Blood flow slows in capillaries due to their ________.
A. valves
B. small diameters
C. large collective cross-sectional area
D. small collective cross-sectional area
E. short lengths
Answer: C
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A. DNase B. reductase C. oxygenase D. RNase E. RNA polymerase
What is the total number of possible outcomes that two gametes, both of which are heterozygous for both of their alleles, can produce?
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What term describes regulation of the trp operon that can occur even in trpR? mutants, thus suggesting that the mechanism is repressor-independent?
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Which of the following is NOT a characteristic of amphibians?
A. They have lungs. B. They have a cartilaginous skeleton. C. They are ectothermic. D. They have a three-chambered heart. E. They have vertebrae.