A classmate across the room yawns, and then several other students begin to yawn. This is an example of
a. informational influence
b. psychological reactance
c. group cohesion
d. Social contagion
Answer: d. Social contagion
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Which regulatory mechanism is activated when the overall energy availability of a cell is high?
A. Citrate inhibits phosphofructokinase 1. B. ADP up-regulates phosphofructokinase 1. C. ATP inhibits phosphofructokinase 1. D. AMP up-regulates phosphofructokinase 1.
What function does the presence of alkaline components in pancreatic juice serve?
a. They create an optimum environment for digestion in the small intestine. b. They neutralize the acidity of stomach. c. They stimulate peristalsis in the small intestine. d. They create an optimum environment for digestion in the stomach. e. They stimulate peristalsis in the stomach.
Agarose is considered a polysaccharide because:
a. It is comprised of amino acid subunits. b. It is comprised of two simple sugars. c. It is comprised of many simple sugars. d. None of the above.
Blood pH is kept near a value of 7.3-7.5 because of
a. salts. b. buffers. c. acids. d. bases. e. water.