Exploring Innate Immunity Concepts

Which of the following is NOT a component of the innate immune system?

• Skin

• Antibodies

• Phagocytes

• Toll-like receptors

What is the primary function of phagocytes in the innate immune system?

• To produce antibodies

• To engulf and digest pathogens

• To activate T-cells

• To produce histamines

Which of the following is a key step in the mechanism of phagocytosis?

• Antigen presentation to T cells

• Pathogen recognition

• Release of lysozyme

• Antibody production

Cells that can give rise to all types of blood cells are called_____

• Hematopoietic cells

• Keratinocytes

• Erythrocytes

• Leukocytes

Tags

NGSS.HS-LS1-4

Which of the following is a function of the complement system?

• To produce antibodies

• To lyse pathogens

• To activate T-cells

• To decrease inflammation

Which of the following is considered a physical barrier to infection?

• Lymphatic vessels

• Antibodies

• Mucous membranes

• Phagocytes

Which cells are the "first responders" to an infection?

• Erythrocytes

• T-cells

• Neutrophils

• Macrophages

What enzyme must be formed for the complement cascade to function?

• Antigen-antibody complexes

• C3 convertase

• Membrane attack complex

• lysozyme

Which of the following is a chemical barrier to infection?

• Skin

• Stomach acid

• Hair

• Saliva

Which cell type is a granulocyte?

• Lymphocyte

• Leukocyte

• Basophil

• Macrophage