The X chromosome in humans is
a. found as a pair in females.
b. the only human sex chromosome.
c. present only in females.
d. always found in single copy.
a. found as a pair in females.
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. If growers want fruit to drop from trees simultaneously they might apply:
A. auxins B. ethylene C. abscisic acid D. gibberellins E. brassinosteroids
Predict what would happen to the volume of the urine if the descending portion of the loop of Henle ceased to function.
A. The volume of the urine would not change. B. The volume of the urine would increase. C. The volume of the urine would decrease. D. The salt concentration of the urine would remain constant.
The antidiuretic hormone
a. promotes processes that lead to an increase in the volume of urine. b. promotes processes that lead to a decrease in the volume of urine. c. acts on the proximal tubules of nephrons in the kidney. d. is produced by the adrenal cortex. e. fits all of these descriptions.
Arteries have ________ compliance and ________ resistance to flow.
A) low : low B) high : high C) low : high D) high : low E) zero : high