Which statements best describe the difference between active transport and passive transport?
Responses
A
Active transport occurs in all cells.
Passive transport requires ATP.
Active transport occurs in all cells. Passive transport requires ATP.
B
Active transport requires ATP.
Passive transport does not require ATP.
Active transport requires ATP. Passive transport does not require ATP.
C
Active transport moves substances along the concentration gradient.
Passive transport moves substances against the concentration gradient.
Active transport moves substances along the concentration gradient. Passive transport moves substances against the concentration gradient.
D
Active transport occurs only in cells that require large amounts of energy.
Passive transport occurs in all cells.