What Are The Two Major Types Of Active Transport -

Think of this as the "Direct Deposit" method. In primary active transport, the source of energy is direct.

A car using the momentum of a downhill roller coaster to pull a second car uphill. what are the two major types of active transport

No direct ATP use. Energy from an ion gradient → One molecule goes down, one goes up. Think of this as the "Direct Deposit" method

Cells need to move things from Low concentration → High concentration. This is like rolling a boulder uphill; it requires energy! it requires energy!