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Innate Immunity

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Questions and Answers

Which of the following is not a type of barrier protection against pathogens?

Cellular: Phagocytes

Physical: Epithelial cells

Chemical: antibodies, histamines, cytokines (correct)

Mechanical: cilia, fluids, smooth muscle contractions

Which enzyme is mentioned as a factor contributing to antimicrobial defense?

Peroxidase

Catalase

Lysozyme (correct)

Phosphorylase

What do lactoferrin and calprotectin do in the context of antimicrobial defense?

Bind metal ions needed by microbes to propagate (correct)

Neutralize toxins produced by pathogens

Inhibit viral replication

Promote phagocytosis of bacteria

Which of the following is not mentioned as a component of physical barrier protection against pathogens?

Smooth muscle contractions Signup and view all the answers

What is the role of psoriasin in the context of antimicrobial defense?

Acts as an antibacterial agent to prevent colonization Signup and view all the answers

Which enzyme is involved in killing or inhibiting microbial growth on skin surfaces?

Lysozyme Signup and view all the answers

Which protein binds metal ions needed by microbes to propagate?

Lactoferrin Signup and view all the answers

Which of these is an antibacterial agent that prevents colonization?

Psoriasin Signup and view all the answers

Which component is not mentioned as a type of barrier protection against pathogens?

Antibodies Signup and view all the answers

Which of the following is not a mechanical barrier protection against pathogens?

Antimicrobial peptides Signup and view all the answers