AP®︎ Environmental Science: Topic 8.8 Flashcards

Master key terms and definitions for Topic 8.8 of AP Environmental Science – Bioaccumulation and Biomagnification to help you prep for quizzes and the AP exam.

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Term

Bioaccumulation

Definition

Buildup of a substance within one organism over time because uptake exceeds metabolism and excretion

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Bioaccumulation
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Buildup of a substance within one organism over time because uptake exceeds metabolism and excretion

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Biomagnification
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Increase in a substance’s concentration per unit of tissue at successively higher trophic levels

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DDT (Dichlorodiphenyltrichloroethane)
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Persistent, fat-soluble synthetic insecticide that biomagnifies; its metabolite DDE causes eggshell thinning and reduced hatching success in birds

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Mercury
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Persistent pollutant that aquatic microorganisms can convert into bioaccumulating methylmercury

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Methylmercury
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Biologically available form of mercury that binds strongly to tissues, biomagnifies in aquatic food webs, and damages nervous-system development

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PCBs (Polychlorinated Biphenyls)
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Persistent, fat-soluble synthetic industrial compounds that biomagnify and can cause reproductive, developmental, and immune effects

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Minamata Disease
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Severe neurological illness caused by eating seafood contaminated with industrial methylmercury that biomagnified in Minamata Bay, Japan

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