Which of the following is the most direct result of the presence of acid chyme in the smalle intestine?
A. the liver produces insulin
B. The pancreas produces hydrolytic enzymes
C. the stomach produces pepsin
D. The intestinal lining produces the hormone secretin
E. The gall bladder releases bile
Ans: D. The intestinal lining produces the hormone secretin
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Which of the following organs serves as a transition between the pharynx and the trachea?
a. nasal cavity b. bronchi c. larynx d. alveoli
Which was first on the planet, prokaryotes or eukaryotes?
A. Eukaryotes B. Prokaryotes C. They both appear in the fossil record at about the same time. D. Researchers do not know which group came first
The leukocytes that are central to adaptive immunity are the
a. lymphocytes. b. macrophages. c. neutrophils. d. mast cells. e. eosinophils.
When affected males produce all affected daughters and no affected sons, the pattern of inheritance is likely to be
____________________. Fill in the blank(s) with the appropriate word(s).