MCQs Flashcards

(13 cards)

1
Q

Which cells are required for an adaptive immune response?

A

Lymphocytes

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2
Q

MHC Class I presents peptides of what length to CD8T cells?

A

8-10 aa

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3
Q

Which pathogens do T helper 2 (Th2) cells primarily provide cell-mediated immunity against?

A

Helminths and extracellular parasites

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4
Q

Where are peptides for MHC class I presentation generated?

A

Proteasomes

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5
Q

How does the IglC protein contribute to virulence of Francisella tularensis?

A

it is required to induce apoptosis of infected macrophages

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6
Q

Which property is associated with Francisella tularensis?

A

It inhibits the macrophage respiratory burst

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7
Q

Which component of the Burkholderia pseudomallei bacterial cell protects the organism from complement activation?

A

Capsular polysaccharide

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8
Q

Which virulence factor of Helicobacter pylori disrupts the gastric mucin layer?

A

urease

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9
Q

What makes lysozyme antimicrobial?

A

Targets the cell wall peptidoglycan

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10
Q

How can virus-antibody complexes contribute to disease development?

A

By enhancing viral uptake into cells via Fc receptors

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11
Q

Why is the M2e region of the M2 protein a target for new influenza vaccine approaches?

A

It has remained highly conserved since 1918

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12
Q

What is the role of protein kinase R (PKR) in the antiviral state?

A

PKR phosphorylates eIF2a to inhibit protein synthesis

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13
Q

Which PAMP does Toll-like receptor 7 (TLR-7) recognise?

A

Single-stranded RNA

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