moorecedesha moorecedesha
  • 11-10-2019
  • Biology
contestada

why does active transport require energy to move molecules of a substance across a cell membrane?

Respuesta :

hassanen7122 hassanen7122
  • 11-10-2019

Answer:

Active transport requires energy because it is not a passive process. The molecule has to go against the concentration gradient. Hence it requires energy to be carried by the carrier proteins.

The energy is used is ATP, which comes from respiration  

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