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Innate Defense - - lecture

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Questions and Answers

What is the main characteristic of nonspecific defense mechanisms?

They have memory
They are specific to certain pathogens
They are innate and do not have memory (correct)
They are acquired over time

Which of the following is not a component of nonspecific resistance?

Physical barriers
Phagocytic cells
Antibodies (correct)
Fever

What is the function of phagocytic cells?

Attack and remove dangerous microorganisms (correct)
Monitor normal tissues
Block viral replication in cells
Increase body metabolism

What is the function of natural killer cells?

Monitor normal tissues (B) Signup and view all the answers

What are interferons?

Anti-viral proteins that block viral replication in cell (B) Signup and view all the answers

What is the complement system?

Plasma proteins that attack plasma membrane of pathogens (C) Signup and view all the answers

How does fever help in nonspecific resistance?

All of the above (D) Signup and view all the answers

Which of the following is not a type of nonspecific resistance?

Antibodies (A) Signup and view all the answers

What is the function of natural killer cells in immunological surveillance?

Monitor normal tissues (B) Signup and view all the answers

What is the function of interferons in nonspecific resistance?

Block viral replication in cells (C) Signup and view all the answers

Which of the following is not a physical barrier of nonspecific resistance?

Phagocytic cells (D) Signup and view all the answers

What is the function of the complement system in nonspecific resistance?

Attack the plasma membrane of pathogens (D) Signup and view all the answers

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