As filtrate moves down the loop of Henle, the surrounding interstitial fluid becomes _____ concentrated than the filtrate, so _____ leaves the filtrate.
Fill in the blank(s) with the appropriate word(s).
Answer:
a. more
b. water
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In the 16th century, a Spanish ship explored a Pacific Island that had a small mountain range separating it. Mice that
were on the ship escaped onto the island on both sides of the mountain range. After decades of separation the two populations developed different numbers of chromosomes, resulting in reproductive isolation that prevented any future interbreeding. This speciation event is an example of ____.
a. allopatric speciation b. sympatric speciation c. the founder effect d. inbreeding e. gene flow
Which of the following cube-shaped objects would have the highest surface-area-to-volume ratio? A cell with a volume of
A. 10 cm3. B. 8 cm3. C. 3 cm3. D. 1 cm3.
The figure below shows the relationship between beak depth in the medium ground finch on Daphne Major and relative fitness. Assuming that beak depth is heritable, what do you predict about beak depth in the next generation?
A. Mean beak depth will stay about the same. B. Mean beak depth in the next generation cannot be predicted using this data. C. Mean beak depth will increase. D. Mean beak depth will decrease.
Which of the following is NOT a target of drugs that inhibit protein synthesis?
A) the shape of the 30S ribosomal subunit B) interference with alanine-alanine bridges C) the enzymatic site of the 50S ribosomal subunit D) movement of the ribosome from one codon to the next E) the tRNA docking site