[ مختبرات ] : كل مايخص المختبرات مستوى رابع

[منارالحارثي]

بسم الله الرحمن الرحيم


السلام عليكم ورحمة الله وبركاته



نسدح هنا كل مايخص مواد مستوى رابع من اسئله وغيرها قبل النهائي



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ولكم مني جزيل الشكر

[منارالحارثي]

1. Bacteria without cell Wall

a. Chlamydia

b. Rickettsia

c. Mycoplasma

d. Spirochetes

2. Obligatory Aerobic Bacteria

a. Grow in presence of oxygen traces and 5 – 10% CO2

b. Grow in either presence or absence of oxygen.

c. Grow only in presence of oxygen

d. Grow only in absence of oxygen

3. Brucella Melitensis is

a. Obligatory aerobic bacteria

b. Obligatory anaerobic bacteria

c. Facultative anaerobic bacteria

d. Micro-aerophilic bacteria

4. Function of cell membrane

a. Giving the shape to bacteria

b. Carrying somatinc antigen

c. Excretion of hydrolytic exo-enzymes and toxins

d. Protect the bacteria from plasmolysis

5. Pseudomonas aeroginosa is

a. Peri-trichous bacteria

b. Lopho-trichous bacteria

c. Amphi-trichous bacteria

d. Monotrichous bacteria

6. Short rods, motile by single polar flagellum :

a. Lactobacillus

b. Spirochaeta

c. Vibrio

d. Streptococcus

7. Genetic information of bacteria is carried on

a. Messenger RNA

b. Transfer RN|A

c. Transcript RNA

d. Double – Stranded DNA

8. Thermophilic bacteria grow at

a. 60 – 80°C

b. 0 - 20°C

c. 37°C

d. 100 - 120°C

9. 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

10. Mycoplasma is

a. Neutrophilic bacteria

b. Acidophilic bacteria

c. Basophilic bacteria

d. All of the above

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

a. Lag phase

b. Decline phase

c. Logarithmic Phase

d. Stationary phase

12. Bacteria which do not cause hemolysis is

a. Beta-Hemolytic

b. Alpha-Hemolytic

c. Gama Hemolytic

d. None of the above

13. Normal flora of Lower intestine is all of the following except:

a. Staphylococci

b. Diphtheroids

c. Shigella

d. Lactobacillus

14. 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.

15. It is circulation of bacterial toxins in blood

a. Pyaemia

b. Toxemia

c. Bacteremia

d. Septicemia

16. Inhibit the growth of micro-organisms

a. Germicidal

b. Germistatic

c. Pathogenicity

d. Virulence

17. For disinfection of mattresses :

a. Hot air oven

b. Autoclave

c. Ethylene Oxide

d. Hydrogen Peroxide

18. For sterilization of serum :

a. Autoclave

b. Boiling

c. Steaming

d. Filtration

19. Obligatory Anaerobic bacteria:

a. Clostridium Tetani

b. Salmonella

c. M. Tuberculosis

d. E-coli

20. Pyschrophilic bacteria grow at:

a. 100°C

b. 60°C

c. 14°C

d. 37°C

21. Bacteria which contain chlorophyll

a. Heterotrophic bacteria

b. Autotrophic bacteria

c. Photosynthetic bacteria

d. All of the above

22. Selective media for fungi is:

a. Sabouraud’s dextrose agar

b. Lowenstein – Jensen Media

c. Loeffler’s media

d. Chocolate agar

23. Tricophyton is one of

a. Yeast

b. Moulds

c. Dermatophyte

d. Dimorphic Fungi.

