Test
Microb C1V1
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Preguntas del test (40)
1Nucleocapsid symmetry of viruses can be:
- Ahelical
- Bicosahedral
- Ccomplex
- DA, B and C are correct
- Eonly A and B are correct
2Nucleocapsid symmetry of viruses can be:
- Ahelical
- Bicosahedral
- Ccomplex
- Dbinocular
- Eonly A, B and C are correct
3Next viruses have DNA genome (choose 2, 3 or 4):
- AHepadnaviruses
- BAdenoviruses
- COrthomyxoviruses
- DPoxviruses
- ERetroviruses
4Next viruses have DNA genome:
Mark: A = 1,2,3 correct | B = 1 and 3 | C = 2 and 4 | D = only 4 | E = 1,2,3,4 all correct- A1. herpesviruses
- B2. retroviruses
- C3. adenoviruses
- D4. rhabdoviruses
5Next viruses have RNA genome, except one:
- Apicornaviruses
- Bcoronaviruses
- Cpoxviruses
- Dorthomyxoviruses
- Eparamyxoviruses
6The following are RNA viruses, EXCEPT:
- AInfluenza virus
- BAdenovirus
- CRabies virus
- DHepatitis A virus
- EEnteroviruses
7The viral genome:
- Ait is formed from DNA or ARN
- Bviruses are energetic parasites so they do not need viral genome
- Ccontain information necessary for division
- Ddoes not have any function in virus replication
- Edoes not contain the genetic information necessary for replication
8The viral genome:
- AIt consists of DNA or RNA
- BIt is composed of RNA and DNA
- CIt holds the genetic information necessary for replication
- DIt is involved in virus replication
- EAll RNA viruses have segmented genome
9Viruses contain the following structural elements, EXCEPT:
- ACapsid
- BGenome
- CNucleocapsid
- DRibosomes
- ECapsomeres
10The stages of viral replication are the following, EXCEPT:
- APenetration (adsorption)
- BUncoating
- CEarly protein biosynthesis
- DLate protein biosynthesis
- EFormation of division septum
11Steps of viruses replication are next:
Mark: A = 1,2,3 correct | B = 1 and 3 | C = 2 and 4 | D = only 4 | E = 1,2,3,4 all correct- Aattachment to specific host cells receptors
- Bpenetration and uncoating
- Cgenome replication
- Dassembly and release
12Regarding viruses replication we can state (choose all true):
- Aall RNA viruses replicate in the host cell cytoplasm, except influenza virus
- Ball DNA viruses replicate in the host cell nucleus, except poxviruses
- Call DNA viruses replicate in the host cell nucleus, except picornaviruses
- Dthe first step of viruses replication is penetration
- Eenveloped viruses are eliminated from host cell by budding
13Viruses:
- Athey are the most resistant microorganisms in the presence of decontamination agents
- Btheir genome contains DNA or ARN
- Cthey are particular prokaryotic cells
- D(Var 1) all replicate in the host cell nucleus / (other version) too small to be seen with the electron microscope
- E(Var 1) all replicate in the host cell cytoplasm / (other version) replicated in the cytoplasmic membrane
14Viruses are:
- Aeukaryotic unicellular microorganisms
- Bfacultative intracellular microorganisms
- Ccontain the viral genome, viral capsid and external membrane
- Dcan be observed in optical and electronic microscope
- Ethey are genetic parasites of animal cells, plants, fungi, protozoa or bacteria
15Regarding viruses, next statements are true, except one:
- Athe viral envelope contain lipoprotein
- Bviruses can replicate in non-living media as enrichment culture media
- Cviruses need live cells to grow
- Dviruses have no ribosome
- Econtain either RNA or DNA
16Influenza viruses present the following characteristics, EXCEPT:
- Abelong to the genus Orthomyxovirus
- Bthey are dsDNA viruses
- Cthey are enveloped viruses
- Dhelical nucleocapsid
- Eit has on the surface two glycoproteins: H (haemagglutinin) and N (neuraminidase)
17Influenza viruses have next properties, with one exception:
- Abelong to Orthomyxoviridae family
- Bthey have RNA segmented genome
- Cthey are non-enveloped viruses
- Dthey have a helical symmetry
- E2 surface glycoproteins are seen on the surface (haemagglutinine and neuraminidase)
18Enteroviruses are characterized by the following, EXCEPT:
- AThey are RNA viruses with genome of positive sense
- Benveloped
- CCan overcome gastric acid barrier
- Dthe route of entry is oral
- Ethey are effectively inactivated by milk pasteurization
19Rotaviruses have next properties, with one exception:
- Aare naked viruses
- Bthey contain a segmented, double-stranded RNA genome
- Cwe can identify rotaviruses antigen using latex agglutination test
- Dsubgroup and serotype are determined indirectly by RT-PCR
- Esubgroup and serotype are determined by ELISA
20Human rotaviruses:
- Aare a major cause of infantile diarrhea
- Bare nude RNA viruses with double capsid
- CELISA test rapidly and sensitively detects the virus directly in stool
- DAll of the above
- ENone of the above
