Consider a typical food chain. Which level would be at the greatest risk of suffering from exposure to
a toxin based on the concept of biological magnification? What will be an ideal response?
In biological magnification, the concentration of toxin increases with each level up the food chain. As
a result, the bottom of the food chain (the producers) have the lowest level of toxin, and each level up
has more. As a result, the top carnivore would be the level most likely to suffer from toxin exposure
where biological magnification is involved.
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Explain why radiation affects cancerous cells to a greater degree than noncancerous cells
What will be an ideal response?
Dinoflagellates
a. may produce red tides that poison and kill fish. b. produce a poison that builds up in the tissues of shellfish and may kill humans who eat infected shellfish. c. may undergo a population explosion that turns the ocean red or various colors. d. commonly are photosynthetic marine plankton. e. are all of these.
During an hydrolysis reaction, ____
a. covalent bonds are formed b. a water molecule is formed c. bonds are broken d. polymers are formed e. condensation occurs
The condition in which it takes larger or more frequent doses to produces the same effect is drug ____
a. tolerance b. addiction c. habituation d. concealment e. depression