A person who has a constant need to eat may show impaired secretion of or response to
A. leptin.
B. glucagon.
C. thyroid hormone.
D. thyroid-stimulating hormone.
E. growth hormone.
Answer: A
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It is believed that the coelacanths and lungfish represent a crucial link between other fishes and tetrapods. What is the major feature in these fish in support of this hypothesis?
A) Like amphibians, they are tied to the water for reproduction. B) Their fins have skeletal and muscular structures similar to amphibian limbs. C) They have highly evolved nervous and circulatory systems. D) They have lungs and are able to breathe air when water is scarce. E) They enter a hibernative stage when food is scarce, as many tetrapods do.
Which of the following is a cure for people with recurrent infection from Clostridium difficile?
A) Renal transplantation B) Genetic restructuring C) Grafting D) Fecal transplantation
The ____ digestive structures in humans secrete amylase
a. liver and gallbladder b. liver and pancreas c. pancreas and gallbladder d. pancreas and salivary glands e. pancreas, liver, and salivary glands
Which of the following would represent the strand of DNA from which the mRNA strand CUCAAGUGCUUC was made?
A.) CUCAAGUGCUUC B.) GAGUUCACGAAG C.) GAGTTCACGAAG D.) AGACCTGTAGGA