extra info Flashcards

1
Q

CGAS/STING

A

Cgas activates cytokines, DNA is in the cytosol and binds cGASm creates cDNTP, diffuses onto sting, turn on cytokine, bacterial homolog makes c-di-GMP

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2
Q

baltime group:

A

DNA virus(dsDNA, ssDNA(+)), RNA viruses(dsRNA, ssRNA(+), ssRNA(-)) retrovirus(+ssRNA, dsDNA)

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3
Q

What do all viruses contain?

A

a capsid and a genome

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4
Q

Studies of bacterial defense mechanisms against bacteriophage infection have yielded important reagents that are used today to manipulate DNA and RNA sequences in the laboratory. Which of the following exemplify these advancements (select all that apply)?

A

restriction endonuclease
crisp-cas9

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5
Q

When foreign DNA enters into a bacterial cell, the DNA must be associated with which of the following to be vertically transmitted to the progeny of the cell?

A

an origin of replication
a plasmid
the recipient cells chromosome

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6
Q

Opsonization is a process whereby innate and adaptive immunity work together to…

A

phagocytosis an invader

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7
Q

PRR

A

Proteins a person is born with that detect microbial invaders

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8
Q

Microbial associated molecular patterns (MAMPs)

A

conserved microbe associated protein that trigger cytokine production

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9
Q

TLR

A

membrane embedded proteins that detect foreign microbes

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10
Q

NLR

A

cytosolic proteins that detect foreign microbes

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11
Q

An immune deficiency causes a severe reduction in the amount of MHC-II expressed on the surface of professional antigen presenting cells. Which immune processes will be least impacted by this deficiency?

A

Cytotoxic T-celll activation

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12
Q

Which of the following statements about MHC class II molecules is true?

A

present on extracellular antigens

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13
Q

Leukocidin of staph

A

cell membrane disrupter that impacts immune cells

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14
Q

Yrsinia pestis injects effectors expressing_______ to disrupt phagocytosis, which will prevent the development of

A

f-met, humoral immunity

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15
Q

Influenza pandemics have resulted from: (more than one answer may be correct)

A

major mutational changes, reassortment, bird virus infection of a human, efficient person-person

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16
Q

What do effectors do in yrsenia pestis?

A

block cytokine production and disrupt actin polymerization

17
Q

immune evasion of yrsenia pestis

A

LPS is a MAMP that induces inflammation through PRR TLR 4, lipid A core is conserved among gram negative organisms

18
Q

MHC-1

A

intracellular antigen, nucleated cells present

19
Q

MHC-2

A

extracellular antigens, found on dendrites, macrophages and B-cells

20
Q

What is forced uptake?

A

use of t3 secretion system to induce uptake

21
Q

What is M cell trasncytosis?

A

antigen/bacteria taken up my M cell, exit m-cell for macrophage uptake