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Innate Immunity Quiz

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Which of the following best describes the function of the complement system?

Directly destroying pathogens by lysing their cell membranes

Preventing the activation of phagocytes

Inhibiting the release of cytokines and chemokines

Opsonizing pathogens and inducing an inflammatory response (correct)

What triggers the activation of the complement system?

Inhibition by plasma proteins

Local activation at sites of infection (correct)

Interaction with antibodies

Systemic distribution throughout the body

How is the complement system activated?

Through interaction with cytokines

By inhibiting phagocytosis

By direct binding to pathogens

Through a triggered-enzyme cascade (correct)

What is the role of activated complement proteins in the immune response?

Opsonizing pathogens and recruiting more phagocytes (B) Signup and view all the answers

Which protein mediates the ingestion of complement-tagged pathogens by phagocytes?

CR1 (B) Signup and view all the answers

What is the main function of chemokines?

Induce directed chemotaxis in nearby responsive cells (B) Signup and view all the answers

Which cells are mainly guided by chemokines in the adaptive immune response?

Lymphocytes (C) Signup and view all the answers

What is the role of terminal complement proteins in killing certain pathogens?

Forming pores in membranes (C) Signup and view all the answers

Which type of cytokines induce responses through binding specific receptors on target cells?

TNF family cytokines (D) Signup and view all the answers

What is the function of small fragments of complement?

Stimulate increased blood flow (C) Signup and view all the answers

Which proteins are lacking on pathogen surfaces, allowing C3 to work?

DAF and CD55 (A) Signup and view all the answers

What is the main role of complement activation?

Creating pores in bacterial membranes (A) Signup and view all the answers

Innate Immunity Quiz

Choose a study mode

Podcast

Questions and Answers

Which of the following best describes the function of the complement system?

What triggers the activation of the complement system?

How is the complement system activated?

What is the role of activated complement proteins in the immune response?

Which protein mediates the ingestion of complement-tagged pathogens by phagocytes?

What is the main function of chemokines?

Which cells are mainly guided by chemokines in the adaptive immune response?

What is the role of terminal complement proteins in killing certain pathogens?

Which type of cytokines induce responses through binding specific receptors on target cells?

What is the function of small fragments of complement?

Which proteins are lacking on pathogen surfaces, allowing C3 to work?

What is the main role of complement activation?

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