ATP sighed. This required a special operation. He grabbed a tiny, revolving door embedded in the membrane—a . “Alright, Gus,” ATP said. “This door is just for you. It only carries one type of passenger: glucose. But it won’t spin unless I push it.”
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. what are the types of active transport
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. ATP sighed
“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.” “Alright, Gus,” ATP said