24. Plastomyces is one of

a. Dermatophytes

b. Dimorphic Fungi

c. Yeast

d. Moulds

25. Mechanism of action of penicillin:

a. Inhibit protein synthesis

b. Inhibit Folic acid pathway

c. Inhibit peptidoglycan cross – linking

d. Block peptidoglycan synthesis

26. Antibiotics which inhibit DNA synthesis:

a. Rifampin

b. Quinolones

c. Sulfonamides

d. Tetracylines

27. Color of gram negative bacteria is

a. Violet

b. Green

c. Red

d. Black

28. Acid Fast Bacteria

a. Salmonella

b. Shigella

c. M. Tuberculosis

d. E – Coli

29. Vibrio Cholera is:

a. Neutrophilic Bacteria

b. Acidophilic Bacteria

c. Basophilic Bacteria

d. All of the above

30. Spherical or avoid cells occurring in chains

a. Staphylococci

b. Streptococci

c. Lactobacillus

d. Spiro chaeta

31. All are Prokaryotic cells except:

a. Fungi

b. Bacteria

c. Chlamydia

d. Mycoplasma

32. Viruses:

a. Contain only DNA or RNA

b. They Contain ribosome

c. Did not affected by antibiotics

d. a+c

33. All of these are essential structure except:

a. Nuclear body

b. Spores

c. Cell wall

d. Plasma Membrane

34. ______________ is giving the shape to the bacteria

a. Cytoplasmic Membrane

b. Capsule

c. Cell Wall

d. All of the above

35. One of its functions is selective permeability

a. Cell wall

b. Plasma membrane

c. Capsule

d. Spores

36. They are responsible for Haemagglutination Phenomenon

a. Flagella

b. Fimbria

c. Capsule

d. Cell wall

37. Clostridium Tetani is:

a. Atrichous bacteria

b. Mono-trichous bacteria

c. Amphi-trichous bacteria

d. Peri-trichous bacteria

38. Short curved or straight rods, motile by single polar flagellum

a. spirochaeta

b. Vibrio

c. Escherichia

d. Lactobacillus

39. Small gram negative cocci, occur in pairs

a. staphylococcus

b. streptococcus

c. neisseria

d. non of the above

40. Transfer of genetic information from one bacterium to another by bacteriophages is:

a. Transformation

b. Tansduction

c. Conjugation

d. Mutation

41. Toxoplasma gondii can be diagnosed by

(a) Sabin-Feldman

(b) Giemsa stain

(c) Widal test

(d) Stool culture

42. Leishmania is transmitted by

(a) Flea

(b) Mosquitoe

(c) Sand fly

(d) Snake bite

43. The following is true about chlamydia except

(a) Obligate intracelluar parasite

(b) Gram negative bacteria

(c) Bacteria without cell well

(d) They have both DNA and RNA

44. The bacteria that arranged in chain is called

(a) Staphylococcus

(b) Streptococcus

(c) Spiral

(d) Comma

45. The following is accessary structural of bacteria except

(a) Cytoplasmic membrane

(b) Capsule

(c) Flagella

(d) Spores

46. The main function of flagella are-------except

(a) Help in diagnosis of bacteria

(b) Essential for motility

(c) Protect bacteria from phagocytosis

(d) Carrying flagella antigen

47. Genetic information can be transfered by --------- except

(a) Isolation

(b) Transformation

(c) Transduction

(d) Conjugation

48. Bacteria that able to grow in temperature -20c is called

(a) mesophilic

(b) Acidophlic

(c) Psychrophilic

(d) Thermophilic

49 Bateria growth curve include ----------except

(a) Log phase

(b) Photosynthetic

(c) Stationary

(d) Death

50. Routine bacteria stain is include

(a) Methylene blue

(b) Gram stain

(c) Indian ink

(d) Leishman

51- Bacteria which contain chlorophyll

a. Heterotrophic bacteria

b. Autotrophic bacteria

c. Photosynthetic bacteria

d. All of the above

[منارالحارثي]

هذي واللي قبلها عن مادة البكتيريا

1- …………….. cause acute epiglottitis which may cause fatal airway obstruction.

a- Haemophilus influenza.

b- Strep. pneumonia.

c- Klebsiella pneumonia.

d- Chlamydia.

2- During Satellitism test ………….. grow on blood agar by the help of the growth of Staph.aureus.

a- Haemophilus influenzae.

b- Strep. pneumoniae.

c- Klebsiella pneumoniae.

d- Chlamydia.

3- Although Mycobacteria do NOT accept Gram stain they have …………… cell wall.

a- Gram positive.

b- Gram negative.

c- Gram variable.

4- Why Mycobacteria staining technique (ZN) requires heating as a dye mordent ?

a- Because their cell walls contain large amount of fat.

b- Because of their waxy surface.

c- Because they always have a thick capsule.

d- A and B.

