Your physician has requested a test that involves radioactive iodine. This material will be injected and monitored to watch for normal rates of uptake. Test results reveal that the rate of uptake is abnormal. Which hormone would you predict to be outside of a homeostatic range?
A. Cortisol
B. Growth hormone
C. Atrial natriuretic peptide
D. Thyroid hormone
E. Insulin
Answer: D
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Why do moderate levels of disturbance result in an increase in community diversity?
A) Habitats are opened up for less competitive species. B) Competitively dominant species infrequently exclude less competitive species after a moderate disturbance. C) The environmental conditions become optimal. D) The resulting uniform habitat supports stability, which in turn supports diversity. E) Less-competitive species evolve strategies to compete with dominant species.
Coliforms can be present in 5% of drinking water samples tested within a month and still be considered safe according to the U.S. Environmental Protection Agency (EPA)
Indicate whether the statement is true or false.
Deficiency in which of the following can result in scurvy, which causes bleeding, hair and tooth loss, joint pain, and swelling?
a. vitamin D b. vitamin E c. vitamin C d. vitamin A
Barr bodies are found only in normal males. Indicate whether the statement is true or false