If the concentration of thyroid hormone is high, ____
a. the secretion of thyroid releasing hormone is inhibited
b. the secretion of thyroid stimulating hormone is increased
c. calcitonin production is increased
d. resting metabolism decreases
e. more than one of these occurs
ANSWER: a
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Which genetic condition is revealed in the karyotype display shown in the accompanying figure?
a. Turner syndrome b. Down syndrome c. cri-du-chat d. Triple-X syndrome e. Klinefelter syndrome
The age-structure diagram for rapidly growing populations ____
a. is in the form of a rectangle b. is characterized by a large percentage of the population in the post-reproductive years c. has a very narrow base, showing a small number of young d. has about equal distribution among all age groups e. is in the form of a pyramid with a very broad base indicating a large number of young
Mammal-like reptiles arose during the:a
Carboniferous period. b. Cambrian period. c. Eocene epoch. d. Jurassic period. e. Cretaceous period
Transplanted tissue is rejected by the body if the
A. immune system interprets the tissue to be nonself B. grafted tissue is an autograft C. donor and recipient of the transplant are identical twins D. blood types of donor and recipient are the same E. serum sickness is uncontrolled