A sustained decrease in circulating Ca2+ levels might be caused by decreased levels of which of the following substances?
A.
A. Growth hormone
B.
B. Parathyroid hormone
C.
C. Thyroid hormone
D.
D. Calcitonin
Exam No：AP Biology Problem Set 4 Year：2024 Question No：AP Biology2024AP0304
Answer:
B
Knowledge points:
3.4 Cellular Energy
Solution:
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