Explore key bacterial mechanisms through MCQs focused on exotoxins and defensive structures like capsules. This quiz assesses understanding of bacterial pathogenesis and resistance, critical for medical and microbiology students.
Streptococcus pneumonia
Haemophilus influenzae type b
Neisseria menigitidis
Corynebacterium diphtheria
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Pseudomembranous colitis
Gas gangrene
Bactericides and prevotella infections
Food-borne botulism
C. perfringens food poisoning
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Gram-negative, oxidase-positive, bacillus producing exotoxin A and exoenzyme S
Gram-positive, catalase-positive, coagulase-negative coccus producing delta-toxins
Gram-negative, oxiclase-negative, lactose-fermenting bacillus producing intimin
Gram-negative, branching bacillus growing anaerobically
Gram-positive, catalase-positive, coagulase-positive coccus producing alpha-toxins
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Trirneric protein embedded in the outer membrane
Short surface protein filaments
Surface-anchored polysaccharide
Crystalline layer of self-assembling surface proteins
Polymer of sugars cross-linked via peptides
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Intimin
Endotoxin
Exotoxin A
Shiga toxin
Alpha hemolysin
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Streptokinase
Erythrogenic toxin
Pneurnolysin
Panton-Valentine leukocidin (PVL)
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Degrades lipids in host cell membranes
Inhibits host cell protein synthesis
Forms pores in host cell membranes
Causes activation of large numbers of T cells
Triggers massive cytokine secretion and activation of complement and coagulation cascades
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A Type III secretion system
A cell wall-degrading enzyme
A Type V secretion system
A capsule-dependent system
A signal peptidase enzyme
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CD11b/CD8
EF-2
Iron
ADP
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