Glucose moving into cells via glucose transporters is an example of facilitated transport, which:

1. Passive transport processes move solutes down, not against, a concentration gradient. 2. Facilitated transport uses membrane protein channels to speed diffusion of molecules like glucose. 3. Because it follows the gradient, unlike active transport, it does not require ATP. 4. 'Against the gradient' and 'requires ATP' both describe active transport, which this is not, so those are ruled out. 5. So the correct property is that facilitated transport does not require energy. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 26 "Fluid, Electrolyte, and Acid-Base Balance", p.1254 §Solute Movement between Compartments_