Question

What are the 3 levels of immunity?

Answer 1

The three levels of immunity are innate immune response, adaptive immune response, and antibodies. The innate immune response provides immediate, non-specific protection, while the adaptive immune response targets specific pathogens. Antibodies are proteins that neutralize foreign substances.

Step-by-step explanation:

The three levels of immunity are innate immune response, adaptive immune response, and antibodies. The innate immune response is the first line of defense and includes physical and chemical barriers that provide immediate, non-specific protection against pathogens. The adaptive immune response is a specific defense mechanism that develops over time and involves the recognition and targeting of specific pathogens by immune cells called lymphocytes. Antibodies, also known as immunoglobulins, are proteins produced by immune cells that specifically recognize and neutralize foreign substances.

Answer 2

The three levels of immunity are:

Innate immunity

This is a general protection that everyone is born with. It's also known as non-specific immunity and is the body's first line of defense against pathogens.

Adaptive immunity

This immunity develops throughout our lives. It's also known as specific immunity and is developed after exposure to a specific pathogen.

Passive immunity

This immunity is "borrowed" from another source and lasts for a short time.

The immune system has three lines of defense:

Outer barriers: These include the skin.

Non-specific immune cells: These include macrophages and dendritic cells.

Specific immune system: This is made of lymphocytes like B- and T-cells.