BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How does our immune system gain acquired immunity?
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T-cells always attack viruses
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Antibodies are made to recognize antigens on pathogens
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Antigens are made to recognize antibodies on pathogens
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Our body remembers the pathogens
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Explanation:
Detailed explanation-1: -In antibody responses, B cells are activated to secrete antibodies, which are proteins called immunoglobulins. The antibodies circulate in the bloodstream and permeate the other body fluids, where they bind specifically to the foreign antigen that stimulated their production (Figure 24-2).
Detailed explanation-2: -The surfaces of microorganisms typically bear repeating patterns of molecular structure. The innate immune system recognizes such pathogens by means of receptors that bind features of these regular patterns; these receptors are sometimes known as pattern-recognition molecules.
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