Question

innate immunity activation depends on: diversity of antibodies in the blood stream. none of the other answer options is correct. memory b cells. previous exposure to a foreign antigen. major histocompatibility complex (mhc) class ii proteins.

Answer 1

Innate immunity is specific; adaptive immunity is not. Innate immunity involves humoral immunity; adaptive immunity does not.

Innate immunity is triggered by antigens; adaptive immunity is not. Innate immunity involves lymphocytes; adaptive immunity does not.Innate immunity is the first line of defense against infection and is mediated by several mechanisms including physical barriers, chemical mediators, and cells of the immune system.

The physical barriers include the skin, mucous membranes, and cilia.Innate immunity is the body’s first line of defense against foreign invaders such as viruses and bacteria. Adaptive immunity is the body’s second line of defense against infection and is activated when the first line of defense is overwhelmed.

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