Match the transport process to its description.
1. the movement of molecules from an area of high concentration to an area of low concentration
2. the movement of molecules via proteins embedded in the cell membrane; requires ATP
3. the movement of molecules against the concentration gradient
4. tends to create an equilibrium state
A. active transport
B. passive transport
1. B. passive transport
2. A. active transport
3. A. active transport
4. B. passive transport
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An amine group that is removed from an amino acid within a hepatocyte is then
A. used to form a peptide bond between a protein and a lipid. B. used to generate bile salts and excreted in the feces. C. converted to urea and eliminated as part of urine. D. sent to a mitochondria to enter the citric acid cycle.
Which fibers generate the smallest value for conduction velocity?
A) B fibers B) D fibers C) C fibers D) A fibers
The most effective stimulus for excitation of the right horizontal semicircular canal hair cells is:
A. constant velocity rotation to the right B. constant velocity rotation to the left C. rotatory acceleration of the head to the right D. rotatory acceleration of the head to the left E. the same stimulus as that for the left horizontal canal hair cells
Heart rate is increased by the release of epinephrine by the adrenal medulla into the bloodstream. This is an example of
A. endocrine control B. exocrine control C. paracrine control D. direct neural control E. positive feedback