In all organisms, substances are transported in and out of cells. What is required for the process of active transport but not for the process of passive transport?

Question

In all organisms, substances are transported in and out of cells. What is required for the process of active transport but not for the process of passive transport?
Responses

Concentration gradient
Concentration gradient

Carrier proteins
Carrier proteins

Energy
Energy

Ions
Ions

GPT-4o mini · Answer

The correct answer is **Energy**. Active transport requires energy to move substances against their concentration gradient, while passive transport occurs along the concentration gradient without the use of energy.