Which movement of substances through a cell membrane against a concentration gradient requires energy?
question 16 options:

osmosis

diffusion

active transport

facilitated diffusion

active transport as it's difinition state

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics