Types Of Active Transport //top\\ | What Are The

But then, a more complex problem arrived. A large, sad sucrose molecule named Suzy stood at the gate. She was too big for the Uniporter. Worse, she was trying to enter against her concentration gradient. ATP couldn’t carry her alone.

One day, a frantic glucose molecule named Gus arrived at the gate. Gus was vital for the city’s energy, but outside, there were very few of him, while inside Cytoville, there were already thousands. The laws of diffusion said he should never get in. Yet, the city was starving. what are the types of active transport

“I need help,” ATP admitted.

The most famous example, he added, was the . Every moment, ATP pumped three sodium ions out of the cell and two potassium ions in, both against their will, keeping the city electrically charged and ready for action. “Direct energy, direct result,” ATP nodded. But then, a more complex problem arrived

“Nat!” ATP called out. “I have a deal for you. You’re going to flow inside anyway. But if you do it through this special door, you can drag Suzy along with you.” Worse, she was trying to enter against her

ATP burned one of his own phosphate groups, releasing a burst of energy. Click, whirr. The Uniporter spun, and Gus was whisked inside, moving against his natural gradient. This, ATP explained to a passing mitochondrion, was the first type of active transport: .

Just then, a sodium ion named Nat rushed by, moving down his concentration gradient—from high concentration outside to low concentration inside. Nat was full of potential energy.