We enjoy sunbathing because it stimulates keratinocytes to release
A. keratin.
B. collagen.
C. beta endorphin.
D. carotene.
Answer: C
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When absorbing the force of a baseball, which of the following will change the impulse?
A. reduce the force with which the ball is thrown B. wear a catcher's mitt C. "give" with the ball when catching D. both A and B E. all of the above
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "A"?
A. Outer boundary of cell, controls entry and exit of substances B. Site of protein synthesis C. Major site of ATP synthesis when oxygen is available D. Contains digestive enzymes E. Directs cellular activities, contains DNA
The heart is called a "double pump" because there are two functionally separate circulations. Trace the pathway of each of these circulations and include the following information: heart chambers involved, major blood vessels involved, and general areas through which the blood flows. Begin with the right atrium.
What will be an ideal response?
the individual suffering from diabetes insipidus may urinate
What will be an ideal response?