5- Most strains of Mycobacteria need an incubation period of ……. to grow and form their significant characteristics.

a- Up to 3 weeks.

b- 4-8 weeks.

c- 2 days.

d- Overnight.

6- Which of the following cause diseases transmitted to human by an insect vector?

a- Mycoplasma.

b- Rickettsia..

c- Chlamydia.

d- All the above.

7- Rickettsia species cause …………………..

a- Typhus.

b- Scrub typhus.

c- Rocky mountain spotted fever.

d- All the above.

8- …………. are the smallest prokaryotes capable of extracellular self reproduction.

a- Mycoplasma.

b- Rickettsia..

c- Chlamydia.

d- All the above.

9- ……….. have a poorly gram negative staining cell membrane, but do not have a cell wall.

a- Mycoplasma.

b- Rickettsia..

c- Chlamydia.

d- All the above.

10- Large gram +ve non-motile rods, spore forming and capsulated are ……………………..

a- Haemophilus influenzae.

b- Yersinia pestis.

c- Clostridium tetani.

d- Bacillus anthracis.

11- Gram +ve rods appear in clusters like Chinese letters ……………………….

a- Strep. pneumoniae.

b- Campylobacter jejuni.

c- Corynebacterium diphtheriae.

d- Clostridium tetani.

12- C. diphtheriae grow rapidly on ……….. producing significant growth and characteristic morphological feature (granules formation).

a- Loffler serum medium.

b- Dorset egg medium.

c- Blood agar.

d- A & B.

13- Microbes that colonize the human body during birth or shortly thereafter, remaining throughout life are referred to as …………………..

a- Normal flora.

b- Pathogens.

c- Indigenous microbiota.

d- A & C.

14- Normal flora of the skin are concentrated in which of the following regions ……………………….

a- Moist areas.

b- Between the toes.

c- Groin.

d- All the above.

15- The highest number of normal flora is located in which site of the digestive system ?

a- Stomach.

b- Small intestine.

c- Bile duct.

d- Colon.

16- Which of the following part of the body remains sterile ( free from any microbe) ?

a- Mouth.

b- Nose.

c- Brain.

d- Urinary tract.

17- Gram positive bacterium can cause life threatening disease in hospital patients through forming biofilms along catheters and other invasive medical devices and enters bloodstream causing systemic infection is …..

a- Staphylococcus epidermidis.

b- Propionibacterium acnes.

c- Staphylococcus aureus.

d- Streptococcus mutans.

18- Gram positive bacterium, one of the nose normal flora, major cause of surgical wound infection and often referred to as MRSA …………………………

a- Staphylococcus aureus.

b- Streptococcus mutans.

c- Staphylococcus epidermidis.

d- Propionibacterium acnes.

19- Which of the following bacteria have the ability to grow on biofilms on the surface of teeth (plaque) and cause dental decay (caries) ?

a- Streptococcus mutans.

b- Propionibacterium acnes.

c- Staphylococcus epidermidis.

d- Helicobacter pylori.

20- Removal of Streptococcus mutans from oral microflora result in increased growth of ……………… and hence an increased risk of contracting pneumonia.

a- Staphylococcus aureus.

b- Helicobacter pylori.

c- Streptococcus pneumonia.

d- Staphylococcus epidermids.

21- The only organism that has been discovered living in the human stomach in a highly acidic environment (pH 1-2) is …………………………

a- Helicobacter pylori.

b- Campylobacter.

c- Lactobacillus.

d- Bacteroides.

22- Microbial growth in cultures is demonstrated by ……………….

a- Turbidity.

b- Gas formation.

c- Colonies formation.

d- All the above.

23- Identification of bacteria can be achieved through ……………..

a- Growth characteristics.

b- Colony appearance.

c- Microscopic morphological characters.

d- All of the above.

24- Buffered Glucose Peptone water à Fermentation of Glucose à …….… + Methyl red à Red color +ve result. ** Complete **

a- Acid.

b- Base.

c- Salt.

d- Citrate.

25- Which of the following bacteria is Gram positive rods obligatory anaerobic ?

a- Bacillus.

b- Niesseria.

c- Clostridia.

d- Mycobacteria.

