Pancreatic secretion of bicarbonate is stimulated by ________.
A. cholecystokinin
B. glucagon
C. secretin
D. gastric inhibitory peptide
E. gastrin
Answer: C
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One can inject dyes of different sizes into a liver cell and determine those molecules that can readily pass through gap junctions. What sized molecules can pass through gap junctions?
A. <1,000 Daltons B. >1,000 Daltons, but <1,500 Daltons C. >10,000 Daltons D. >5,000 Daltons, but <10,000 Daltons E. >1,500 Daltons, but <5,000 Daltons
Suppose a living plant cell has ?P???0.4 MPa and ?S = ?0.5 MPa. If the plant cell is placed into a
beaker filled with a solution with ? = ?S????0.9 MPa, then the cell should
a. take up water until it bursts. b. lose water until its ? = ? of the solution. c. take up water until within the cell ?P = ??S. d. take up water until its ?S = ?S of the solution. e. lose water until its ?S = its ?P.
The natural philosophy of Aristotle and his colleagues was
a. mechanistic. b. vitalistic. c. a belief in absolute truth. d. a and c.
Homo neanderthalensis were about the same height as Homo sapiens, but they:
a. were more robust and muscular. b. were slighter and weaker. c. had skeletal features more adapted to life in trees. d. had much smaller heads. e. Both a) and c) are correct