Nutrient transport requires energy because the nutrients must be transported into the cell against a concentration gradient. The energy required for nutrient transport is supplied by
A. ATP.
B. the proton motive force.
C. phosphoenol pyruvate.
D. ATP, the proton motive force, or phosphoenol pyruvate.
Answer:A
Nutrient transport requires energy because the nutrients must be transported into the cell against a concentration gradient. The energy required for nutrient transport is supplied by
A. ATP. B. the proton motive force. C. phosphoenol pyruvate. D. ATP, the proton motive force, or phosphoenol pyruvate.