26- Which of the following bacteria cause pyogenic meningitides ?

a- Staphylococcus aureus.

b- Streptococcus mutans.

c- Niesseria gonorrhoeae.

d- Niesseria meningitides.

27- Staphylococcus aureus grows on Mannitol salt agar forming yellow colonies due to …..

a- Salt degradation.

b- Agar liquefaction.

c- Mannitol fermentation.

d- CO2 production.

28- Which of the following bacteria are coagulase positive ?

a- Staph. aureus.

b- Staph. saprophiticus

c- Staph. epidermids

d- All the above.

29- Staph. aureus ……………..

a- Aerobic gram positive cocci arranged in clusters.

b- Grow on MacConkey agar producing pink colonies.

c- Grow on Mannitol salt agar producing yellow colonies.

d- All the above.

30- In case of alpha haemolysis on blood agar, colonies are surrounded by ………………

a- Greenish zone.

b- Colorless zone.

c- Yellowish zone.

d- Blue zone.

31- Bacteria which cause complete degradation of hemoglobin and produce colonies surrounded by clear zone on blood agar are referred to as ……………………

a- Alpha hemolytic bacteria.

b- Beta hemolytic bacteria.

c- Gamma hemolytic bacteria.

d- None of the above.

32- Pneumococci form part of the normal microbial flora of …………….. .

a- Moth.

b- Skin.

c- Colon.

d- Upper respiratory tract.

33- Strep. pneumoniae growth on Chocolate agar is enhanced when ………………….

a- Incubated in Carbon dioxide enriched atmosphere.

b- Incubated anaerobically.

c- Incubated at 42 C.

d- None of the above.

34- EaggEC [Enteroaggregative E.coli] causes ……………………….

a- Watery diarrhea.

b- Dysentery (similar to Shigellosis).

c- Chronic diarrhea mainly in children.

d- All the above.

35- E.coli grow on MacConkey agar producing ……………………

a- Yellow colonies.

b- Pink colonies.

c- Brown colonies.

d- Colorless colonies.

36- Best sample for diagnosing enteric fever during the 3rd week is (are) …………………

a- Blood.

b- Faeces.

c- Urine.

d- Sputum.

37- H2S producing Salmonella species grow on XLD agar forming ………………………

a- Pink-red colonies.

b- Pink-red colonies with black centers.

c- Black colonies.

d- Mercury drop colonies.

38- Which of the following bacterium is Gram –ve rods motile oxidase –ve and H2S +ve ?

a- Shigella.

b- Vibrio.

c- Pseudomonas.

d- Salmonella.

39- Widal test is a serological technique which tests for the presence of ………….. in a patient's serum.

a- Salmonella antibodies.

b- Salmonella surface antigens.

c- Salmonella exo-toxins.

d- Antibodies for Salmonella toxins.

40- Widal test is of a great diagnostic importance in case(s) of …………………….

a- Typhoid fever.

b- Paratyphoid fever.

c- Food poisoning.

d- A & B.

1- In oxidation-fermentation test fermentative bacteria utilize carbohydrate in ………….

a- The sealed tube only.

b- The open tube only.

c- Both open and sealed tubes.

d- Neither open nor sealed tube.

2- Urease enzyme catalyze the break down of urea to give ……. Which raise pH (Alkaline)

a- Acetic acid.

b- Ammonia.

c- Hydrogen peroxide.

d- Sodium hydroxide.

3- In urease test the organism is cultured in a medium which contains urea and the indicator …….

a- Phenol red.

b- Ferric chloride.

c- Bromothymol blue.

d- Neutral red.

4- The principle of Methyl red test is …………………..

a- The ability of Enterobacteria to ferment sucrose.

b- The ability of Enterobacteria to ferment glucose with production of acid.

c- The ability of Enterobacteria to ultiliza ammonia.

d- The ability of Enterobacteria to hydrolyze urea.

5- Catalase test is used to differentiate ………………..

a- N. gonorrhoeae from N. meningitides.

b- Staphylococcus from Streptococcus.

c- S. pneumonia from other streptococcus.

d- Salmonella from Shigella.

6- During catalase test we should avoid using media that contain ……… in order not to get false positive result.

a- Red blood cells.

b- Hydrogen peroxide.

c- Glucose.

d- Lactose.

