The type of protein found in gap junctions is the
A) integrin.
B) occludin.
C) cadherin.
D) connexin.
E) claudin.
D) connexin.
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What labeled structure in the figure is the ligamentum arteriosum?
a) A b) B c) C d) D
The enzyme carbonic anhydrase is found:
a. in red blood cells b. in white blood cells c. in epithelial cells lining blood vessels d. as a free protein in blood plasma
A drug that blocks the action of the hormone cholecystokinin would not affect the
A) sensation of hunger. B) release of pancreatic secretions into the duodenum. C) delivery of bile. D) ability to absorb carbohydrates. E) ability to digest a fatty meal.
What is the correct relationship between chemical reactions and temperature?
A) All chemical reactions are endothermic, and therefore require warmer temperatures. B) Warmer temperatures provide the activation energy required to start chemical reactions. C) Warmer temperatures allow more energy to be released during a chemical reaction. D) Chemical reactions are not dependent on temperature at all.