أسئلة الهيئة السعودية للتخصصات الصحية | الاحياء الدقيقة (الميكروبيولوجي) (2)

الأخصائيين

الأحياء الدقيقة  (الميكروبيولوجي) (2)

1.     It protects bacteria from antibiotics

a.     Capsule

b.     Cell membrane

c.      Flagella

d.     Fimbria

2.     Vibro cholera is:

a.     Mono –trichous bacteria

b.     Atrichous bacteria

c.      Lopho-trichous bacteria

d.     Peri-trichous bacteria

3.     Short rods, motile by peritrichous flagella

a.     Spirochaeta

b.     Lactobacillus

c.      Escherichia coli

d.     Vibrio

4.     To take up soluble DNA fragments derived from other, closely related species is:

a.     Mutation

b.     Transformation

c.      Transduction

d.     Conjugation

5.     Tuberculosis are

a.     micro-airophilic

b.     Facultative anaerobic

c.      Obligatory anaerobic

d.     Obligatory aerobic

6.     According to pH, Lactobacillus is

a.     Neutrophlic bacteria

b.     Acidophilic bacteria

c.      Basophilic bacteria

d.     None of the above

7.     Bacteria without cell Wall

a.     Chlamydia

b.     Rickettsia

c.      Mycoplasma

d.     d- Spirochetes

8.     Brucella Melitensis is

a.     Obligatory aerobic bacteria

b.     Obligatory anaerobic bacteria

c.      Facultative anaerobic bacteria

d.     Micro-aerophilic bacteria

9.     Pseudomonas aeroginosa is

a.     Peri-trichous bacteria

b.     Lopho-trichous bacteria

c.      Amphi-trichous bacteria

d.     Monotrichous bacteria

10.                 Genetic information of bacteria is carried on

a.     Messenger RNA

b.     Transfer RN|A

c.      Transcript RNA

d.     Double – Stranded DNA

11.                 Thermophilic bacteria grow at

a.     60 – 80 °C

b.     0 - 20°C

c.      37°C

d.     d- 100 - 120°C

12.                 Acidophilic bacteria grow at

a.     pH 7.2 – 7.4

b.     pH 5.0 – 5.5

c.      pH 8.5 – 9.0

d.     None of the above

13.                 Mycoplasma is

a.     Neutrophilic bacteria

b.     Acidophilic bacteria

c.      Basophilic bacteria

d.     All of the above

14.                 It is the adaptation of bacteria to the fresh medium

a.     Lag phase

b.     Decline phase

c.      Logarithmic Phase

d.     Stationary phase

15.                 Bacteria which do not cause hemolysis is

a.     Beta-Hemolytic

b.     Alpha-Hemolytic

c.      Gama Hemolytic

d.     None of the above

16.                 Normal flora of Lower intestine are all of the following except:

a.     Staphylococci

b.     Diphtheroids

c.      Shigella

d.     Lactobacillus

17.                 Opportunistic pathogens are all of the following except:

a.     Cause a disease when the host defense are suppressed.

b.     Are normal flora of healthy body

c.      Are greatly harmful

d.     Do not invade the body or tissue.

18.                 For disinfection of mattresses :

a.     Hot air oven

b.     Autoclave

c.      Ethylene Oxide

d.     Hydrogen Peroxide

19.                 Pyschrophilic bacteria grow at:

a.     10°C

b.     6°C

c.      14°C

d.     37°C

20.                 Bacteria which contain chlorophyll

a.     Heterotrophic bacteria

b.     Autotrophic bacteria

c.      Photosynthetic bacteria

d.     All of the above

21.                 Tricophyton is one of

a.     Yeast

b.     Moulds

c.      Dermatophyte

d.     Dimorphic Fungi

22.                 Plastomyces is one of

a.     Dermatophytes

b.     Dimorphic Fungi

c.      Yeast

d.     Moulds

23.                 Color of gram negative bacteria is

a.     Violet

b.     Green

c.      Red

d.     Black

24.                 Acid Fast Bacteria

a.     Salmonella

b.     Shigella

c.      M. Tuberculosis

d.     E.Coli

25.                 Spherical or avoid cells occurring in chains

a.     Staphylococci

b.     Streptococci

c.      Lactobacillus

d.     Spiro chaeta

26.                 ……………… carries the genetic information

a.     the envelope

b.     the capsid

c.      the nucleic acid

d.     the prion

27.                 …………………… may be seen under light microscope

a.     rota virus

b.     influenza virus

c.      herps virus

d.     pox virus

28.                 viruses may be:

