Multiple Choice
The vertebrate kidney helps to keep the acidity of the body fluids constant by varying the amount of hydrogen ions (H+) it secretes into the urine. This aspect of kidney function, like other mechanisms of homeostasis, is most likely controlled by ________.
A) a negative feedback mechanism
B) nerve impulses from the brain
C) a hormone produced in the brain
D) a hormone produced in the kidney itself
Correct Answer:

Verified
Correct Answer:
Verified
Q29: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7803/.jpg" alt=" -The graph shown
Q30: The fact that every organism continuously exchanges
Q31: The basic unit of nervous tissue is
Q32: Homeostasis is _.<br>A)the maintenance of an unchanging
Q33: Which type of connective tissue is the
Q35: <b>Scenario</b><br>To study the effect of ambient (environmental)temperature
Q36: The figure below shows that _. <img
Q37: <b>Scenario</b><br>To study the effect of ambient (environmental)temperature
Q38: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7803/.jpg" alt=" -How did the
Q39: Heat exchange with the environment will be