Quiz: Exams — AUA MCQ

1- Conjugative plasmids characterized by:

A a) Sex pilus formation B b) Small in size C c) Absence of F factor D d) Common in gram positive cocci

2- Bacterial ribosomes formed of:

A a)70s with 50s and 30s subunits B b)70s with 60s and 40s subunits C c) 80s with 50s and 40s subunits D d)80s with 60s and 30s subunits

3- The organisms which can grow best in the presence of a low concentration of oxygen

A a)Microaerophilic B b)Aerophilic C c) Anaerobic D d)Aerobic

4- DNA transfer from one bacterium to another through phages is termed as

A a. Transduction B b. Translation C c. Transfection D d. Transformation

5- Viral genome formed of:

A a- DNA or RNA B b- DNA only C c- RNA only D d- DNA and RNA

6- Carriers are more serious than cases due to:

A a. They move freely among populations B b. They do not show manifestation of disease C c. They carry the organism in the inter-epidemic period D d. All of the above

7- Atypical virus like agents include:

A a. Defective viruses B b. Prions C c. Pseudovirions D d. All of the above

8- Types of cloning vectors are

A a. Plasmid B b. Cosmid C c. Bacteriophage D d. All of the above

9- Non genetic origin of drug resistance may be due to:

A a- Metabolic inactivity B b- Loss of target structure C c- Intrinsic natural resistance D d- All of the above

10-Bacterial properties carried on plasmid includes:

A a)Fertility factor plasmids (F- factor) B b)Drug resistance factor (R-factor) C c) Virulence factor D d)All of the above

11-Which of the following is resistant to penicillin:

A a)Mycoplasma B b)L-form C c) Both of the above D d)None of the above

12-Rifampicin inhibit RNA synthesis by

A a)Blocking DNA gyrase enzyme B b)Compete with PABA C c) Binding to RNA polymerase enzyme D d)All of the above

13- All bacterial of medical importance are:

A a)Saprophytes B b)Autotrophs C c) Heterotrophs D d)All of the above

14-Inhibition of peptidoglycan synthesis is the mechanism of action of:

A a. Chloramphenicol B b. Tetracycline C c. Penicillin D d. Nystatin

15-All RNA Viruses which infect human are single stranded except:

A a. Corona virus B b. Influenza virus C c. Rota virus D d. Mumps

16-Teichoic acid forms a major surface component of:

A a. Gram negative bacteria B b. Gram positive bacteria C c. Both of the above D d. None of the above

17-All DNA virus which infect human are double stranded except:

A a. Papilloma virus B b. Parvovirus B 19 C c. Polyomavirus D d. Poxvirus

18- mantadine and Rimantadine which used for treatment of seasonal influenza act by:

A a)Inhibiting virus attachment B b)Inhibiting virus Uncoating C c) Inhibiting Protease enzyme D d)Inhibiting Reverse transcriptase enzymes.

19- Which of the following antiviral drugs act by inhibiting protease enzyme:

A a. Acyclovir B b. Ritonavir C c. Ganciclovir D d. Zidovudine

20-Virus symmetry was detected by:

A a. Viral capsid proteins B b. Viral matrix proteins C c. Viral envelope D d. Viral genome

21-The infective stage of Toxoplasma gondii do not include:

A a. Pseudocyst B b. Tissue cyst C c. Sporulated oocyst D d. Unsporulated oocyst

22-Actively feed and multiply stage of parasite is called:

A a. Cyst B b. Trophozoite C c. Egg D d. Oocyst

23-Balantidium coli infection occur through:

A a. Ingestion of egg B b. Ingestion of cyst C c. Ingestion of trophozoite D d. Ingestion of meat of pig

24-The most dangerous type of malaria is:

A a. Plasmodium vivax B b. Plasmodium ovale C c. Plasmodium falciparum D d. Plasmodium malariac

25-Characters of Protozoa do not include:

