The cells of a fish are about 0.8% salt. one liter of water is about 1,000 grams. solution a contains 70 grams of salt in 20 liters of water, solution b contains 120 grams of salt in 10 liters of water, and solution c contains 50 grams of salt in 10 liters of water. which solution ishyperosmotic to the fish?
a. solution b only
b. both solution b and solution c
c. solution a only
d. both solution a and solution b
Answers: 1
Biology, 21.06.2019 19:10
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Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.
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The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i.e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).
Answers: 1
The cells of a fish are about 0.8% salt. one liter of water is about 1,000 grams. solution a contain...
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