Where is blood flow slowest?
a. arteries
b. arterioles
c. capillaries
d. venules
e. veins
c
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With regard to understanding the evolution of cooperation, the principal prediction that can be made from the expression Br > C is that _____
A) natural selection will favor cooperation among close relatives B) cooperation evolves because it benefits all members of a species C) cooperation evolves because it enhances the species' fitness D) selection favors self-sacrifice in reproduction E) natural selection will favor cooperation among any individuals
Which of the following is likely NOT to be a mechanism for controlling hormone levels in the blood?
A. Alter the rate of synthesis and subsequent release of hormone into the blood. B. Change the rate at which an enzyme produces the hormone. C. Modify the structure of the hormone at its point of production so it no longer binds its receptor. D. Alter the rate at which the hormone is removed from the blood. E. Change the rate at which the hormone is excreted into the urine.
Why is active transport important in cell functions?
What will be an ideal response?
Which pair of values best fills in the blanks in this statement: On average, eukaryotic cells are __________ times longer and have _________ times more volume than prokaryotic cells
(a) 5, 100 (b) 10, 200 (c) 10, 100 (d) 10, 1000