The vertebrate kidney helps to keep the acidity of body fluids constant by varying the amount of hydrogen ions (H+) it secretes into the urine. You can confidently predict that this aspect of kidney function will be controlled by
A. a positive feedback mechanism.
B. a negative feedback mechanism.
C. nerve impulses from the brain.
D. a hormone produced in the kidney itself.
Answer:B
The vertebrate kidney helps to keep the acidity of body fluids constant by varying the amount of hydrogen ions (H+) it secretes into the urine. You can confidently predict that this aspect of kidney function will be controlled by
A. a positive feedback mechanism. B. a negative feedback mechanism. C. nerve impulses from the brain. D. a hormone produced in the kidney itself.