Could an organism survive only by using passive transport never active transport?

Answer 1

There's an almost infinite number of organisms out there and I wouldn't be overly surprised if some could, but generally speaking, cells need active transport to maintain control over the substances entering and exiting. At the expense of some enrgy, active transport allows cells to control to some extent the molecules that are allowed to cross the plasma membrane. A basic example would be to say that in most human cells, waste products are secreted by active transport so without such a process there would be a toxic buildup in the cell; and also that glucose requires active transport to enter a cell so without it, the cell would have no form of energy and die

Answer 2

No, organisms cannot survive solely by using passive transport mechanisms. Active transport is necessary for moving substances against their concentration gradient, which is crucial for maintaining essential processes such as ion exchange and nutrient uptake. Without active transport, an organism would not be able to regulate its internal environment effectively.