Table of Contents
What is bioaccumulation quizlet?
bioaccumulation definition. an increase in the concentration of a chemical in a biological organism over time, compared to the chemical’s concentration in the environment. Uptake. describes the entrance of a chemical into an organism.
What is an example of bioaccumulation quizlet?
Bioaccumulation is the accumulation of substances, such as pesticides, or other chemicals in an organism. Bioaccumulation occurs when an organism absorbs a substance at a rate faster than that at which the substance can be excreted by the body. In this case the cats could not withstand the DDT.
How does bioaccumulation occur quizlet?
Bioaccumulation occurs within a trophic level, and is the increase in concentration of a substance in certain tissues of organisms’ bodies due to absorption from food and the environment. Thus, bioconcentration and bioaccumulation occur within an organism, and biomagnification occurs across trophic (food chain) levels.
What causes bioaccumulation?
Bioaccumulation is the build-up of chemicals inside of living organisms. The two causes of bioaccumulation are the amount of the chemical coming into the living organism faster than the organism can use it and the living organism not being able to break down or excrete the chemical.
What is biomagnification and why is it important quizlet?
What is biomagnification? the concentration of toxins in an organism as a result of its ingesting other plants or animals in which the toxins are more widely disbursed. Biomagnification increases the concentration of toxic substances in organisms at higher trophic levels.
What is the best definition of bioaccumulation?
Bioaccumulation is defined as the net accumulation of a contaminant in or on an organism from all sources including water, air, and diet (Newman and Unger, 2003).
What is bioaccumulation and examples?
Bioaccumulation is the gradual build up over time of a chemical in a living organism. Pesticides are an example of a contaminant that bioaccumulates in organisms. Rain can wash freshly sprayed pesticides into creeks, where they will eventually make their way to rivers, estuaries, and the ocean.
What are the main effects of bioaccumulation?
1) Bioaccumulation in organisms may enhance the persistence of industrial chemicals in the ecosystem as a whole, since they can be fixed in the tissues of organisms. 2) Stored chemicals are not exposed to direct physical, chemical, or biochemical degradation.