a.     monomorphic

b.     pleomorphic

c.      dimorphic

d.     all of the above

29.                 viral capside is formed of:

a.     protein

b.     glycogen

c.      lipoprotein bilayer

d.     glycoprotein

30.                 class III in Baltimor classification is:

a.     double stranded DNA viruses

b.     single stranded DNA viruses

c.      double stranded RNA viruses

d.     single stranded RNA viruses

31.   Hierarchial virus classification system use the following characters except:

a.     nature of nucleic acid

b.     capside symmetry

c.      diameter of viron & capside

d.     virus molecular weight

32.                 in viral replication which is true:

a.     penetration is the 1st step

b.     assembly is the last step

c.      relaease is the last step

d.     all of the above

33.                 viron:

a.     may be extracellular phase of virus

b.     may be intracellular phase of virus

c.      can grow and replicate

d.     means “ virus – like “

34.                 pleomorphic viruses means :

a.     virus which have constant shape

b.     virus that may appear in 2 forms

c.      virus that have not a constant morphology

d.     virus that have spherical shape

35.                 vapor of gold is used in :

a.     shadow casting technique

b.     negative staining technique

c.      positive staining technique

d.     non of the above

36.                 direct diagnosis of virus :

a.     ELISA Antibody

b.     CFT

c.      IFT

d.     PCR virus

37.                 all of the following are required in cell culture except:

a.     neutral PH

b.     presence of buffer salts

c.      presence of antibiotics

d.     incubation at 20 C (( 30-37 C))

38. all of the following are diagnostic molecular biological technique except:

a.     PCR

b.     ELISA

c.      nucleic acid hyperdization

d.     DNA finger printing

39.                 PCR require all of the following except:

a.     extracted DNA template

b.     2 specific primers

c.      reation buffer

d.     RNA polymerase

40.                 bacteriophage is :

a.     virus that can be killed by antibiotic

b.     virus that act like a bacteria

c.      bacteria that act like a virus

d.     virus that infect bacteria

41.                 all of the following viruses are transmitted by blood except:

a.     HIV

b.     HBV

c.      HCV

d.     herps virus

42.                 all of the following are RNA viruses except:

a.     corona viridase

b.     reoviridase

c.      picorona viridase

d.     pox viridase

43.                 penetration of naked virus is by :

a.     fusion

b.     endocytosis

c.      translocation

d.     all of the above

44.                 amniotic cavity inoculation is one type of virus culture in:

a.     tissue wall

b.     lab animals

c.      embryonated egg

d.     non of the above

45.                 …………….. is an invitro method amplification of a short sequence of target DNA

a.     PCR

b.     hyberdization

c.      finger printing

d.     all of the above

46.                 nucleic acid hyberdization means:

a.       probe anneling or binding with it’s complementary segment of NA

b.     b- fragmentation of nucleic acid

c.      c- amplification of nucleic acid

d.     d- non of the above

47.                 DNA hyberdization is performed by:

a.     primers

b.     DNA labeled probe

c.      restriction endonuclease

d.     non of the above

48.                 PCR starts with :

a.     annealing

b.     denaturation of DNA

c.      c-extension of primers

d.     d- non of the above

49.                 ……………….. is a piece of DNA fragment of a particular gene that can bind specially with it’s complementary piece of DNA:

a.     codon

b.     probe

c.      LCR

d.     code

50.                 how many primers are used in PCR :

a.     non

b.     one

c.      two

d.     three

يُتبع  Continued