A a. Unicellular organism B b. Multicellur organism C c. Living organism D d. Can move by pseudopodia

26-Anopheles mosquitoes can transmit the following:

A a)Human malaria B b)Epidemic typhus C c) Leishmaniasis D d)Plaque

27-Culex mosquitoes can transmit the following:

A a. Wuchereria bancrofti B b. Pediculosis C c. Epidemic relapsing fever D d. Leishmaniasis

a. Malaria

A a. Malaria B b. Leishmania C c. Trypanosoma D d. Balantidium coli

29-Plague is transmitted by:

A a. Fleas B b. Mosquitoes C c. Lice D d. Bugs

30-The mode of infection in giardiasis is:

A a. Ingestion of cyst B b. Ingestion of fish C c. Penetration of skin by larva D d. Penetration of skin by cercaria

31-Infection by Ascaris Lumbricoides is through Ingestion of:

A a. Uncooked fish B b. Uncooked beef C c. Uncooked pork D d. Embryonated egg

32-Infective stage of Ancylostoma duodenale is:

A a- Egg B b- Filariform larva C c- Egg containing miracidium D d- Cystecercoid larva

33-The general characters of trematodes do not include:

A a)Leaf like B b)Hermaphrodites except schistosomes C c) Attached to their host by means of sukers D d)Segmented

34- Bile ducts are the habitat of:

A a)Schistosoma, B b)Fasciola. C c) Heterophyes D d)Ancylostoma duodenalc.

35- The mode of infection in heterophyiasis is through ingestion of infected insufficient cooked:

A a)Crab and cry fish B b)Boury and boulty fish C c) Salmon fish D d)Cow meat

36-The general characters of cestodes do not include:

A a)Flat B b)Segmented C c) Separate sexes D d)Tape like

37-The intermediate host of Teania solium is:

A a- Pig B b- Cow C c- Man D d- Cat

38-The general characters of nematodes do not include:

A a- Cylindrical B b- Not Segmented C c- Separate sexes D d- All females lying eggs

39- Diagnosis of taeniasis is through detection of:

A a- Egg in stool B b- Larva in stool C c- Cyst in stool D d- Adult in stool

40-The mode of infection of ancylostomiasis through:

A a- Ingestion of embryonated egg B b- Penetration of skin by filariform larva C c- Ingestion of cow meat D d- Ingestion of cyclops

1- Conjugative plasmids characterized by:

A a- Sex pilus formation B b- Small in size C c- absence of F factor D d- Common in gram positive Cocci

2- Bacterial ribosomes formed of:

A a- 70s with 50s and 30s subunits B b- 70s with 60s and 40s subunits C c- 80s with 50s and 40s subunits D d- 80s with 60s and 30s subunits

3- The organisms which can grow best in the presence of a low concentration of oxygen

A a- Microaerophilic B b- Aerophilic C c- Anaerobic D d- Aerobic

4- DNA transfer from one bacterium to another through phages is termed as

A a- Transduction B b- Translation C c- Transfection D d- Transformation

5- Viral genome formed of:

A a- DNA or RNA B b- DNA only C c- RNA only D d- DNA and RNA

6- Carriers are more serious than cases due to:

A a- They move freely among populations B b- They do not show manifestation of disease C c- They carry the organism in the inter-epidemic period D d- All of the above

7- Atypical virus like agents include:

A a- Defective viruses B b- Prions C c- Pseudovirions D d- All of the above

8- Types of cloning vectors are

A a- Plasmid B b- Cosmid C c- Bacteriophage D d- All of the above

9- Non genetic origin of drug resistance may be due to:

A a- Metabolic inactivity B b- Loss of target structure C c- Intrinsic natural resistance D d- All of the above

10- Bacterial properties carried on plasmid includes:

A a- Fertility factor plasmids (F- factor) B b- Drug resistance factor (R- factor) C c- Virulence factor D d- All of the above

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