Answer:
Active transport requires energy as passive transport does not. Active transport requires ATP(energy) b/c it's going against the concentration gradient while passive transport goes with the concentration gradient. Active transport travels from low to high and passive transport travels from high to low.
Step-by-step explanation:
A trick my teacher told us to help with remembering active transport is by comparing it to a luggage and how when you pack an extremely full luggage it requires a lot of force to shut it b/c you're filling it up, comparing to active transport, it requires ATP and it goes form low to high so imagine the luggage going from empty(low) to full of clothes(high).