ap bio br 1/14
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AP BIO BR 1/14
• Question: Plants and animals both need to guard against other organisms invading their “bodies” and causing disease or even death. Organisms, such as plants and animals, are “born” with certain innate defenses already in place to help protect them against invasion. In no more than three sentences, choose TWO innate defenses for animals, such as humans, and ONE innate defense for plants and describe how it works as a defense to invasion or harm.
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AP Biology
Immune SystemsPart 2
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Clonal Selection
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Humoral Immunity
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Antibodies attaching to the antigen
Antigen-bindingsites
Epitopes(antigenicdeterminants)Antibody A
Antibody BAntibody C
Antigen
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MHCs
Antigen-presentingcell
Antigenfragment
Class II MHCmolecule
T cellreceptor
Helper T cell
Antigenfragment
Class I MHCmolecule
T cellreceptor
Cytotoxic T cell
Infected cell Microbe
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Cell MediatedHumoral (Antibody)
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