21The next groups of viruses belong to Picornaviridae family, with one exception:
- APolio viruses
- BReovirusis
- CCoxsackie viruses
- DECHO viruses
- ENew enteroviruses (68-71)
22Laboratory diagnosis of paralytic polio can be done by next methods with one exception:
- Acultivation on embryonated eggs
- Bserology (IgM antibodies in CSF)
- Ccultivation on culture cells
- Didentification of isolated strain by neutralization test
- ERT-PCR for genome identification
23Adenoviruses are:
- ADNA enveloped viruses
- BDNA naked viruses
- C32 serotypes were described
- Dmajor serotypes (40, 41) are the cause of respiratory diseases
- Eminor serotypes (3, 4, 7) are the cause of diarrhoea in adults
24Influenza diagnosis can be done by:
Mark: A = 1,2,3 correct | B = 1 and 3 | C = 2 and 4 | D = only 4 | E = 1,2,3,4 all correct- A1. isolation on culture cells (kidney cells, chicks)
- B2. isolation on embryonated eggs (yolk cavity)
- C3. isolation on embryonated eggs (amniotic and allantoic cavities)
- D4. isolation on mice
25Serologic assay to reveal Abs presence for HIV infection are next:
Mark: A = 1,2,3 correct | B = 1 and 3 | C = 2 and 4 | D = only 4 | E = 1,2,3,4 all correct- A1. screening test by rapid test
- B2. screening test by ELISA (2 reactive sera)
- C3. confirmation test (WB or IF)
- D4. RT-PCR
26The next are microorganism obligate intracellular, except one:
- Achlamydia
- Bchlamydophila
- Cmycoplasmas
- Dphages
- Erickettsia
27The next are microorganism obligate intracellular, except one:
- Aviruses
- Bchlamydia
- Crickettsia
- Dyeasts
- Ebacteriophages
28The chlamydiae exist in nature in two forms, related with their replicative cycle:
Mark: A = 1,2,3 correct | B = 1 and 3 | C = 2 and 4 | D = only 4 | E = 1,2,3,4 all correct- Arectangular body
- Belementary body
- Cmorula
- Dreticulate body
29Chlamydia are:
Mark: A = 1,2,3 correct | B = 1 and 3 | C = 2 and 4 | D = only 4 | E = 1,2,3,4 all correct- A1. facultative intracellular bacteria
- B2. obligatory intracellular bacteria
- C3. can grow in special selective culture media
- D4. their replicative cycle supposes reticulate and elementary bodies
30Which of the following protozoa have flagella as locomotor organs?
Mark: A = 1,2,3 correct | B = 1 and 3 | C = 2 and 4 | D = only 4 | E = 1,2,3,4 all correct- A1. Giardia intestinalis
- B2. Entamoeba histolytica
- C3. Trichomonas vaginalis
- D4. Entamoeba coli
31Which of the following parasites have pseudopodia as locomotor organs?
- AGiardia intestinalis
- BBalantidium coli
- CCryptosporidium
- DEntamoeba histolytica
- EToxoplasma gondii
32Protozoans present their own locomotor (motility) organs, such as:
- Apseudopode
- Bflagella
- Ccili
- Dpilli
- Eonly A, B and C are correct
33Regarding protozoa we can state next, except one:
- Aunicellular eukaryotic microorganisms, bigger, like animal cells
- Bthey have an active life form called trophozoite
- Cthey have a resistance form, with latent life, called cystosom
- Dmost are motile by various structures: cilia, flagella, pseudopodia
- Eall the protozoa are reproducing by asexual or sexual division
34Regarding Entamoeba histolytica we can state (choose all true):
- Abelong to Rizopode
- Bpresent trophozoite and cyst
- Ctrophozoite has 2 forms: forma elongata and recurved
- Dthe locomotor organelles are called pseudopodia
- Eis the etiological agent of amoebiasis
35In the Cestoda Class parasites, the first host in the evolutionary cycle, is represented by:
- Apork
- Bmollusk
- Cbeef
- Ddog
- Efish
36Which of the following parasites are part of the Tremadoda (Trematoda) Class?
- ATaenia saginata
- BTaenia solium
- CFasciola hepatica
- DGiardia intestinalis
- EBalantidium coli
37Arthropodes:
Mark: A = 1,2,3 correct | B = 1 and 3 | C = 2 and 4 | D = only 4 | E = 1,2,3,4 all correct- A1. may act as vectors
- B2. have articulated legs
- C3. have symmetrical and chitinous body
- D4. have 2 suction cups
38Regarding the acid fast bacteria we can be affirmed:
- Acontains a small amount of peptidoglycan
- Bcontains arabinogalactan and micolic acids
- Ccan be stained in red in Ziehl Neelsen stain
- Donly A and B correct
- EA, B and C are correct
39The acid fast bacteria cell wall contains:
- Ateichoic acids
- Bmicolic acids
- Clipoglycan
- Dteichuronic acids
- Elipoteichoic acids
40Regarding the a.f.b can be affirmed:
- Acontains high quantity of peptidoglycan
- Bcan be stained in red in Gram stain
- Ccan not be stained in Ziehl Neelsen stain
- Dthey are sensitive at antiseptics and disinfectants
- Econtains arabinogalactan and micolic acids with long chain of C
Información
- Descripción
- multiple choice Microb Test sobre Microb C1V1, creado por Lincon Braves el 25/10/2026.
- Autor
- Lincon Braves
- Idioma
- English
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