Quiz
Pathogenesis
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Perguntas do quiz (19)
1Cholera toxin is secreted by a mechanism that mimics what process
- AType I pilus formation
- BFlagellar synthesis
- CConjugation
- DType IV pilus formation
2Which secretion system has a needle complex for injection of bacterial toxins into the host cell?
- AType I
- BType II
- CType III
- DType IV
3How does Salmonella interact with the host immune system?
- ASalmonella employs host immune cells to kill competing microbiota organisms
- BSalmonella kills host immune cells with ROSs
- CSalmonella enters host immune cells, causing host cell lysis
- DSalmonella prevents recruitment of host immune cells to the infection site
4Which species injects a receptor for the adhesin intimin into the host cell?
- ABordetella pertussis
- BSalmonella typhimurium
- CBacillus anthracis
- DVibrio cholerae
- EEscherichia coli
5How does Shigella enter the host cell?
- AIt binds and invade the cell by secreting proteases to digest the host cell membrane
- BIt secretes factors that cause host cell apoptosis
- CIt secretes factors that cause the host cell membrane to be smooth and thin, enabling invasion
- DIt injects proteins that change the host cell cytoskeleton, causing engulfment of the bacteria
6Bacteremia: [blank_start]bacteria in blood[blank_end]
- Abacteria in blood
7[blank_start]Bacteremia[blank_end]: bacteria in blood
[blank_start]Toxemia[blank_end]: bacterial products in blood
[blank_start]Septicemia[blank_end]: both bacteria and products in blood- ABacteremia
- BToxemia
- CSepticemia
8[blank_start]Acute[blank_end] rhinovirus
[blank_start]Chronic[blank_end] Hepatitus virus
[blank_start]Latent[blank_end] Varicella virus- AAcute
- BChronic
- CLatent
9[blank_start]Primary pathogens[blank_end] Able to cause disease alone in healthy hosts
[blank_start]Opportunistic infections[blank_end] Able to cause disease if host has reduced immunity- APrimary pathogens
- BOpportunistic infections
10How does pathogenesis occur?
[blank_start]3.[blank_end] Exotoxins subvert host cells
[blank_start]2.[blank_end] Colonization
[blank_start]4.[blank_end] Survival within the host after entry
[blank_start]1.[blank_end] Adherence- A3.
- B2.
- C4.
- D1.
11Adherence
Type I: [blank_start]SecA-dependent[blank_end]
Type IV: [blank_start]SecA- independent[blank_end]- ASecA-dependent
- BSecA- independent
12[blank_start]Adhesin[blank_end]: microbial factor that promotes [blank_start]attachment[blank_end]
- AAdhesin
- Battachment
13Match the category of exotoxin to the correct example.
[blank_start]Plasma membrane disruption[blank_end] Staphylococcus aureus alpha toxin
[blank_start]Cytoskeleton alterations[blank_end] Vibrio cholerae RTX toxin
[blank_start]Protein synthesis disruption[blank_end] Diphtheria toxin
[blank_start]Cell cycle disruption[blank_end] E. coli cytolethal distending toxin
[blank_start]Signal transduction disruption[blank_end] Cholera toxin
[blank_start]Cell-cell adherence[blank_end] Staphylococcus aureus exfoliative toxin
[blank_start]Vesicle traffic[blank_end] Helicobacter pylori VacA toxin
[blank_start]Exocytosis[blank_end] Tetanus toxin
[blank_start]Superantigens[blank_end] Staphylococcus auerus and Streptococcus pyogenes pyrogenic toxins- APlasma membrane disruption
- BCytoskeleton alterations
- CProtein synthesis disruption
- DCell cycle disruption
- ESignal transduction disruption
- FCell-cell adherence
- GVesicle traffic
- HExocytosis
- ISuperantigens
14Which secretion system uses a conjugation-like machinery to secrete protein from cytoplasm or periplasm?
- AType I
- BType II
- CType III
- DType IV
15Which secretion system uses molecular syringe to inject proteins from bacterial cytoplasm into host cytoplasm?
- AType I
- BType II
- CType III
- DType IV
16What type of secretion system uses pilus-like extraction/retraction mechanism to push proteins out of the cell
- AType I
- BType II
- CType III
- DType IV
17A(n) [blank_start]opportunistic[blank_end] pathogen causes disease only when conditions are favorable for the microorganism because of transfer to an inappropriate body site or weakened immunity in an individual.
- Aopportunistic
18Cilia, fimbriae, and pili are all examples of structures used by microbes for [blank_start]adhesion[blank_end].
- Aadhesion
19You have recently identified a new toxin. It is produced by a gram-negative bacterium. It is composed mostly of protein, has high toxicity, and is not heat stable. You also discover that it targets liver cells. Based on these characteristics, how would you classify this toxin?
- ASuperantigen
- BEndotoxin
- CExotoxin
- DLeukocidin
Informações
- Descrição
- O usuário eliminou as informações de disciplina Quiz sobre Pathogenesis, criado por Usuário eliminado em 12-11-2018.
- Autor
- Usuário eliminado
- Idioma
- English
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