SAT Subject Biology Practice Question 324: Answer and Explanation

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Question: 324

14. A volunteer was injected intravenously with several test substances to determine the effect of each substance on normal body variables. The results are shown in Table 1. Assume that enough time was allowed between injections so that the substances do not interfere with one another.

Table 1

Based on the information in Table 1, which of the following is most likely substance B?

A. Calcitonin
B. Insulin
C. Parathyroid hormone
D. Glucagon
E. Aldosterone

Correct Answer: C


C From Table 1, substance B caused an increase in serum calcium levels, which is the effect that parathyroid hormone has on the body.

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