Non-specific immunity 1

What is the first line of defense in innate immunity?

• Natural Killer cells

• Mucous membranes

• Phagocytes

• Fever

• Complement system

Which of the following is a chemical barrier in the body's defense system?

• Skin

• Cilia

• Sebum

• Mucus

• Normal microbiota

Which of the following cells is involved in the initial phagocytosis of pathogens?

• T cells

• Neutrophils

• B cells

• Eosinophils

• Lymphocytes

Which enzyme found in tears helps break down bacterial cell walls?

• Amylase

• Lysozyme

• Mucus

• Sebum

• Interferon

Which of the following is an example of an antimicrobial substance produced by the body?

• Lysozyme

• Hemoglobin

• Albumin

• Insulin

• Collagen

Which of the following cells play a key role in inflammation?

• T cells

• B cells

• Neutrophils

• Macrophages

• Eosinophils

What is the process of phagocytosis?

• Formation of antibodies

• Destruction of foreign pathogens

• Secretion of cytokines

• Presentation of antigens

• Activation of T cells

What do natural killer cells target?

• Bacteria

• Healthy cells

• Viruses

• Cancer cells

• Fungi

Which protein is part of the complement system that assists in the lysis of pathogens?

• C3b

• Lysozyme

• IgA

• Mucus

• Albumin

What is the primary role of macrophages in the immune response?

• Producing antibodies

• Producing cytokines

• Presenting antigens

• Engulfing pathogens

• Activating T cells