Trace amounts of dioxin were present in agent orange, a defoliant sprayed on vegetation during the vietnam war. animal tests suggest that dioxin can cause birth defects, cancer, liver and thymus damage, and immune system suppression, sometimes leading to death. but the animal tests are equivocal; a hamster is not affected by a dose that can kill a guinea pig. dioxin acts like a steroid hormone, entering a cell and binding to a cytoplasmic receptor that then binds the cell’s dna. how might this mechanism explain the variety of dioxin’s effects on different body systems and in different animals? how might you determine whether a type of illness is related to dioxin exposure? how might you determine whether a particular individual became ill as a result of exposure to dioxin? which would be more difficult to demonstrate? why?
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Biology, 21.06.2019 18:30
Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide → hydrazine + water b. nitrogen + water → hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide → nitrogen + water d. water + hydrogen peroxide → nitrogen + hydrazine
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Biology, 21.06.2019 19:40
Astudent drew the following flowchart to show the movement of nutrients. soil → roots → plants →? where does nitrogen go next? a. directly into nearby animals as nutrition b. directly into aquifers through condensation c. directly into the air through evaporation d. directly into nearby plants during fixation
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Biology, 22.06.2019 01:30
Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!
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Biology, 22.06.2019 04:00
What best explains the inability for life to exist in earth early atmosphere
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Trace amounts of dioxin were present in agent orange, a defoliant sprayed on vegetation during the v...
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