7- ………….. àCatalaseà H2 + O2

a- H2O

b- H2O2

c- H3O2

d- OH

8- Coagulase test is used to confirm ……………………

a- Staphylococcus aureus.

b- Streptococcus pneumonia.

c- Staphylococcus epidermidis.

d- Staphylococcus saprophyticus.

9- C. diphtheriae characterized by ……………..

a- Formation of Voluntin granules.

b- Appear like Chinese letters under LM.

c- Infect young children forming psudomembrane at the throat.

d- All the above.

10- Which of the following bacteria are motile at (18-22 Co) BUT non-motile at (35-37 Co)?

a- Vibrio cholerae.

b- Pseudomonas aeruginosa.

c- Campylobacter jejuni.

Listeria monocytogenes

[منارالحارثي]

لاتنسوني من دعواتكم لي

[منارالحارثي]

الحين انزل مادة البرسايت

[منارالحارثي]

Parasitology quiz 4 الاجوبه موجوده بالاسفل
1.................................are hermaphorditic flukes:
a. Ascaris lumricoides.
b. Strongyloides stercolaris.
c. Trichuris trichiura.

d.Clonorchis sinensis.
2. The life cycle of Cryptosporidium involves:
a. Sexual stage only.
b. Sexual and asexual stages.
c. Binary fission.
d. None of the above.

3.S.haematopium is:
a. Blood flukes.
b. Intestinal flukes.
c. Liver flukes.
d. Lung flukes.

4. Hymenolepis. nana is known as :


a. Beef tapeworm.
b. Pork tapeworm.
c. Dwarf tapeworm.
d. Dog tapeworm.

5. .................................have a rosette-shaped uterus:
a. A.lumbricoides.
b. D.latum.
c. H.diminuta.
d. T. saginata.

6. Platyhelminths include:
e. Cestodes and flukes
f. Nematodes and cestodes.
g. Nematodes only
h. All of the above

7.One of the following parasite have complete alimentary canal:
i. D.latum.
j. H.nana.
k. T.solium.
l. S. mansoni.


8. Diagnosis of Echinococcus granulosis by:
a. Indirect hemaglutination.
b. ELIZA.
c. Latex agglutination.
d. All of the above.

9. …………………, its nutrients must be absorbed through the tegument:
a. Schistosoma mansoni.

b. Ascaris lumbricoides.
c. Hymenolepis nana.
d. All of the above.
.
10. Dipylidium caninum is the ............tapeworm.
a. Pig.
b. Beef.
c. Dog.
d.Rat.
11. Class insecta includes:
a. Fleas.
b. Flies.
c. Lice.
d. All of the above.
12. The intermediate host of H.nana are :
a. Insects
b. Crustaceans
c. A & B
d. Dogs.
13. Plerocercoid larva is the infective stage of :
a. H.nana.
b. T.saginata.
c. T. solium.
d. D.latum.
14. Tunga penetrans is a ………….flea:
a. human.
b. Dog.
c. Cat.
d. All of the above.
15. Eerie appearance of face is the characteristic of:
a. G.lamblia
b. T.vaginalis
c. Balantidium.coli
d. E.histolytica
16. G.lamblia lives in:
a.Colon
b.Stomach
c.The lower two thirds of the small intestine
d.The upper two thirds of the small intestine
17. Entamoeba.coli is :
a. Commensal parasite
b. Commensal bacteria
c. Pathogenic protozoa
d. Pathogenic bacteria
18. The infection with of T.vaginals occurs by:
a. Fecal-oral transmission.
b. Sexual intercourse.
c. Contaminated food and water.
d. a+b

19. cyst of E.histolytica is:
a. Ameboid
b. Rounded
c. Ovoid
d. Elongated
20. E. granulosis belongs to:
a. Protozoa.
b. Round worms.
c. Flukes.
d. Tapeworms.

[منارالحارثي]

الاجوبة مادة البراسايت


1-d
2-b
3-a
4-c
5-b
6-a
7 مااعرفه
8-d
9-ماعرفه
10-d
11-d
12-c
13-d
14-a
15-a
16-d
17-a
18-b
19-b
20-d

[منارالحارثي]

[منارالحارثي]

دعواتكم لي
وكل ماتحتجونه انا بالخدمه

[منارالحارثي]

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