A human kidney filters about 200 liters of blood each day. Approximately two liters of liquid and nutrient waste are excreted as urine. The remaining fluid and dissolved substances are reabsorbed and continue to circulate throughout the body. Antidiuretic hormone (ADH) is secreted in response to reduced plasma volume. ADH targets the collecting ducts in the kidney, stimulating the insertion of aquaporins into their plasma membranes and an increased reabsorption of water. If ADH secretion is inhibited, which of the following would initially result?
(A) The number of aquaporins would increase in response to the inhibition of ADH.
(B) The person would decrease oral water intake to compensate for the inhibition of ADH.
(C) Blood filtration would increase to compensate for the lack of aquaporins.
(D) The person would produce greater amounts of dilute urine.
Answer: (D) The person would produce greater amounts of dilute urine.
You might also like to view...
Some green algae exhibit alternation of generations. All land plants exhibit alternation of generations
No charophytes (stoneworts) exhibit alternation of generations. Keeping in mind the recent evidence from molecular systematics, the correct interpretation of these observations is that _____. A) charophytes are not related to either green algae or land plants B) plants evolved alternation of generations independently of charophytes C) alternation of generations cannot be beneficial to charophytes D) land plants evolved directly from the green algae that perform alternation of generations E) scientists have no evidence to indicate whether or not land plants evolved from any kind of alga
How does x-ray crystallography provide details about molecular structure?
a. Only DNA molecules scatter x-rays; therefore, this helped to prove that DNA was the genetic material in cells. b. X-rays are reflected by some atoms and absorbed by others; thereby giving clues to molecule structure. c. X-rays are scattered by atoms in a specific pattern, from which molecular size, shape, and spacing of repeating elements can be calculated. d. This technique captures photographs of magnified molecules. e. X-rays can be used to isolate DNA molecules from living organisms.
Regardless of the temperature of the environment they find themselves in, endotherms maintain a nearly consistent ________
Fill in the blank(s) with correct word
The wavelength of light used plus the numerical aperture governs
A. size of the field. B. magnification. C. resolution. D. illumination. E. All of these choices are correct.