When the ovaries secrete estrogen in response to the hormone GnRH, this is an example of __________ stimulation.
A. humoral
B. neural
C. hormonal
D. negative feedback
Answer: C. hormonal
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Ammonia is
A. a waste product of fatty acid metabolism. B. exhaled by the lungs into the air. C. processed by the liver to form urea, a less toxic compound. D. a waste product of fatty acid metabolism and is excreted by the kidneys into urine. E. a polypeptide containing many amino acids.
A reduction division is one in which
A. the chemical reactions of oxidation and reduction take place. B. the daughter cells receive only half as many chromosomes as the parent cell had. C. one daughter cell is substantially reduced in size compared to the parent cell. D. the size of chromosomes is reduced from double-stranded to single-stranded.
Aging of the brain begins
A) at age 30. B) before birth. C) at birth. D) after age 50.
myxedema commonly occurs in
What will be an ideal response?