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Primary Active Transport

View the animation below, then complete the quiz to test your knowledge of the concept.






1Active transport requires...
A)an enzyme on the surface of the cell.
B)a channel on the surface of the cell.
C)a carrier protein on the surface of the cell.
D)a pore on the surface of the cell.
E)a gate on the surface of the cell.



2Active transport moves a solute...
A)up its concentration gradient, that is, from a low concentration to a high one.
B)up its concentration gradient, that is, from a high concentration to a low one.
C)down its concentration gradient, that is, from a low concentration to a high one.
D)down its concentration gradient, that is, from a high concentration to a low one.
E)across its concentration gradient, that is, from a high concentration to a low one.



3Active transport requires...
A)energy in the form of ADP.
B)energy in the form of ATP.
C)energy in the form of glucose.
D)energy in the form of fructose.
E)little or no energy to function.



4Once the solute molecule is in the binding site, a phosphate disengages from the binding molecule and the solute is released.
A)True
B)False



5Active transport is able to move these substances without the expenditure of energy.
A)True
B)False







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