吸附上皮细胞
E.有菌毛的细菌致病力弱
47.利用干烤法灭菌的最适温度,时间为 ···································· ( A.56℃,30分钟 B.100℃,30分钟 C.100℃,2小时 D.160~170℃,2小时
E.140~150℃,2小时
48.细菌的繁殖方式为 ···························································· ( A.无性二分裂 B.有性二分裂 C.二分裂 D.复制方式
E.出芽方式
49.能产生外毒素的病原体有 ··················································· ( A.G—菌
B.G+菌 C. G+菌和部分G—菌 D. G—菌与病毒
E. G+菌与螺旋体
50.内毒素的主要毒性成份为 ··················································· ( A.类脂 B.类脂A C.核心低聚糖 D.特异性多糖
E.蛋白质
51.乙醇杀菌力最强的浓度为 ··················································· ( A.100% B.95% C.80% D.70~75%
E.65%
52.受体菌直接摄入供体菌游离的DNA称 ·································· ( A.接合 B.转化 C.转导
D.溶原性转化
7
D ) A ) C ) B ) D ) B ) E.基因突变
53.维持细菌固有外形的结构是 ················································ ( A ) A.细胞壁 C.细胞质 E.荚膜
54.在普通光学显微镜下不能见到的细菌特殊结构是 ····················· ( D ) B.细胞膜 D.中介体
A.荚膜 B.芽胞 C.鞭毛 D.菌毛
E.异染颗粒
55.细菌中一种染色体外的遗传物质是 ······································· ( A.质粒 B.核质 C.中介体 D.核蛋白体
E.异染颗粒
56.供体菌的质粒转入受体菌的方式为 ······································· ( A.溶原性转换 B.转化 C.转导 D.接合
E.基因突变
57.与细菌耐药性有关的遗传物质是 ·········································· ( A.质粒 B.细菌核糖体 C.性菌毛 D.毒性噬菌体
E.异染颗粒
58.细菌毒力的强弱取决于 ······················································ ( A.机体抵抗力的大小 B.细菌侵袭力及细菌毒素 C.细菌侵入机体的部位 D.细菌侵入机体的数量
E.细菌能否产生芽胞
59.血清最好的除菌方法是 ······················································ ( A.巴氏消毒法 B.煮沸法 C.高压蒸气灭菌法 D.紫外线照射法
E.滤过除菌法
60.下列物质中不是细菌合成代谢产物的是 ································· (
8
A ) D ) A ) B ) E ) D )
A.色素 C.热原质 E.抗生素
B.细菌素 D.抗毒素
61芽胞与细菌有关的特性是. ·················································· ( C ) A.抗吞噬 B.产生毒素 C.耐热 D.粘附于感染部位
E.侵袭力
62.细菌细胞壁的基础成份是 ··················································· ( A.多糖 B.肽聚糖 C.磷壁酸 D.脂蛋白 E.脂多糖
63.紫外线的杀菌机理是 ························································· ( A.破坏DNA构型 B.破坏酶系统 C.破坏菌体蛋白 D.干扰蛋白质合成 E.裂解肽聚糖
64.G+与G-细菌的肽聚糖结构的主要区别在于 ····························· ( A.聚糖骨架 B.四肽侧链 C.五肽交联桥
D.β-1,4连苷键 E.N-乙酰葡萄糖胺与N-乙酰胞壁酸的排列顺序
65.判断彻底灭菌的依据是 ······················································ ( A.细菌繁殖体被完全消灭 B.细菌菌毛蛋白变性 C.芽胞被完全消灭 D.鞭毛蛋白被破坏
E.细菌的荚膜被破坏
66.防止或抑制微生物生长繁殖的方法称为 ································· ( A.消毒 B.灭菌 C.无菌 D.防腐
E.无菌操作
67.与动物细胞结构相比较,细菌所特有的一种重要结构是 ············ ( A.核蛋白体(核糖体) B.线粒体 C.高尔基体
D.细胞膜
9
B ) A ) C ) C ) D ) E ) E.细胞壁
68.与细菌运动有关的结构是 ··················································· ( A ) A.鞭毛 C.纤毛 E.轴丝
69.细菌经革兰染色后,如果为阴性,其着色应是 ························ ( A ) B.菌毛 D.荚膜
A.红色 B.蓝色 C.深紫色 D.蓝紫色
E.绿色
70.与细菌粘附于粘膜的能力有关的结构是 ································· ( A.菌毛 B.荚膜 C.中介体 D.胞浆膜
E.鞭毛
71.与芽胞的耐热性无关的因素是 ············································· ( A.位于菌体的一端 B.含水量少 C.有多层致密结构 D.有耐热酶
E.芽胞壁厚
72.细菌所具有的细胞器是 ······················································ ( A.高尔基体 B.内质网 C.纺锤体 D.线粒体
E.核蛋白体
73.与致病相关的细菌结构是 ··················································· ( A.中介体 B.质粒 C.异染颗粒 D.芽胞
E.荚膜
74.经革兰染色为深紫色(即阳性)的微生物是 ··························· ( A.支原体 B.链球菌 C.淋病奈氏菌 D.衣原体
E.脑膜炎奈氏菌
75.细菌缺少下列某种成分或结构仍能生存,这种成分或结构是 ······ (
10
A ) A ) E ) E ) B ) A )