医学微生物学习题及答案

选择题(每题1分,共30分)

A型题: 每一考题有A、B、C、D、E

最佳答案填

入题干后括号内。

1( )

A B C

构

D E

2( )

A B

C D R质粒的细菌

E F质粒的细菌

3( )

A B C LPS D E

多糖

4?( )

A. 因宿主细胞内有相应抑制物

B. 因宿主细胞DNA有关基因激活

C. 因宿主细胞缺乏有关酶

D. 因感染病毒有核酸缺失

E. 因感染病毒抗原性转变

5( )

A B C

D E

6( )

A Ames test

B transformation test

C fluctuation test

D replica plating test

E Widal test

7( )

A B C D

E

8. : ( )

A. 乙型溶血性链球菌

B. 金黄色葡萄球菌

C. 淋病奈

瑟菌

D. 肺炎球菌

E. 脑膜炎奈瑟菌

9. ( )

A. 细胞病变效应

B. 红细胞吸附

C. 细胞代

谢的改变

D. 干扰现象

E. 细胞培养液混浊

10( )

A B C D

E

11( )

A Streptococcus

B Staphylococcus

C Meningococcus

D Gonococcus

E Pneumococcus

12( )

A B C

呈分枝生

长

D E

13. ( )

A B C

磷脂

D E

14( )

A. 鼠伤寒沙门菌

B. 志贺菌

C. 蜡样芽胞

杆菌

D. 希氏沙门菌

E. 产肠毒素的金黄色葡萄球菌15

分离培养病原

( )

A B C

择鉴别培

养基

D E

16( )

A RNA和DNA

B C

格细胞内

寄生

D E

17( )

A B C

胞壁

D E

18? ( )

A B C

分生孢子

D E

19The main infection source of epidemic type B encephalitis virus is: ( )

A. patient

B. health carrier

C. young pig

D. culicine

E.

louse

20The main type of infection caused by Poliovirus is( )

A inappareent infection

B acute infection

C chronic infection

D latent infection

E slow virus infection

21At an office visit, a 38-year-old man complains of jaundice黄疸, dark urine,

anorexia厌食, abdominal pain, and malaise不适. Serologic tests are positive for both

HBeAg and HBsAg. Which statement most accurately describes the virus responsible

for these findings? ( )

A. Its genome is a messenger RNA (mRNA) that encodes a polyprotein.

B. Its genome is linear double-stranded DNA.

C. Its genome is RNA, but it replicates through a DNA intermediate.

D. Its replication requires a helper virus.

E. Its replication requires an RNA-dependent DNA polymerase.

22. Which step in viral replication is inhibited by protease inhibitor? ( )

A. Penetration

B. Uncoating

C. Transcription

D. Replication

E. Viral assembly

23. A 48-year-old man has been receiving blood products for hemophilia血友病

since childhood. He is now suffering from a low-grade fever, weight loss, thrush鹅口

疮, serious bouts of diarrhea, and symptoms of pneumonia. A deficiency in the

production of which substance would be most pronounced in this patient? ( )

A. Complement components

B. Immunoglobulin G (IgG)

C. Interferon-alpha (IFN-α)

D. Interferon-gamma (IFN-γ)

E. Interleukin-1 (IL-1)

24 A neonate is born with a small head, intracerebral calcification脑内钙化, rash,